Hydrohistorian
Weminuche Pass Ditch at Weminuche Pass
Transbasin diversion gage · WEMDITCO · USGS 09351500 · Division 3 · Water District 20 · Hinsdale County
Live gage at DWR ↗ · USGS monitoring location ↗ · Download daily record (CSV)
What this gage meters
This is not a natural stream record. The Weminuche Pass Ditch moves water from Weminuche Creek, 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
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
Where it sits
Location as DWR records it (5.0).
Provenance
DWR station abbreviation WEMDITCO; recorded station name “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.