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Chapman Gulch Feeder Canal near Norrie

Ditch / canal gage · CHAGFOCO · USGS 09077940 · Division 5 · Water District 38 · Pitkin 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

The record

Period of record
1971-10-01 → 1983-09-30
Daily values
4,383
Latest cached reading
0.0 cfs (1983-09-30)
Trend
increasing, 6.8 cfs/decade (57.5% of median)
Pettitt changepoint
~1977

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 Chapman Gulch Feeder Canal near Norrie, water years 1971 to 1983. The measured record is increasing at 6.8 cubic feet per second per decade. A Pettitt changepoint is detected around 1977. The underlying yearly values are available as a CSV download linked at the top of this page.

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Where it sits

Location as DWR records it (5.0).

Provenance

DWR station abbreviation CHAGFOCO; recorded station name “CHAPMAN GULCH FEEDER CANAL NEAR NORRIE, 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.