Hydrohistorian
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South Platte River at Henderson
River gage · PLAHENCO · USGS 06720500 · Division 1 · Water District 2 · Adams 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
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 South Platte River at Henderson, water years 1926 to 2026. The measured record is increasing at 18.27 cubic feet per second per decade. A Pettitt changepoint is detected around 1968. The underlying yearly values are available as a CSV download linked at the top of this page.
Where it sits
Location as DWR records it (5.0).
Provenance
DWR station abbreviation PLAHENCO; recorded station name “SOUTH PLATTE RIVER AT HENDERSON, CO”; operated by DWR. 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.