Supporting data for groundwater budget for the Portneuf Basin, southeastern Idaho, 2016 to 2023

The U.S. Geological Survey, in cooperation with the Idaho Department of Water Resources, developed a water budget for a representative average (2016), dry (2021), and wet (2023) year to quantify net aquifer inputs and outputs. The water budget is published in the companion report, SIR 2026-5075 (Groundwater Budget for the Portneuf River Basin, Southeastern Idaho by H.K. Richardson). This data release contains both spatial and tabular data, including study area boundaries, tributary delineations with flow estimates, irrigated lands boundaries with source water attributes, mean extents of Chesterfield Reservoir, long-term well measurements, Portneuf River flow adjusted for Chesterfield Reservoir releases, and volumetric sums of precipitation and evapotranspiration across major spatial areas. The data published here were generated for and used for the companion report.