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

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

doi:https://doi.org/10.5194/hess-26-4933-2022

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

Supplement

https://doi.org/10.5194/hess-26-4933-2022-supplement

Data sets

NZ River Maps: An interactive online tool for mapping predicted freshwater variables across New Zealand A. L. Whitehead and D. J. Booker https://shiny.niwa.co.nz/nzrivermaps/

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.