Articles | Volume 19, issue 4
Hydrol. Earth Syst. Sci., 19, 1767–1786, 2015
https://doi.org/10.5194/hess-19-1767-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Hydrol. Earth Syst. Sci., 19, 1767–1786, 2015
https://doi.org/10.5194/hess-19-1767-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article 17 Apr 2015
Research article | 17 Apr 2015
Characteristics and controls of variability in soil moisture and groundwater in a headwater catchment
H. K. McMillan and M. S. Srinivasan
Related authors
Naoki Mizukami, Martyn P. Clark, Kevin Sampson, Bart Nijssen, Yixin Mao, Hilary McMillan, Roland J. Viger, Steve L. Markstrom, Lauren E. Hay, Ross Woods, Jeffrey R. Arnold, and Levi D. Brekke
Geosci. Model Dev., 9, 2223–2238, https://doi.org/10.5194/gmd-9-2223-2016, https://doi.org/10.5194/gmd-9-2223-2016, 2016
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mizuRoute version 1 is a stand-alone runoff routing tool that post-processes runoff outputs from any distributed hydrologic models to produce streamflow estimates in large-scale river network. mizuRoute is flexible to river network representation and includes two different river routing schemes. This paper demonstrates mizuRoute's capability of multi-decadal streamflow estimations in the river networks over the entire contiguous Unites States, which contains over 54 000 river segments.
I. K. Westerberg and H. K. McMillan
Hydrol. Earth Syst. Sci., 19, 3951–3968, https://doi.org/10.5194/hess-19-3951-2015, https://doi.org/10.5194/hess-19-3951-2015, 2015
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This study investigated the effect of uncertainties in data and calculation methods on hydrological signatures. We present a widely applicable method to evaluate signature uncertainty and show results for two example catchments. The uncertainties were often large (i.e. typical intervals of ±10–40% relative uncertainty) and highly variable between signatures. It is therefore important to consider uncertainty when signatures are used for hydrological and ecohydrological analyses and modelling.
H. K. McMillan, E. Ö. Hreinsson, M. P. Clark, S. K. Singh, C. Zammit, and M. J. Uddstrom
Hydrol. Earth Syst. Sci., 17, 21–38, https://doi.org/10.5194/hess-17-21-2013, https://doi.org/10.5194/hess-17-21-2013, 2013
Naoki Mizukami, Martyn P. Clark, Kevin Sampson, Bart Nijssen, Yixin Mao, Hilary McMillan, Roland J. Viger, Steve L. Markstrom, Lauren E. Hay, Ross Woods, Jeffrey R. Arnold, and Levi D. Brekke
Geosci. Model Dev., 9, 2223–2238, https://doi.org/10.5194/gmd-9-2223-2016, https://doi.org/10.5194/gmd-9-2223-2016, 2016
Short summary
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mizuRoute version 1 is a stand-alone runoff routing tool that post-processes runoff outputs from any distributed hydrologic models to produce streamflow estimates in large-scale river network. mizuRoute is flexible to river network representation and includes two different river routing schemes. This paper demonstrates mizuRoute's capability of multi-decadal streamflow estimations in the river networks over the entire contiguous Unites States, which contains over 54 000 river segments.
I. K. Westerberg and H. K. McMillan
Hydrol. Earth Syst. Sci., 19, 3951–3968, https://doi.org/10.5194/hess-19-3951-2015, https://doi.org/10.5194/hess-19-3951-2015, 2015
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This study investigated the effect of uncertainties in data and calculation methods on hydrological signatures. We present a widely applicable method to evaluate signature uncertainty and show results for two example catchments. The uncertainties were often large (i.e. typical intervals of ±10–40% relative uncertainty) and highly variable between signatures. It is therefore important to consider uncertainty when signatures are used for hydrological and ecohydrological analyses and modelling.
H. K. McMillan, E. Ö. Hreinsson, M. P. Clark, S. K. Singh, C. Zammit, and M. J. Uddstrom
Hydrol. Earth Syst. Sci., 17, 21–38, https://doi.org/10.5194/hess-17-21-2013, https://doi.org/10.5194/hess-17-21-2013, 2013
Related subject area
Subject: Catchment hydrology | Techniques and Approaches: Instruments and observation techniques
Technical note: Evaluation of a low-cost evaporation protection method for portable water samplers
New flood frequency estimates for the largest river in Norway based on the combination of short and long time series
The pulse of a montane ecosystem: coupling between daily cycles in solar flux, snowmelt, transpiration, groundwater, and streamflow at Sagehen Creek and Independence Creek, Sierra Nevada, USA
Environmental DNA simultaneously informs hydrological and biodiversity characterization of an Alpine catchment
Technical note: A time-integrated sediment trap to sample diatoms for hydrological tracing
Landscape scale remediation reduces concentrations of suspended sediment and associated nutrients in alluvial gullies of a Great Barrier Reef catchment: evidence from a novel intensive monitoring approach
Do stream water solute concentrations reflect when connectivity occurs in a small, pre-Alpine headwater catchment?
Soil moisture sensor network design for hydrological applications
Catchment-scale drought: capturing the whole drought cycle using multiple indicators
Field-based estimation and modelling of distributed groundwater recharge in a Mediterranean karst catchment, Wadi Natuf, West Bank
Surface water as a cause of land degradation from dryland salinity
Technical note: A microcontroller-based automatic rain sampler for stable isotope studies
Controls on spatial and temporal variability in streamflow and hydrochemistry in a glacierized catchment
Open-source Arduino-compatible data loggers designed for field research
Water-use dynamics of an alien-invaded riparian forest within the summer rainfall zone of South Africa
Technical note: Mapping surface-saturation dynamics with thermal infrared imagery
Value of uncertain streamflow observations for hydrological modelling
Why has catchment evaporation increased in the past 40 years? A data-based study in Austria
Technical note: GUARD – an automated fluid sampler preventing sample alteration by contamination, evaporation and gas exchange, suitable for remote areas and harsh conditions
Hydrological processes and permafrost regulate magnitude, source and chemical characteristics of dissolved organic carbon export in a peatland catchment of northeastern China
Exploring the influence of citizen involvement on the assimilation of crowdsourced observations: a modelling study based on the 2013 flood event in the Bacchiglione catchment (Italy)
Comment on “Can assimilation of crowdsourced data in hydrological modelling improve flood prediction?” by Mazzoleni et al. (2017)
Multiconfiguration electromagnetic induction survey for paleochannel internal structure imaging: a case study in the alluvial plain of the River Seine, France
Tree-, stand- and site-specific controls on landscape-scale patterns of transpiration
The potamochemical symphony: new progress in the high-frequency acquisition of stream chemical data
Impact of snow deposition on major and trace element concentrations and elementary fluxes in surface waters of the Western Siberian Lowland across a 1700 km latitudinal gradient
Human amplified changes in precipitation–runoff patterns in large river basins of the Midwestern United States
Landscape and groundwater controls over boreal lake water chemistry and water balance heterogeneity in an esker complex of northeastern Ontario, Canada
Landscape-scale water balance monitoring with an iGrav superconducting gravimeter in a field enclosure
A site-level comparison of lysimeter and eddy covariance flux measurements of evapotranspiration
A lab in the field: high-frequency analysis of water quality and stable isotopes in stream water and precipitation
High-magnitude flooding across Britain since AD 1750
Water yield following forest–grass–forest transitions
Exploring water cycle dynamics by sampling multiple stable water isotope pools in a developed landscape in Germany
Variations of deep soil moisture under different vegetation types and influencing factors in a watershed of the Loess Plateau, China
Contradictory hydrological impacts of afforestation in the humid tropics evidenced by long-term field monitoring and simulation modelling
Use of cosmic-ray neutron sensors for soil moisture monitoring in forests
Closing the water balance with cosmic-ray soil moisture measurements and assessing their relation to evapotranspiration in two semiarid watersheds
The Hydrological Open Air Laboratory (HOAL) in Petzenkirchen: a hypothesis-driven observatory
Time series of tritium, stable isotopes and chloride reveal short-term variations in groundwater contribution to a stream
Understanding runoff processes in a semi-arid environment through isotope and hydrochemical hydrograph separations
Transit times from rainfall to baseflow in headwater catchments estimated using tritium: the Ovens River, Australia
Qualitative soil moisture assessment in semi-arid Africa – the role of experience and training on inter-rater reliability
Detecting groundwater discharge dynamics from point-to-catchment scale in a lowland stream: combining hydraulic and tracer methods
Groundwater surface mapping informs sources of catchment baseflow
Spatial distribution of oxygen-18 and deuterium in stream waters across the Japanese archipelago
Documentary evidence of historical floods and extreme rainfall events in Sweden 1400–1800
Sediment flow paths and associated organic carbon dynamics across a Mediterranean catchment
Using groundwater age and hydrochemistry to understand sources and dynamics of nutrient contamination through the catchment into Lake Rotorua, New Zealand
Where does streamwater come from in low-relief forested watersheds? A dual-isotope approach
Jana von Freyberg, Julia L. A. Knapp, Andrea Rücker, Bjørn Studer, and James W. Kirchner
Hydrol. Earth Syst. Sci., 24, 5821–5834, https://doi.org/10.5194/hess-24-5821-2020, https://doi.org/10.5194/hess-24-5821-2020, 2020
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Automated water samplers are often used to collect precipitation and streamwater samples for subsequent isotope analysis, but the isotopic signal of these samples may be altered due to evaporative fractionation occurring during the storage inside the autosamplers in the field. In this article we present and evaluate a cost-efficient modification to the Teledyne ISCO automated water sampler that prevents isotopic enrichment through evaporative fractionation of the water samples.
