Hydrohistorian
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Hermosa Creek near Hermosa
River gage · HERHERCO · USGS 09361000 · Division 7 · Water District 30 · La Plata 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.
The water itself
USGS keeps a sensor here. Latest readings, with the last 30 days of daily means beside each. Provisional: not yet reviewed by USGS, and revised when it is.
Fetched 2026-10-23 03:22 UTC from USGS NWIS (site 09361000). The USGS page has the full sensor record; every Colorado sensor site is listed on one page.
Annual flow & trend
Chart: annual mean flow at Hermosa Creek near Hermosa, water years 1920 to 2026. The measured record is no trend at -10.28 cubic feet per second per decade. 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.
Provenance
DWR station abbreviation HERHERCO; recorded station name “HERMOSA CREEK NEAR HERMOSA, 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.