Daily streamflow at USGS gauges compared against the 90th percentile threshold used in the State Water Board's streamlined water availability method for groundwater recharge diversions (December 1 – March 31).
Select a gauge on the map to see current flow, the 90th percentile threshold for the day, the allowable diversion rate, and how many eligible days each recent winter offered at that gauge.
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Informational only. This page does not constitute a water availability determination or authorization to divert. Diversions for groundwater recharge require a water right permit from the State Water Resources Control Board and are governed by the terms of that permit, including gauging, bypass, and accounting requirements. Streams designated fully appropriated may be unavailable regardless of flow.