Kolbjørn Engeland, Anna Aano, Ida Steffensen, Eivind Støren, and Øyvind Paasche
Hydrol. Earth Syst. Sci., 24, 5595–5619, https://doi.org/10.5194/hess-24-5595-2020, https://doi.org/10.5194/hess-24-5595-2020, 2020
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We combine systematic, historical, and paleo information to obtain flood information from the last 10 300 years for the Glomma River in Norway. We identify periods with increased flood activity (4000–2000 years ago and the recent 1000 years) that correspond broadly to periods with low summer temperatures and glacier growth. The design floods in Glomma were more than 20 % higher during the 18th century than today. We suggest that trends in flood variability are linked to snow in late spring.
James W. Kirchner, Sarah E. Godsey, Madeline Solomon, Randall Osterhuber, Joseph R. McConnell, and Daniele Penna
Hydrol. Earth Syst. Sci., 24, 5095–5123, https://doi.org/10.5194/hess-24-5095-2020, https://doi.org/10.5194/hess-24-5095-2020, 2020
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Streams and groundwaters often show daily cycles in response to snowmelt and evapotranspiration. These typically have a roughly 6 h time lag, which is often interpreted as a travel-time lag. Here we show that it is instead primarily a phase lag that arises because aquifers integrate their inputs over time. We further show how these cycles shift seasonally, mirroring the springtime retreat of snow cover to higher elevations and the seasonal advance and retreat of photosynthetic activity.
Elvira Mächler, Anham Salyani, Jean-Claude Walser, Annegret Larsen, Bettina Schaefli, Florian Altermatt, and Natalie Ceperley
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2020-490, https://doi.org/10.5194/hess-2020-490, 2020
Revised manuscript accepted for HESS
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We collected water from an Alpine catchment in Switzerland and compared the genetic information of eukaryotic organisms conveyed by eDNA with the hydrologic information conveyed by naturally-occurring, hydrologic tracers. At the intersection of two disciplines, our study provides complementary knowledge gains and identifies the next steps to be addressed for using eDNA to achieve complementary insights into Alpine water sources.
Jasper Foets, Carlos E. Wetzel, Núria Martínez-Carreras, Adriaan J. Teuling, Jean-François Iffly, and Laurent Pfister
Hydrol. Earth Syst. Sci., 24, 4709–4725, https://doi.org/10.5194/hess-24-4709-2020, https://doi.org/10.5194/hess-24-4709-2020, 2020
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Diatoms (microscopic algae) are regarded as useful tracers in catchment hydrology. However, diatom analysis is labour-intensive; therefore, only a limited number of samples can be analysed. To reduce this number, we explored the potential for a time-integrated mass-flux sampler to provide a representative sample of the diatom assemblage for a whole storm run-off event. Our results indicate that the Phillips sampler did indeed sample representative communities during two of the three events.
Nicholas J. C. Doriean, William W. Bennett, John R. Spencer, Alexandra Garzon-Garcia, Joanne M. Burton, Peter R. Teasdale, David T. Welsh, and Andrew P. Brooks
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2020-268, https://doi.org/10.5194/hess-2020-268, 2020
Revised manuscript accepted for HESS
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Gully erosion is a major contributor to suspended sediment and associated nutrient pollution (e.g., gullies generate ~ 40 % of sediment pollution to the Great Barrier Reef). This study used a new method of monitoring to demonstrate how large-scale earthworks used to remediated large gullies, similar in size and shape to ravines, can drastically improve the water quality of connected waterways. Thus, protecting vulnerable ecosystems, such as coral reefs, from sediment pollution.
Leonie Kiewiet, Ilja van Meerveld, Manfred Stähli, and Jan Seibert
Hydrol. Earth Syst. Sci., 24, 3381–3398, https://doi.org/10.5194/hess-24-3381-2020, https://doi.org/10.5194/hess-24-3381-2020, 2020
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The sources of stream water are important, for instance, for predicting floods. The connectivity between streams and different (ground-)water sources can change during rain events, which affects the stream water composition. We investigated this for stream water sampled during four events and found that stream water came from different sources. The stream water composition changed gradually, and we showed that changes in solute concentrations could be partly linked to changes in connectivity.
Lu Zhuo, Qiang Dai, Binru Zhao, and Dawei Han
Hydrol. Earth Syst. Sci., 24, 2577–2591, https://doi.org/10.5194/hess-24-2577-2020, https://doi.org/10.5194/hess-24-2577-2020, 2020
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Soil moisture plays an important role in hydrological modelling. However, most existing in situ observation networks rarely provide sufficient coverage to capture soil moisture variations. Clearly, there is a need to develop a systematic approach, so that with the minimal number of sensors the soil moisture information could be captured accurately. In this study, a simple and low-data requirement method is proposed (WRF, PCA, CA), which can provide very efficient soil moisture estimations.
Abraham J. Gibson, Danielle C. Verdon-Kidd, Greg R. Hancock, and Garry Willgoose
Hydrol. Earth Syst. Sci., 24, 1985–2002, https://doi.org/10.5194/hess-24-1985-2020, https://doi.org/10.5194/hess-24-1985-2020, 2020
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To be better prepared for drought, we need to be able to characterize how they begin, translate to on-ground impacts and how they end. We created a 100-year drought record for an area on the east coast of Australia and compared this with soil moisture and vegetation data. Drought reduces vegetation and soil moisture, but recovery rates are different across different catchments. Our methods can be universally applied and show the need to develop area-specific data to inform drought management.
Clemens Messerschmid, Martin Sauter, and Jens Lange
Hydrol. Earth Syst. Sci., 24, 887–917, https://doi.org/10.5194/hess-24-887-2020, https://doi.org/10.5194/hess-24-887-2020, 2020
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Recharge assessment in the shared transboundary Western Aquifer Basin is highly relevant, scientifically as well as hydropolitically (in Israeli–Palestinian water negotiations). Our unique combination of field-measured soil characteristics and soil moisture time series with soil moisture saturation excess modelling provides a new basis for the spatial differentiation of formation-specific groundwater recharge (at any scale), applicable also in other previously ungauged basins around the world.
J. Nikolaus Callow, Matthew R. Hipsey, and Ryan I. J. Vogwill
Hydrol. Earth Syst. Sci., 24, 717–734, https://doi.org/10.5194/hess-24-717-2020, https://doi.org/10.5194/hess-24-717-2020, 2020
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Secondary dryland salinity is a global land degradation issue. Our understanding of causal processes is adapted from wet and hydrologically connected landscapes and concludes that low end-of-catchment runoff indicates land clearing alters water balance in favour of increased infiltration and rising groundwater that bring salts to the surface causing salinity. This study shows surface flows play an important role in causing valley floor recharge and dryland salinity in low-gradient landscapes.
