Hydrohistorian
← Basin trends · All gages in this district
Los Pinos River near Bayfield
River gage · LOSBAYCO · USGS 09353500 · Division 7 · Water District 31 · 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.
Annual flow & trend
Chart: annual mean flow at Los Pinos River near Bayfield, water years 1927 to 1986. The measured record is no trend at 7.64 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 (5).
Seasonal runoff outlook
NRCS calls it even odds that this gage carries at least 19 thousand acre-feetA volume: one acre covered a foot deep, about 326,000 gallons -- roughly a suburban household's outdoor use for a year. over 06-01 to 07-31 — 24% of a normal season; almost certainly at least 10, probably not more than 44. Issued 2026-06-01 — the season’s final; new forecasts begin in January.
| 90% chance of at least | 70% chance of at least | 50% chance of at least | 30% chance of at least | 10% chance of at least | Normal |
|---|---|---|---|---|---|
| 10 kAF | 14 kAF | 19 kAF | 29 kAF | 44 kAF | 79 kAF |
The row is one season as a range of odds (exceedanceA forecast stated as odds of AT LEAST this much: the 90% exceedance value is a near-floor the river beats nine years in ten, the 10% value a near-ceiling it reaches one year in ten, and 50% is even odds -- as likely to come in above as below. values): the left end is a near-floor the river beats nine years in ten, the right a near-ceiling. How to read these numbers → Forecast by the NRCS National Water and Climate Center; shown beside the gage’s own record, which is what it is verified against on the report card.
Provenance
DWR station abbreviation LOSBAYCO; recorded station name “LOS PINOS RIVER NEAR BAYFIELD, 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.