Hydrohistorian
Moffat Water Tunnel at East Portal
Transbasin diversion gage · MOFTUNCO · USGS 09022500 · Division 1 · Water District 6 · Gilpin County
Live gage at DWR ↗ · USGS monitoring location ↗ · Download daily record (CSV)
What this gage meters
This is not a natural stream record. The Moffat Water Tunnel moves water from Fraser River collection system (Div 5) into South Boulder Creek (Div 1), operated by Denver Water — 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 (digitized off map).
Provenance
DWR station abbreviation MOFTUNCO; recorded station name “MOFFAT WATER TUNNEL AT EAST PORTAL, CO.”; 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.