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Water Resources Research

Two maps of the San Joaquin Valley showing geodetic observations for a consecutive dry water year (left) and wet water year (right)
Posted inEditors' Highlights

Satellites Detect Groundwater Recharge for San Joaquin Valley

by D. Long 26 April 20211 November 2021

A new study integrates spaceborne InSAR time series and GPS to resolve spatiotemporal patterns of deformation across the San Joaquin Valley indicating recharge areas and pathways for groundwater flow.

The Emme River in Switzerland
Posted inResearch Spotlights

Tracing Water from River to Aquifer

by Aaron Sidder 20 April 202128 September 2021

A new technique using dissolved noble gas tracers sheds light on how water moves through an aquifer, with implications for water resources and their vulnerability to climate change.

Two maps of the Missouri river basin showing estimates of river discharge in a hydrological model (top) and when the model incorporates satellite data (bottom).
Posted inEditors' Highlights

Gauging Ungauged River Basins with Smart Remote Sensing

by Marc F. P. Bierkens 10 March 202131 March 2022

A clever combination of hydrologic modelling and discharge estimates from the Landsat satellite provides good discharge estimates throughout the Missouri river basin.

Observed median July temperatures in eleven headwater streams by the Agashashok, Cutler, and Imelyak rivers in the Noatak river basin.
Posted inEditors' Highlights

Thawing Permafrost May Cause Streams to Cool

by D. Moore 3 March 202124 February 2021

Permafrost thawing associated with climate warming increases contributions to streamflow by deeper, cooler groundwater flow paths, which may result in lower summer stream temperatures.

Map of sites in USDA’s Long-Term Agroecosystem Research network
Posted inResearch Spotlights

Big Benefits from Experimental Watersheds

by Terri Cook 18 February 2021

Scientific insights from the Agricultural Research Service’s long-term study sites underpin dozens of models and research methods that guide global land management and conservation practices.

Tucson, Arizona, with the Santa Catalina Mountains in the background
Posted inResearch Spotlights

Parsing Routes to Aquifer Recharge Along Mountain Fronts

by Terri Cook 8 February 202128 January 2022

Research from the Tucson Basin indicates that tracers can be used to distinguish surface and subsurface recharge, providing crucial data to support sustainable water management in arid environments.

System diagrams showing four-step process for leak detection
Posted inEditors' Highlights

A Smart Solution to Find Leaks in Water Distribution Networks

by Jim Hall 18 December 202010 December 2020

By systematically turning valves off and on in water distribution networks, researchers can locate pipe leaks, which could help to save huge quantities of drinking water.

Two plots showing cash flow and maximum debt for a hydropower utility with three different financial management strategies
Posted inEditors' Highlights

How to Hedge the Risk of Reduced Snowpack for Hydropower

by Jim Hall 11 December 202010 December 2020

A new index insurance contract – a financial product innovation seeking to cope with climatic variability – could help hydropower operators to manage climate risks.

Six plots showing spatial distribution of steady-state groundwater aquifer salinity (colors) and flow streamlines (white) for the two-dimensional simulations of the floodplain
Posted inEditors' Highlights

Evaporation Reverses Groundwater Flow and Forms Hyper-Salinity

by D. Scott Mackay 4 December 202030 November 2020

A numerical model of groundwater-surface water systems shows how floodplain evaporation can reverse stream-groundwater flow and produce strong buoyancy changes associated with salinity.

View toward the sky from beneath Oregon white oak trees
Posted inResearch Spotlights

How Some Trees Survive the Summer Dry Season

by Terri Cook 3 December 20203 December 2021

Oak trees in California seasonally tap moisture in unsaturated soil and weathered bedrock, even when the groundwater table is within reach of their roots.

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