Nils Michelsen, Gerrit Laube, Jan Friesen, Stephan M. Weise, Ali Bakhit Ali Bait Said, and Thomas Müller
Hydrol. Earth Syst. Sci., 23, 2637–2645, https://doi.org/10.5194/hess-23-2637-2019, https://doi.org/10.5194/hess-23-2637-2019, 2019
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Most commercial automatic rain samplers are costly and do not prevent evaporation from the collection bottles. Hence, we have developed a microcontroller-based collector enabling timer-actuated integral rain sampling. The simple, low-cost device is robust and effectively minimizes post-sampling evaporation. The excellent performance of the collector during an evaporation experiment in a lab oven suggests that even multi-week field deployments in warm climates are feasible.
Michael Engel, Daniele Penna, Giacomo Bertoldi, Gianluca Vignoli, Werner Tirler, and Francesco Comiti
Hydrol. Earth Syst. Sci., 23, 2041–2063, https://doi.org/10.5194/hess-23-2041-2019, https://doi.org/10.5194/hess-23-2041-2019, 2019
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Hydrometric and geochemical dynamics are controlled by interplay of meteorological conditions, topography and geological heterogeneity. Nivo-meteorological indicators (such as global solar radiation, temperature and decreasing snow depth) explain monthly conductivity and isotopic dynamics best. These insights are important for better understanding hydrochemical responses of glacierized catchments under a changing cryosphere.
Andrew D. Wickert, Chad T. Sandell, Bobby Schulz, and Gene-Hua Crystal Ng
Hydrol. Earth Syst. Sci., 23, 2065–2076, https://doi.org/10.5194/hess-23-2065-2019, https://doi.org/10.5194/hess-23-2065-2019, 2019
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Measuring Earth's changing environment is a critical part of natural science, but to date most of the equipment to do so is expensive, proprietary, and difficult to customize. We addressed this challenge by developing and deploying the ALog, a low-power, lightweight, Arduino-compatible data logger. We present our hardware schematics and layouts, as well as our customizable code library that operates the ALog and helps users to link it to off-the-shelf sensors.
Bruce C. Scott-Shaw and Colin S. Everson
Hydrol. Earth Syst. Sci., 23, 1553–1565, https://doi.org/10.5194/hess-23-1553-2019, https://doi.org/10.5194/hess-23-1553-2019, 2019
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The research undertaken for this study has allowed for an accurate direct comparison of indigenous and introduced tree water use. The measurements of trees growing in the understorey indicate significant water use in the subcanopy layer. The results showed that individual tree water use is largely inter-species specific. The introduced species remain active during the dry winter periods, resulting in their cumulative water use being significantly greater than that of the indigenous species.
Barbara Glaser, Marta Antonelli, Marco Chini, Laurent Pfister, and Julian Klaus
Hydrol. Earth Syst. Sci., 22, 5987–6003, https://doi.org/10.5194/hess-22-5987-2018, https://doi.org/10.5194/hess-22-5987-2018, 2018
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We demonstrate how thermal infrared images can be used for mapping the appearance and disappearance of water at the surface. The use of thermal infrared images allows for mapping this appearance and disappearance for various temporal and spatial resolutions, and the images can be understood intuitively. We explain the necessary steps in detail, from image acquisition to final processing, by relying on image examples and experience from an 18-month mapping campaign.
Simon Etter, Barbara Strobl, Jan Seibert, and H. J. Ilja van Meerveld
Hydrol. Earth Syst. Sci., 22, 5243–5257, https://doi.org/10.5194/hess-22-5243-2018, https://doi.org/10.5194/hess-22-5243-2018, 2018
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To evaluate the potential value of streamflow estimates for hydrological model calibration, we created synthetic streamflow datasets in various temporal resolutions based on the errors in streamflow estimates of 136 citizens. Our results show that streamflow estimates of untrained citizens are too inaccurate to be useful for model calibration. If, however, the errors can be reduced by training or filtering, the estimates become useful if also a sufficient number of estimates are available.
Doris Duethmann and Günter Blöschl
Hydrol. Earth Syst. Sci., 22, 5143–5158, https://doi.org/10.5194/hess-22-5143-2018, https://doi.org/10.5194/hess-22-5143-2018, 2018
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We analyze changes in catchment evaporation estimated from the water balances of 156 catchments in Austria over 1977–2014, as well as the possible causes of these changes. Our results show that catchment evaporation increased on average by 29 ± 14 mm yr−1 decade−1. We attribute this increase to changes in atmospheric demand (based on reference and pan evaporation), changes in vegetation (quantified by a satellite-based vegetation index), and changes in precipitation.
Arno Hartmann, Marc Luetscher, Ralf Wachter, Philipp Holz, Elisabeth Eiche, and Thomas Neumann
Hydrol. Earth Syst. Sci., 22, 4281–4293, https://doi.org/10.5194/hess-22-4281-2018, https://doi.org/10.5194/hess-22-4281-2018, 2018
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We have developed a new mobile automated water sampling device for environmental research and other applications where waters need to be tested for compliance with environmental/health regulations. It has two main advantages over similar devices: firstly, it injects water samples directly into airtight vials to prevent any change in sample properties through contamination, evaporation and gas exchange. Secondly, it can hold up to 160 sample vials, while other devices only hold up to 24 vials.
Yuedong Guo, Changchun Song, Wenwen Tan, Xianwei Wang, and Yongzheng Lu
Hydrol. Earth Syst. Sci., 22, 1081–1093, https://doi.org/10.5194/hess-22-1081-2018, https://doi.org/10.5194/hess-22-1081-2018, 2018
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The study examined dynamics of DOC export from a permafrost peatland catchment located in northeastern China. The findings indicated that the DOC export is a transport-limited process and the DOC load was significant for the net carbon balance in the studied catchment. The flowpath shift process is key to observed DOC concentration, resources and chemical characteristics in discharge. Permafrost degradation would likely elevate the proportion of microbe-originated DOC in baseflow.
Maurizio Mazzoleni, Vivian Juliette Cortes Arevalo, Uta Wehn, Leonardo Alfonso, Daniele Norbiato, Martina Monego, Michele Ferri, and Dimitri P. Solomatine
Hydrol. Earth Syst. Sci., 22, 391–416, https://doi.org/10.5194/hess-22-391-2018, https://doi.org/10.5194/hess-22-391-2018, 2018
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We investigate the usefulness of assimilating crowdsourced observations from a heterogeneous network of sensors for different scenarios of citizen involvement levels during the flood event occurred in the Bacchiglione catchment in May 2013. We achieve high model performance by integrating crowdsourced data, in particular from citizens motivated by their feeling of belonging to a community. Satisfactory model performance can still be obtained even for decreasing citizen involvement over time.
Daniele P. Viero
Hydrol. Earth Syst. Sci., 22, 171–177, https://doi.org/10.5194/hess-22-171-2018, https://doi.org/10.5194/hess-22-171-2018, 2018
Fayçal Rejiba, Cyril Schamper, Antoine Chevalier, Benoit Deleplancque, Gaghik Hovhannissian, Julien Thiesson, and Pierre Weill
Hydrol. Earth Syst. Sci., 22, 159–170, https://doi.org/10.5194/hess-22-159-2018, https://doi.org/10.5194/hess-22-159-2018, 2018
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The internal variability of paleomeanders strongly influence water fluxes in alluvial plains. This study presents the results of a hydrogeophysical investigation that provide a very detailed characterization of the geometry of a wide paleomeander. The presented case study, situated in the Seine River basin (France), represents a common sedimentary and geomorphological structure in alluvial plains worldwide.
Sibylle Kathrin Hassler, Markus Weiler, and Theresa Blume
Hydrol. Earth Syst. Sci., 22, 13–30, https://doi.org/10.5194/hess-22-13-2018, https://doi.org/10.5194/hess-22-13-2018, 2018
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We use sap velocity measurements from 61 trees on 132 days to gain knowledge about the controls of landscape-scale transpiration, distinguishing tree-, stand- and site-specific controls on sap velocity and sap flow patterns and examining their dynamics during the vegetation period. Our results show that these patterns are not exclusively determined by tree characteristics. Thus, including site characteristics such as geology and aspect could be beneficial for modelling or management purposes.
