Hydrohistorian
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Windy Gap Bypass Flume
River gage · WGPBPFCO · USGS WS1931 · Division 5 · Water District 51 · Grand County
Live gage at DWR ↗ · USGS monitoring location ↗ · Download daily record (CSV)
Source DWR administrative record · verify at DWR station ↗ Source Independent agency measurement · verify at USGS ↗ Source Our computation, no independent reference · computed here from the screened record
Two different numbers, deliberately: Flowing now is raw 15-minute telemetry, provisional and unreviewed. Latest cached reading is the end of the verified daily record. They are never merged, and the verified series is the one the trend is computed on.
The record
Readings come from the weekly-refreshed cache, never fetched live — the date beside the value says exactly how fresh it is. The live gage is one click up.
Annual flow & trend
Chart: annual mean flow at Windy Gap Bypass Flume, water years 2007 to 2026. The measured record is no trend at -7.04 cubic feet per second per decade. The underlying yearly values are available as a CSV download linked at the top of this page.
Provenance
DWR station abbreviation WGPBPFCO; recorded station name “WINDY GAP BYPASS FLUME”; operated by NCWCD. Daily flows from the DWR HydroBase snapshot plus CDSS REST updates, refreshed on the weekly cycle. Trend statistics are Mann-Kendall (Hamed-Rao corrected) with Sen's slope in native cfs, the same numbers as the basin Trends tab.