Click a watershed on the map, or choose the state, a watershed, or a county below. Shading shows reported water as a share of exercisable face value in the latest complete water year.
Table of the same figures (text twin)
Sources. State Water Resources Control Board, eWRIMS Water Rights List (2025-08-05) and Water Use Reported (2025-08-26). Sacramento Valley water-year type: CDEC water-year classification (Bulletin 120 and WSIHIST), served by the Water Supply Live set on this site.
Screening rule. A report is set aside when it exceeds twice the right’s own recorded maximum, reads as gallons entered as acre-feet, is implausible with no recorded maximum, or is an outlier against the right’s own history; nothing is corrected, and the set-aside share of face value is stated for every year. Full rules: definitions .
Reported use. eWRIMS carries no evapotranspiration-based consumptive use. “Reported use” is the amount the holder reports as beneficially used, the nearest figure in the record to water consumed; 78% of filers that reported both figures in 2023 reported use equal to diversion. Watershed and statewide totals count water more than once as it is re-diverted downstream, so compare watersheds to each other and to their own face value, not to runoff.
conciseVerbosity is an independent personal project; the views and tools here are separate from the organizations I serve.