Paul Floury, Jérôme Gaillardet, Eric Gayer, Julien Bouchez, Gaëlle Tallec, Patrick Ansart, Frédéric Koch, Caroline Gorge, Arnaud Blanchouin, and Jean-Louis Roubaty
Hydrol. Earth Syst. Sci., 21, 6153–6165, https://doi.org/10.5194/hess-21-6153-2017, https://doi.org/10.5194/hess-21-6153-2017, 2017
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We present a new prototype
lab in the fieldnamed River Lab (RL) designed for water quality monitoring to perform a complete analysis at sub-hourly frequency of major dissolved species in river water. The article is an analytical paper to present the proof of concept, its performances and improvements. Our tests reveal a significant improvement of reproducibility compared to conventional analysis in the laboratory. First results are promising for understanding the critical zone.
Vladimir P. Shevchenko, Oleg S. Pokrovsky, Sergey N. Vorobyev, Ivan V. Krickov, Rinat M. Manasypov, Nadezhda V. Politova, Sergey G. Kopysov, Olga M. Dara, Yves Auda, Liudmila S. Shirokova, Larisa G. Kolesnichenko, Valery A. Zemtsov, and Sergey N. Kirpotin
Hydrol. Earth Syst. Sci., 21, 5725–5746, https://doi.org/10.5194/hess-21-5725-2017, https://doi.org/10.5194/hess-21-5725-2017, 2017
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We used a coupled hydrological–hydrochemical approach to assess the impact of snow on river and lake water chemistry across a permafrost gradient in very poorly studied Western Siberia Lowland (WSL), encompassing > 1.5 million km2. The riverine springtime fluxes of major and trace element in WSL rivers might be strongly overestimated due to previously unknown input from the snow deposition.
Sara A. Kelly, Zeinab Takbiri, Patrick Belmont, and Efi Foufoula-Georgiou
Hydrol. Earth Syst. Sci., 21, 5065–5088, https://doi.org/10.5194/hess-21-5065-2017, https://doi.org/10.5194/hess-21-5065-2017, 2017
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Humans have profoundly altered land cover and soil drainage for agricultural purposes in the Midwestern USA. Here we investigate whether climate alone can explain recent increases in observed streamflows throughout the region. Using multiple analyses, including statistical tests and water budgets, we conclude that historical drainage installation has likely amplified the streamflow response to regional precipitation increases. We stress that better documentation of artificial drainage is needed.
Maxime P. Boreux, Scott F. Lamoureux, and Brian F. Cumming
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2017-460, https://doi.org/10.5194/hess-2017-460, 2017
Revised manuscript accepted for HESS
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The investigation of groundwater-lake water interactions in a highly permeable boreal terrain using several indicators showed that lowland lakes are imbedded into the groundwater system and are thus relatively resilient to short-term hydroclimatic change while upland lakes rely more on precipitation as their main water input, making them more sensitive to evaporative drawdown. This suggest that landscape position controls the vulnerability of lake water levels to hydroclimatic change.
Andreas Güntner, Marvin Reich, Michal Mikolaj, Benjamin Creutzfeldt, Stephan Schroeder, and Hartmut Wziontek
Hydrol. Earth Syst. Sci., 21, 3167–3182, https://doi.org/10.5194/hess-21-3167-2017, https://doi.org/10.5194/hess-21-3167-2017, 2017
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Monitoring water storage changes beyond the point scale is a challenge. Here, we show that an integrative and non-invasive way is by observing variations of gravity that are induced by water mass changes. A high-precision superconducting gravimeter is successfully operated in the field and allows for direct and continuous monitoring of the water balance and of its components, such as actual evapotranspiration.
Martin Hirschi, Dominik Michel, Irene Lehner, and Sonia I. Seneviratne
Hydrol. Earth Syst. Sci., 21, 1809–1825, https://doi.org/10.5194/hess-21-1809-2017, https://doi.org/10.5194/hess-21-1809-2017, 2017
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We compare lysimeter and eddy covariance (EC) flux measurements of evapotranspiration at a research catchment in Switzerland. The measurements are compared on various timescales, and with respect to a 40-year long-term lysimeter time series. Overall, the lysimeter and EC measurements agree well, especially on the annual timescale. Furthermore, we identify that lack of reliable EC data during/after rainfall events significantly contributes to an underestimation of EC evapotranspiration.
Jana von Freyberg, Bjørn Studer, and James W. Kirchner
Hydrol. Earth Syst. Sci., 21, 1721–1739, https://doi.org/10.5194/hess-21-1721-2017, https://doi.org/10.5194/hess-21-1721-2017, 2017
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We present a newly developed instrument package that enables the online analysis of stable water isotopes and major ion chemistry at 30 min intervals in the field. The resulting data streams provide an unprecedented view of hydrochemical dynamics on the catchment scale. Based on a detailed analysis of the variable behavior of isotopic and chemical tracers in stream water and precipitation over a 4-week period, we developed a conceptual hypothesis for runoff generation in the studied catchment.
Neil Macdonald and Heather Sangster
Hydrol. Earth Syst. Sci., 21, 1631–1650, https://doi.org/10.5194/hess-21-1631-2017, https://doi.org/10.5194/hess-21-1631-2017, 2017
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We use historical records to extend current understanding of flood risk, examining past spatial and temporal variability and ask
are the perceived high-magnitude flood events witnessed in recent years really unprecedented?We identify that there are statistically significant relationships between the British flood index and climatic drivers, whereby the largest floods often transcend single catchments affecting regions and that the current flood-rich period is not unprecedented.
Katherine J. Elliott, Peter V. Caldwell, Steven T. Brantley, Chelcy F. Miniat, James M. Vose, and Wayne T. Swank
Hydrol. Earth Syst. Sci., 21, 981–997, https://doi.org/10.5194/hess-21-981-2017, https://doi.org/10.5194/hess-21-981-2017, 2017
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Our long-term results are relevant to land areas that are in pasture and those that have reverted back to forests. We found that within a deciduous forest, species identity matters in terms of how much precipitation leaves the watershed as evapotranspiration versus water yield. We demonstrate that a shift in tree species composition from species with ring-porous xylem to species with diffuse-porous xylem can increase water use, and in turn, produce a long-term reduction in water yield.
Natalie Orlowski, Philipp Kraft, Jakob Pferdmenges, and Lutz Breuer
Hydrol. Earth Syst. Sci., 20, 3873–3894, https://doi.org/10.5194/hess-20-3873-2016, https://doi.org/10.5194/hess-20-3873-2016, 2016
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The 2-year measurements of δ2H and δ18O in rainfall, stream, soil, and groundwater revealed that surface and groundwater are isotopically disconnected from the annual precipitation cycle but showed bidirectional interactions in the Schwingbach catchment. We established a hydrological model to estimate spatially distributed groundwater ages and flow directions. Our model revealed complex age dynamics and showed that runoff must have been stored in the catchment for much longer than event water.
Xuening Fang, Wenwu Zhao, Lixin Wang, Qiang Feng, Jingyi Ding, Yuanxin Liu, and Xiao Zhang
Hydrol. Earth Syst. Sci., 20, 3309–3323, https://doi.org/10.5194/hess-20-3309-2016, https://doi.org/10.5194/hess-20-3309-2016, 2016
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In this study, we focused on analyzing the variation and factors influencing deep soil moisture content based on a soil moisture survey of the Ansai watershed. Our results revealed the variation characteristics of deep soil moisture and its controlling mechanism at a moderate scale. The results of this study are of practical significance for vegetation restoration strategies and the sustainability of restored ecosystems.
Guillaume Lacombe, Olivier Ribolzi, Anneke de Rouw, Alain Pierret, Keoudone Latsachak, Norbert Silvera, Rinh Pham Dinh, Didier Orange, Jean-Louis Janeau, Bounsamai Soulileuth, Henri Robain, Adrien Taccoen, Phouthamaly Sengphaathith, Emmanuel Mouche, Oloth Sengtaheuanghoung, Toan Tran Duc, and Christian Valentin
Hydrol. Earth Syst. Sci., 20, 2691–2704, https://doi.org/10.5194/hess-20-2691-2016, https://doi.org/10.5194/hess-20-2691-2016, 2016
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Laos and Vietnam have switched from net forest loss to net forest expansion between 1990 and 2015. Based on long-term field measurements of land use, river flows, and weather data, we demonstrate that forest expansion can have extreme, yet opposite, impacts on water resources, depending on how the newly established tree-based cover is managed. The conversion of annual crops to teak plantations in Laos or to naturally regrowing forests in Vietnam led to increased and decreased flows, respectively.
