Hydrohistorian

← Basin trends

Navajo River below Oso Diversion Dam near Chromo

River gage · NAVOSOCO · USGS 09344400 · Division 7 · Water District 77 · Archuleta County

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

The record

Period of record
1971-03-01 → 2026-07-06
Daily values
20,217
Latest cached reading
27.1 cfs (2026-07-06)
Trend
decreasing, -4.6 cfs/decade
Pettitt changepoint
~1999

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 (3).

Provenance

DWR station abbreviation NAVOSOCO; recorded station name “NAVAJO RIVER BELOW OSO DIVERSION DAM NEAR CHROMO”; 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.