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Pine River Weminuche Pass Ditch at Weminuche Pass

Transbasin diversion gage · PRWDITCO · USGS 09351000 · Division 3 · Water District 20 · Hinsdale 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

Two different numbers, deliberately: Flowing now is raw 15-minute telemetry, provisional and unreviewed. Latest cached reading is the end of the verified daily record. They are never merged, and the verified series is the one the trend is computed on.

What this gage meters

This is not a natural stream record. The Pine River-Weminuche Pass Ditch moves water from Pine River headwaters, San Juan basin (Div 7) into Rio Grande headwaters at Weminuche Pass (Div 3) — so this record is a ledger of those deliveries. Trends here reflect operational and demand decisions, not the basin's hydrology, and the basin trends page marks it accordingly (⇆). All of Colorado's curated transbasin diversions are collected at /transbasin.

The record

Period of record
1948-07-01 → 2026-10-18
Daily values
23,807
Flowing now
2.75 cfs 2026-10-21 02:15, 2.0 h ago
Latest cached reading
3.0 cfs (2026-10-18)
Trend
no trend, -0.0 cfs/decade (-0.2% 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

Chart: annual mean flow at Pine River Weminuche Pass Ditch at Weminuche Pass, water years 1948 to 2026. The measured record is no trend at -0.0 cubic feet per second per decade. The underlying yearly values are available as a CSV download linked at the top of this page.

Loading chart…

This gage measures the Pine River-Weminuche Pass Ditch, water carried across the Continental Divide. It is taken from Pine River headwaters, San Juan basin (Div 7) and delivered to Rio Grande headwaters at Weminuche Pass (Div 3) — so what this gage reads leaves one river basin for good and arrives in another.

The two ends: Pine R Weminuche Pass D (source, on Los Pinos River); Pine River Weminuche Pass Ditch (receiving, on Transbasin Water)

Decrees:

The ditch’s mapped channel is drawn on the map below where the USGS has surveyed it. Every crossing →

Where it sits

Location as DWR records it (5.0).

Provenance

DWR station abbreviation PRWDITCO; recorded station name “PINE RIVER WEMINUCHE PASS DITCH AT WEMINUCHE PASS”; 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.