Ingo Heidbüchel, Andreas Güntner, and Theresa Blume
Hydrol. Earth Syst. Sci., 20, 1269–1288, https://doi.org/10.5194/hess-20-1269-2016, https://doi.org/10.5194/hess-20-1269-2016, 2016
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Cosmic-ray neutron sensors bridge the gap between point-scale measurements of soil moisture and remote sensing applications. We tested four distinct methods to calibrate the sensor in a temperate forest environment using different soil moisture weighting approaches. While the variable leaf biomass of the deciduous trees had no significant influence on the calibration, it proved necessary to modify the standard calibration method to achieve the best sensor performance.
A. P. Schreiner-McGraw, E. R. Vivoni, G. Mascaro, and T. E. Franz
Hydrol. Earth Syst. Sci., 20, 329–345, https://doi.org/10.5194/hess-20-329-2016, https://doi.org/10.5194/hess-20-329-2016, 2016
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Soil moisture estimates from a novel method were evaluated in two semiarid watersheds. We found good agreements between the technique and estimates derived from watershed instruments designed to close the water balance. We then investigated local hydrologic processes and link between evapotranspiration and soil moisture obtained from the novel measurements.
G. Blöschl, A. P. Blaschke, M. Broer, C. Bucher, G. Carr, X. Chen, A. Eder, M. Exner-Kittridge, A. Farnleitner, A. Flores-Orozco, P. Haas, P. Hogan, A. Kazemi Amiri, M. Oismüller, J. Parajka, R. Silasari, P. Stadler, P. Strauss, M. Vreugdenhil, W. Wagner, and M. Zessner
Hydrol. Earth Syst. Sci., 20, 227–255, https://doi.org/10.5194/hess-20-227-2016, https://doi.org/10.5194/hess-20-227-2016, 2016
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This paper illustrates the experimental and monitoring set-up of the 66 ha Hydrological Open Air Laboratory (HOAL) in Petzenkirchen, Lower Austria, which allows meaningful hypothesis testing. The HOAL catchment features a range of different runoff generation processes (surface runoff, springs, tile drains, wetlands), and is convenient from a logistic point of view as all instruments can be connected to the power grid and a high-speed glassfibre local area network.
C. Duvert, M. K. Stewart, D. I. Cendón, and M. Raiber
Hydrol. Earth Syst. Sci., 20, 257–277, https://doi.org/10.5194/hess-20-257-2016, https://doi.org/10.5194/hess-20-257-2016, 2016
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The transit time of water is a key indicator of hydrological processes at the catchment scale. Our results suggest that the use of tritium time series in streamwater can be highly valuable for assessing the temporal variations in the transit time of older groundwater contributions to streamflow. We also show that, shortly after high flow events, the transit time of the old water fraction increases and tends to approach the groundwater residence time.
V. V. Camacho Suarez, A. M. L. Saraiva Okello, J. W. Wenninger, and S. Uhlenbrook
Hydrol. Earth Syst. Sci., 19, 4183–4199, https://doi.org/10.5194/hess-19-4183-2015, https://doi.org/10.5194/hess-19-4183-2015, 2015
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Isotope and hydrochemical tracers are tested providing new insights to isotope hydrograph in semi-arid areas in southern Africa. This study provides a spatial hydrochemical characterization of surface and groundwater sources, end member mixing analysis, and two- and three-component hydrograph separations. Results showed that the Kaap catchment is mainly dominated by groundwater sources, and direct runoff is positively correlated with the Antecedent Precipitation Index during the wet season.
I. Cartwright and U. Morgenstern
Hydrol. Earth Syst. Sci., 19, 3771–3785, https://doi.org/10.5194/hess-19-3771-2015, https://doi.org/10.5194/hess-19-3771-2015, 2015
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This study documents the age of water that contributes to rivers in upper catchments using the radioactive tracer tritium. River water in the upper Ovens Valley (Australia) is several years to decades old and water from different parts of the catchment (e.g., soil, regolith, and groundwater) is mobilised at different flow conditions. The results indicate that these rivers are buffered against short term climate variability but are susceptible to longer-term climate and land use changes
M. Rinderer, H. C. Komakech, D. Müller, G. L. B. Wiesenberg, and J. Seibert
Hydrol. Earth Syst. Sci., 19, 3505–3516, https://doi.org/10.5194/hess-19-3505-2015, https://doi.org/10.5194/hess-19-3505-2015, 2015
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A field method for assessing soil moisture in semi-arid conditions is proposed and tested in terms of inter-rater reliability with 40 Tanzanian farmers, students and experts. The seven wetness classes are based on qualitative indicators that one can see, feel or hear. It could be shown that the qualitative wetness classes reflect differences in volumetric water content and neither experience nor a certain level of education was a prerequisite to gain high agreement among raters.
J. R. Poulsen, E. Sebok, C. Duque, D. Tetzlaff, and P. K. Engesgaard
Hydrol. Earth Syst. Sci., 19, 1871–1886, https://doi.org/10.5194/hess-19-1871-2015, https://doi.org/10.5194/hess-19-1871-2015, 2015
J. F. Costelloe, T. J. Peterson, K. Halbert, A. W. Western, and J. J. McDonnell
Hydrol. Earth Syst. Sci., 19, 1599–1613, https://doi.org/10.5194/hess-19-1599-2015, https://doi.org/10.5194/hess-19-1599-2015, 2015
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Groundwater surface mapping is used as an independent data set to better estimate groundwater discharge to streamflow. The groundwater surfaces indicated when other techniques likely overestimated the groundwater discharge component of baseflow. Groundwater surfaces also identified areas where regional groundwater could not be contributing to tributary streamflow. This method adds significant value to water resource management where sufficient groundwater monitoring data are available.
M. Katsuyama, T. Yoshioka, and E. Konohira
Hydrol. Earth Syst. Sci., 19, 1577–1588, https://doi.org/10.5194/hess-19-1577-2015, https://doi.org/10.5194/hess-19-1577-2015, 2015
D. Retsö
Hydrol. Earth Syst. Sci., 19, 1307–1323, https://doi.org/10.5194/hess-19-1307-2015, https://doi.org/10.5194/hess-19-1307-2015, 2015
C. Boix-Fayos, E. Nadeu, J. M. Quiñonero, M. Martínez-Mena, M. Almagro, and J. de Vente
Hydrol. Earth Syst. Sci., 19, 1209–1223, https://doi.org/10.5194/hess-19-1209-2015, https://doi.org/10.5194/hess-19-1209-2015, 2015
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This study follows organic carbon from soils along sediment flow paths at catchment scale to analyse the evolution of OC pools. Selectivity of particles during detachment and transport, and protection of OC during transport and deposition are key for the concentration and quality of OC at depositional settings and for the terrestrial carbon sink. OC can also be increased by ecological processes and by replacement in eroded areas, converting catchments into relevant sinks for C budget.
U. Morgenstern, C. J. Daughney, G. Leonard, D. Gordon, F. M. Donath, and R. Reeves
Hydrol. Earth Syst. Sci., 19, 803–822, https://doi.org/10.5194/hess-19-803-2015, https://doi.org/10.5194/hess-19-803-2015, 2015
J. Klaus, J. J. McDonnell, C. R. Jackson, E. Du, and N. A. Griffiths
Hydrol. Earth Syst. Sci., 19, 125–135, https://doi.org/10.5194/hess-19-125-2015, https://doi.org/10.5194/hess-19-125-2015, 2015
Cited articles
Acclima: SDI-12 Sensor Data Sheet: http://acclima.com/wd/acclimadocs/agriculture/SDI-12_TDT_Sensor_Data_Sheet.pdf, last access: 1 November 2014.
Ali, G., Oswald, C. J., Spence, C., Cammeraat, E. L. H., McGuire, K. J., Meixner, T., and Reaney, S. M.: Towards a unified threshold-based hydrological theory: necessary components and recurring challenges, Hydrol. Process., 27, 313–318, https://doi.org/10.1002/hyp.9560, 2013.
