Hydrohistorian
Tarbell Ditch near Cochetopa Pass
Transbasin diversion gage · TARBELCO · USGS 09118200 · Division 3 · Water District 26 · Saguache County
Live gage at DWR ↗ · USGS monitoring location ↗ · Download daily record (CSV)
What this gage meters
This is not a natural stream record. The Tarbell Ditch moves water from Cochetopa Creek, Gunnison basin at Cochetopa Pass (Div 4) into Saguache Creek, Rio Grande basin (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 TARBELCO; recorded station name “TARBELL DITCH NEAR COCHETOPA 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.