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Colorado River near Granby

River gage · COLNGBCO · USGS 09019500 · Division 5 · Water District 51 · Grand County

Live gage at DWR ↗ · USGS monitoring location ↗ · Download daily record (CSV)

The record

Period of record
1908-01-01 → 2026-07-06
Daily values
18,864
Latest cached reading
79.0 cfs (2026-07-06)
Trend
decreasing, -38.59 cfs/decade
Pettitt changepoint
~1949

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

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Where it sits

Location as DWR records it (5.0).

Provenance

DWR station abbreviation COLNGBCO; recorded station name “COLORADO RIVER NEAR GRANBY, CO”; operated by USGS. 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.