Anderson, M. G. and Burt, T. P.: The role of topography in controlling throughflow generation, Earth Surf. Proc. Land., 3, 331–344, 1978.
Beldring, S., Gottschalk, L., Seibert, J., and Tallaksen, L. M.: Distribution of soil moisture and groundwater levels at patch and catchment scales, Agricultural and Forest Meteorology, 98-9, 305-324, 10.1016/s0168-1923(99)00103-3, 1999.
Bachmair, S., Weiler, M., and Troch, P. A.: Intercomparing hillslope hydrological dynamics: Spatio-temporal variability and vegetation cover effects, Water Resour. Res., 48, W05537, https://doi.org/10.1029/2011wr011196, 2012.
Beven, K. and Germann, P.: Macropores and water flow in soils revisited, Water Resour. Res., 49, 3071–3092, https://doi.org/10.1002/wrcr.20156, 2013.
Beven, K. and Kirkby, M. J.: A physically based variable contributing area model of basin hydrology, Hydrol. Sci. Bull., 24, 43–69, 1979.
Bidwell, V. J., Stenger, R., and Barkle, G. F.: Dynamic analysis of groundwater discharge and partial-area contribution to Pukemanga Stream, New Zealand, Hydrol. Earth Syst. Sci., 12, 975–987, https://doi.org/10.5194/hess-12-975-2008, 2008.
Binley, A., Ullah, S., Heathwaite, A. L., Heppell, C., Byrne, P., Lansdown, K., Trimmer, M., and Zhang, H.: Revealing the spatial variability of water fluxes at the groundwater-surface water interface, Water Resour. Res., 49, 3978–3992, https://doi.org/10.1002/wrcr.20214, 2013.
Blöschl, G. and Sivapalan, M.: Scale Issues in Hydrological Modeling - A Review, Hydrol. Process., 9, 251–290, 1995.
Bretherton, M. R., Scotter, D. R., Horne, D. J., and Hedley, M. J.: Towards an improved understanding of the soil water balance of sloping land under pasture, New Zeal. J. Agr. Res., 53, 175–185, 2010.
Brocca, L., Morbidelli, R., Melone, F., and Moramarco, T.: Soil moisture spatial variability in experimental areas of central Italy, J. Hydrol., 333, 356–373, https://doi.org/10.1016/j.jhydrol.2006.09.004, 2007.
Bronstert, A. and Bárdossy, A.: The role of spatial variability of soil moisture for modelling surface runoff generation at the small catchment scale, Hydrol. Earth Syst. Sci., 3, 505–516, https://doi.org/10.5194/hess-3-505-1999, 1999.
Chen, X. and Hu, Q.: Groundwater influences on soil moisture and surface evaporation, J. Hydrol., 297, 285–300, https://doi.org/10.1016/j.jhydrol.2004.04.019, 2004.
Crave, A. and Gascuel-Odoux, C.: The influence of topography on time and space distribution of soil surface water content, Hydrol. Process., 11, 203–210, 1997.
Detty, J. M. and McGuire, K. J.: Topographic controls on shallow groundwater dynamics: implications of hydrologic connectivity between hillslopes and riparian zones in a till mantled catchment, Hydrol. Process., 24, 2222–2236, https://doi.org/10.1002/hyp.7656, 2010a.
Detty, J. M. and McGuire, K. J.: Threshold changes in storm runoff generation at a till-mantled headwater catchment, Water Resour. Res., 46, W07525, https://doi.org/10.1029/2009wr008102, 2010b.
Eger, A. and Hewitt, A.: Soils and their relationship to aspect and vegetation history in the eastern Southern Alps, Canterbury High Country, South Island, New Zealand, Catena, 75, 297–307, https://doi.org/10.1016/j.catena.2008.07.008, 2008.
Entin, J. K., Robock, A., Vinnikov, K. Y., Hollinger, S. E., Liu, S. X., and Namkhai, A.: Temporal and spatial scales of observed soil moisture variations in the extratropics, J. Geophys. Res.-Atmos., 105, 11865–11877, https://doi.org/10.1029/2000jd900051, 2000.
Famiglietti, J. S., Ryu, D., Berg, A. A., Rodell, M., and Jackson, T. J.: Field observations of soil moisture variability across scales, Water Resour. Res., 44, W01423, https://doi.org/10.1029/2006wr005804, 2008.
Fenicia, F., Wrede, S., Kavetski, D., Pfister, L., Hoffmann, L., Savenije, H. H. G., and McDonnell, J. J.: Assessing the impact of mixing assumptions on the estimation of streamwater mean residence time, Hydrol. Process., 24, 1730–1741, 2010.
Freer, J., McDonnell, J. J., Beven, K. J., Peters, N. E., Burns, D. A., Hooper, R. P., Aulenbach, B., and Kendall, C.: The role of bedrock topography on subsurface storm flow, Water Resour. Res., 38, 1269, https://doi.org/10.1029/2001wr000872, 2002.
Freer, J., McMillan, H., McDonnell, J. J., and Beven, K. J.: Constraining dynamic TOPMODEL responses for imprecise water table information using fuzzy rule based performance measures, J. Hydrol., 291, 254–277, 2004.
Fujimoto, M., Ohte, N., and Tani, M.: Effects of hillslope topography on hydrological responses in a weathered granite mountain, Japan: comparison of the runoff response between the valley-head and the side slope, Hydrol. Process., 22, 2581–2594, https://doi.org/10.1002/hyp.6857, 2008.
Gabrielli, C. P., McDonnell, J. J., and Jarvis, W. T.: The role of bedrock groundwater in rainfall-runoff response at hillslope and catchment scales, J. Hydrol., 450, 117–133, https://doi.org/10.1016/j.jhydrol.2012.05.023, 2012.
Gharari, S., Hrachowitz, M., Fenicia, F., and Savenije, H. H. G.: Hydrological landscape classification: investigating the performance of HAND based landscape classifications in a central European meso-scale catchment, Hydrol. Earth Syst. Sci., 15, 3275–3291, https://doi.org/10.5194/hess-15-3275-2011, 2011.
Gleeson, T., Novakowski, K., and Kyser, T. K.: Extremely rapid and localized recharge to a fractured rock aquifer, J. Hydrol., 376, 496–509, https://doi.org/10.1016/j.jhydrol.2009.07.056, 2009.
Graham, C. B. and McDonnell, J. J.: Hillslope threshold response to rainfall: (2) Development and use of a macroscale model, J. Hydrol., 393, 77–93, https://doi.org/10.1016/j.jhydrol.2010.03.008, 2010.
Graham, C. B., Woods, R. A., and McDonnell, J. J.: Hillslope threshold response to rainfall: (1) A field based forensic approach, J. Hydrol., 393, 65–76, https://doi.org/10.1016/j.jhydrol.2009.12.015, 2010.
Grayson, R. B. and Western, A. W.: Towards areal estimation of soil water content from point measurements: time and space stability of mean response, J. Hydrol., 207, 68–82, https://doi.org/10.1016/s0022-1694(98)00096-1, 1998.
Grayson, R. B. and Bloschl, G.: Spatial Processes, Organisation and Patterns, in: Spatial Patterns in Catchment Hydrology: Observations and Modelling, edited by: Grayson, R. B. and Bloschl, G., Cambridge University Press, Cambridge, 1–16, 2000.
Grayson, R. B., Bloschl, G., Western, A. W., and McMahon, T. A.: Advances in the use of observed spatial patterns of catchment hydrological response, Adv. Water Resour., 25, 1313–1334, https://doi.org/10.1016/s0309-1708(02)00060-x, 2002.
Gupta, H. V., Perrin, C., Blöschl, G., Montanari, A., Kumar, R., Clark, M., and Andréassian, V.: Large-sample hydrology: a need to balance depth with breadth, Hydrol. Earth Syst. Sci., 18, 463–477, https://doi.org/10.5194/hess-18-463-2014, 2014.
Haria, A. H. and Shand, P.: Evidence for deep sub-surface flow routing in forested upland Wales: implications for contaminant transport and stream flow generation, Hydrol. Earth Syst. Sci., 8, 334–344, https://doi.org/10.5194/hess-8-334-2004, 2004.
