Hydrohistorian

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Rio Chama below El Vado Dam, Nm

River gage · RCHELVNM · USGS 08285500 · Division 3 · Water District 20

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

The record

Period of record
1935-10-30 → 2026-07-06
Daily values
33,123
Latest cached reading
104.0 cfs (2026-07-06)
Trend
no trend, 6.19 cfs/decade (1.6% of median)
Pettitt changepoint
~1978

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 RCHELVNM; recorded station name “RIO CHAMA BELOW EL VADO DAM, NM”; 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.