Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 26, issue 19
Articles | Volume 26, issue 19
https://doi.org/10.5194/hess-26-4933-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-26-4933-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 19
Research article
 | 
07 Oct 2022
Research article |  | 07 Oct 2022

A method for predicting hydrogen and oxygen isotope distributions across a region's river network using reach-scale environmental attributes

Bruce D. Dudley, Jing Yang, Ude Shankar, and Scott L. Graham

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Latest update: 29 Oct 2025
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Short summary
Stable isotope ratios (isotope values) of surface water reflect hydrological pathways, mixing processes, and atmospheric exchange within catchments. We used a water-balance-based mapping method, which represents patterns of surface flow and mixing, and added a regression-based correction step using catchment environmental characteristics to map water isotope ratios across all the rivers of New Zealand.
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