Harman, C. and Sivapalan, M.: A similarity framework to assess controls on shallow subsurface flow dynamics in hillslopes, Water Resour. Res., 45, W01417, https://doi.org/10.1029/2008wr007067, 2009.
Haught, D. R. W. and Meerveld, H. J.: Spatial variation in transient water table responses: differences between an upper and lower hillslope zone, Hydrol. Process., 25, 3866–3877, https://doi.org/10.1002/hyp.8354, 2011.
Heidbuechel, I., Troch, P. A., and Lyon, S. W.: Separating physical and meteorological controls of variable transit times in zero-order catchments, Water Resour. Res., 49, 7644–7657, https://doi.org/10.1002/2012wr013149, 2013.
Henderson, F. M. and Wooding, R. A.: Overland flow and groundwater flow from a steady rainfall of finite duration, J. Geophys. Res., 69, 1531–1540, 1964.
Jackson, R. J.: The effect of slope, aspect and albedo on potential evapotranspiration from hillslopes and catchments, J. Hydrol., 6, 60–69, 1967.
Jencso, K. G., McGlynn, B. L., Gooseff, M. N., Bencala, K. E., and Wondzell, S. M.: Hillslope hydrologic connectivity controls riparian groundwater turnover: Implications of catchment structure for riparian buffering and stream water sources, Water Resour. Res., 46, W10524, https://doi.org/10.1029/2009wr008818, 2010.
Kaplan, D. and Munoz-Carpena, R.: Complementary effects of surface water and groundwater on soil moisture dynamics in a degraded coastal floodplain forest, J. Hydrol., 398, 221–234, https://doi.org/10.1016/j.jhydrol.2010.12.019, 2011.
Kavetski, D., Kuczera, G., and Franks, S. W.: Calibration of conceptual hydrological models revisited: 1. Overcoming numerical artefacts, J. Hydrol., 320, 173–186, https://doi.org/10.1016/j.jhydrol.2005.07.012, 2006.
Kim, C. P., Salvucci, G. D., and Entekhabi, D.: Groundwater-surface water interaction and the climatic spatial patterns of hillslope hydrological response, Hydrol. Earth Syst. Sci., 3, 375–384, https://doi.org/10.5194/hess-3-375-1999, 1999.
Kim, S., Lee, H., Woo, N. C., and Kim, J.: Soil moisture monitoring on a steep hillside, Hydrol. Process., 21, 2910–2922, https://doi.org/10.1002/hyp.6508, 2007.
Kirchner, J. W.: Getting the right answers for the right reasons: Linking measurements, analyses, and models to advance the science of hydrology, Water Resour. Res., 42, W03s04, https://doi.org/10.1029/2005wr004362, 2006.
Kosugi, K. I., Katsura, S. Y., Mizuyama, T., Okunaka, S., and Mizutani, T.: Anomalous behavior of soil mantle groundwater demonstrates the major effects of bedrock groundwater on surface hydrological processes, Water Resour. Res., 44, W01407, https://doi.org/10.1029/2006wr005859, 2008.
Kosugi, K. I., Fujimoto, M., Katsura, S. Y., Kato, H., Sando, Y., and Mizuyama, T.: Localized bedrock aquifer distribution explains discharge from a headwater catchment, Water Resour. Res., 47, W07530, https://doi.org/10.1029/2010wr009884, 2011.
Lambert, M. G. and Roberts, E.: Aspect differences in an unimproved hill country pasture, I. Climatic differences, New Zeal. J. Agr. Res., 19, 459–467, 1976.
Lana-Renault, N., Regues, D., Serrano, P., and Latron, J.: Spatial and temporal variability of groundwater dynamics in a sub-Mediterranean mountain catchment, Hydrol. Process., 28, 3288–3299, https://doi.org/10.1002/hyp.9892, 2014.
Lehmann, P., Hinz, C., McGrath, G., Tromp-van Meerveld, H. J., and McDonnell, J. J.: Rainfall threshold for hillslope outflow: an emergent property of flow pathway connectivity, Hydrol. Earth Syst. Sci., 11, 1047–1063, https://doi.org/10.5194/hess-11-1047-2007, 2007.
Lilburne, L., Hewitt, A., Webb, T. H., and Carrick, S.: S-map: a new soil database for New Zealand, Proceedings of SuperSoil 2004: 3rd Australian New Zealand Soils Conference, Sydney, Australia, 1–8, 2004.
Lowry, T. S., Bright, J. C., Close, M. E., Robb, C. A., White, P. A., and Cameron, S. G.: Management gaps analysis: A case study of groundwater resource management in New Zealand, Int. J. Water Resour. Develop., 19, 579–592, https://doi.org/10.1080/0790062032000161382, 2003.
McDonnell, J. J.: A rationale for old water discharge through macropores in a steep, humid catchment, Water Resour. Res., 26, 2821–2832, 1990.
McGlynn, B. L., McDonnel, J. J., and Brammer, D. D.: A review of the evolving perceptual model of hillslope flowpaths at the Maimai catchments, New Zealand, J. Hydrol., 257, 1–26, 2002.
McMillan, H.: Effect of spatial variability and seasonality in soil moisture on drainage thresholds and fluxes in a conceptual hydrological model, Hydrol. Process., 26, 2838–2844, 2012.
McMillan, H., Gueguen, M., Grimon, E., Woods, R., Clark, M., and Rupp, D. E.: Spatial variability of hydrological processes and model structure diagnostics in a 50 km2 catchment, Hydrol. Process., 28, 4896–4913, https://doi.org/10.1002/hyp.9988, 2014.
Michot, D., Benderitter, Y., Dorigny, A., Nicoullaud, B., King, D., and Tabbagh, A.: Spatial and temporal monitoring of soil water content with an irrigated corn crop cover using surface electrical resistivity tomography, Water Resour. Res., 39, W01138, https://doi.org/10.1029/2002wr001581, 2003.
Moore, R. J.: The PDM rainfall-runoff model, Hydrol. Earth Syst. Sci., 11, 483–499, https://doi.org/10.5194/hess-11-483-2007, 2007.
Njoku, E. G., Wilson, W. J., Yueh, S. H., Dinardo, S. J., Li, F. K., Jackson, T. J., Lakshmi, V., and Bolten, J.: Observations of soil moisture using a passive and active low-frequency microwave airborne sensor during SGP99, IEEE T. Geosci. Remote, 40, 2659–2673, https://doi.org/10.1109/tgrs.2002.807008, 2002.
Nyberg, L.: Spatial variability of soil water content in the covered catchment at Gardsjon, Sweden, Hydrol. Process., 10, 89–103, 1996.
Onda, Y., Komatsu, Y., Tsujimura, M., and Fujihara, J.: The role of subsurface runoff through bedrock on storm flow generation, Hydrol. Process., 15, 1693–1706, https://doi.org/10.1002/hyp.234, 2001.
Parlange, M. B., Steenhuis, T. S., Timlin, D. J., Stagnitti, F., and Bryant, R. B.: Subsurface flow above a fragipan horizon, Soil Sci., 148, 77–86, 1989.
Penna, D., Borga, M., Norbiato, D., and Fontana, G. D.: Hillslope scale soil moisture variability in a steep alpine terrain, J. Hydrol., 364, 311–327, https://doi.org/10.1016/j.jhydrol.2008.11.009, 2009.
Qiu, Y., Fu, B. J., Wang, J., and Chen, L. D.: Soil moisture variation in relation to topography and land use in a hillslope catchment of the Loess Plateau, China, J. Hydrol., 240, 243–263, https://doi.org/10.1016/s0022-1694(00)00362-0, 2001.
Rosenbaum, U., Bogena, H. R., Herbst, M., Huisman, J. A., Peterson, T. J., Weuthen, A., Western, A. W., and Vereecken, H.: Seasonal and event dynamics of spatial soil moisture patterns at the small catchment scale, Water Resour. Res., 48, W10544, https://doi.org/10.1029/2011wr011518, 2012.
Ryu, D. and Famiglietti, J. S.: Characterization of footprint-scale surface soil moisture variability using Gaussian and beta distribution functions during the Southern Great Plains 1997 (SGP97) hydrology experiment, Water Resour. Res., 41, W12433, https://doi.org/10.1029/2004wr003835, 2005.
