Hydrohistorian

← Basin trends

Rio Grande at Monte Vista

River gage · RIOMONCO · USGS 08221500 · Division 3 · Water District 20 · Rio Grande County

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

The record

Period of record
1926-05-01 → 2026-07-06
Daily values
36,592
Latest cached reading
72.8 cfs (2026-07-06)
Trend
no trend, 7.48 cfs/decade (2.5% of median)

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

Loading chart…

Where it sits

Location as DWR records it (5.0).

Provenance

DWR station abbreviation RIOMONCO; recorded station name “RIO GRANDE AT MONTE VISTA”; 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.