Schmidt, J. and Hewitt, A.: Fuzzy land element classification from DTMs based on geometry and terrain position, Geoderma, 121, 243–256, https://doi.org/10.1016/j.geoderma.2003.10.008, 2004.
Seneviratne, S. I., Corti, T., Davin, E. L., Hirschi, M., Jaeger, E. B., Lehner, I., Orlowsky, B., and Teuling, A. J.: Investigating soil moisture-climate interactions in a changing climate: A review, Earth-Sci. Rev., 99, 125–161, https://doi.org/10.1016/j.earscirev.2010.02.004, 2010.
Sidle, R. C.: Field observations and process understanding in hydrology: essential components in scaling, Hydrol. Process., 20, 1439–1445, https://doi.org/10.1002/hyp.6191, 2006.
Soulsby, C., Tetzlaff, D., van den Bedem, N., Malcolm, I. A., Bacon, P. J., and Youngson, A. F.: Inferring groundwater influences on surface water in montane catchments from hydrochemical surveys of springs and streamwaters, J. Hydrol., 333, 199–213, https://doi.org/10.1016/j.jhydrol.2006.08.016, 2007.
Soulsby, C., Neal, C., Laudon, H., Burns, D. A., Merot, P., Bonell, M., Dunn, S. M., and Tetzlaff, D.: Catchment data for process conceptualization: simply not enough?, Hydrol. Process., 22, 2057–2061, https://doi.org/10.1002/hyp.7068, 2008.
Tetzlaff, D., McDonnell, J. J., Uhlenbrook, S., McGuire, K. J., Bogaart, P. W., Naef, F., Baird, A. J., Dunn, S. M., and Soulsby, C.: Conceptualizing catchment processes: simply too complex?, Hydrol. Process., 22, 1727–1730, https://doi.org/10.1002/hyp.7069, 2008.
Teuling, A. J. and Troch, P. A.: Improved understanding of soil moisture variability dynamics, Geophys. Res. Lett., 32, L05404, https://doi.org/10.1029/2004gl021935, 2005.
Teuling, A. J., Uijlenhoet, R., and Troch, P. A.: On bimodality in warm season soil moisture observations, Geophys. Res. Lett., 32, L13402, https://doi.org/10.1029/2005gl023223, 2005.
Teuling, A. J., Uijlenhoet, R., Hupet, F., van Loon, E. E., and Troch, P. A.: Estimating spatial mean root-zone soil moisture from point-scale observations, Hydrol. Earth Syst. Sci., 10, 755–767, https://doi.org/10.5194/hess-10-755-2006, 2006.
Teuling, A. J., Hupet, F., Uijlenhoet, R., and Troch, P. A.: Climate variability effects on spatial soil moisture dynamics, Geophys. Res. Lett., 34, L06406, https://doi.org/10.1029/2006gl029080, 2007.
Tiedeman, C. R., Goode, D. J., and Hsieh, P. A.: Characterizing a ground water basin in a new England mountain and valley terrain, Ground Water, 36, 611–620, https://doi.org/10.1111/j.1745-6584.1998.tb02835.x, 1998.
Troch, P. A., Carrillo, G. A., Heidbuchel, I., Rajagopal, S., Switanek, M., Volkmann, T. H. M., and Yaeger, M.: Dealing with catchment heterogeneity in watershed hydrology: A review of recent progress towards new hydrological theory, Geogr. Compass, 3, 375–392, 2008.
Tromp-van Meerveld, H. J., and McDonnell, J. J.: Comment to "Spatial correlation of soil moisture in small catchments and its relationship to dominant spatial hydrological processes, Journal of Hydrology 286: 113–134", J. Hydrol., 303, 307–312, https://doi.org/10.1016/j.jhydrol.2004.09.002, 2005.
Tromp-van Meerveld, H. J., and McDonnell, J. J.: Threshold relations in subsurface stormflow: 2. The fill and spill hypothesis, Water Resour. Res., 42, W02411, https://doi.org/10.1029/2004wr003800, 2006a.
Tromp-van Meerveld, H. J. and McDonnell, J. J.: Threshold relations in subsurface stormflow: 1. A 147-storm analysis of the Panola hillslope, Water Resour. Res., 42, W02410, https://doi.org/10.1029/2004wr003778, 2006b.
Unland, N. P., Cartwright, I., Andersen, M. S., Rau, G. C., Reed, J., Gilfedder, B. S., Atkinson, A. P., and Hofmann, H.: Investigating the spatio-temporal variability in groundwater and surface water interactions: a multi-technique approach, Hydrol. Earth Syst. Sci., 17, 3437–3453, https://doi.org/10.5194/hess-17-3437-2013, 2013.
Vidon, P. G. F. and Hill, A. R.: Landscape controls on the hydrology of stream riparian zones, J. Hydrol., 292, 210–228, https://doi.org/10.1016/j.jhydrol.2004.01.005, 2004.
Warmerdam, P. and Stricker, H.: Fundamental hydrological research results drawn from studies in small catchments, in: Status and Perspectives of Hydrology in Small Basins, IAHS Publ., Proceedings of the Workshop, 30 March–2 April 2009, Goslar-Hahnenklee, Germany, 47–53, 2009.
Western, A. W., Bloschl, G., and Grayson, R. B.: Geostatistical characterisation of soil moisture patterns in the Tarrawarra a catchment, J. Hydrol., 205, 20–37, https://doi.org/10.1016/s0022-1694(97)00142-x, 1998.
Western, A. W., Grayson, R. B., and Bloschl, G.: Scaling of soil moisture: A hydrologic perspective, Annu. Rev. Earth Planet. Sci., 30, 149–180, 2002.
Wilson, D. J., Western, A. W., Grayson, R. B., Berg, A. A., Lear, M. S., Rodell, M., Famiglietti, J. S., Woods, R. A., and McMahon, T. A.: Spatial distribution of soil moisture over 6 and 30 cm depth, Mahurangi river catchment, New Zealand, J. Hydrol., 276, 254-274, https://doi.org/10.1016/s0022-1694(03)00060-x, 2003.
Wilson, D. J., Western, A. W., and Grayson, R. B.: Identifying and quantifying sources of variability in temporal and spatial soil moisture observations, Water Resour. Res., 40, W02507, https://doi.org/10.1029/2003wr002306, 2004.
Winter, T. C., Buso, D. C., Shattuck, P. C., Harte, P. T., Vroblesky, D. A., and Goode, D. J.: The effect of terrace geology on ground-water movement and on the interaction of ground water and surface water on a mountainside near Mirror Lake, New Hampshire, USA, Hydrol. Process., 22, 21–32, https://doi.org/10.1002/hyp.6593, 2008.
Wood, E. F., Lettenmaier, D. P., and Zartarian, V. G.: A land-surface hydrology parameterization with subgrid variability for general-circulation models, J. Geophys. Res.-Atmos., 97, 2717–2728, 1992.
Woods, R. A. and Rowe, L.: The changing spatial variability of subsurface flow across a hillside, J. Hydrol., 35, 51–86, 1996.
Woods, R. A., Grayson, R. B., Western, A. W., Duncan, M. J., Wilson, D. J., Young, R. I., Ibbitt, R. P., Henderson, R. D., and McMahon, T. A.: Experimental Design and Initial Results from the Mahurangi River Variability Experiment: MARVEX., in: Observations and Modelling of Land Surface Hydrological Processes, edited by: Lakshmi, V., Albertson, J. D., and Schaake, J., Water Resources Monographs, American Geophysical Union, Washington, D.C., 201–213, 2001.
Zimmer, M. A., Bailey, S. W., McGuire, K. J., and Bullen, T. D.: Fine scale variations of surface water chemistry in an ephemeral to perennial drainage network, Hydrol. Process., 27, 3438–3451, https://doi.org/10.1002/hyp.9449, 2012.
Short summary
River flows depend not only on how much water is in a catchment, but also on where the water is stored, which changes over time. We monitored streamflow, soil moisture, and groundwater levels in a NZ catchment, to find out what controls water storage and variability. We found that the catchment had a summer mode where water storage is controlled by near-surface interactions of water with soils and vegetation, and a winter mode where water storage is controlled by deeper groundwater movement.
River flows depend not only on how much water is in a catchment, but also on where the water is...
