Hydrohistorian
USBR Power Plant at Big Thompson Canyon Mouth
River gage · BTPPMCCO · Division 1 · Water District 4 · Larimer County
The record
Period of record
1996-10-01 → 2026-08-15
Daily values
10,293
Latest cached reading
84.1 cfs (2026-08-15)
Trend
decreasing, -17.34 cfs/decade (-21.4% of median)
Pettitt changepoint
~2011
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
Loading chart…
Where it sits
Location as DWR records it (5.0).
Provenance
DWR station abbreviation BTPPMCCO; recorded station name “USBR POWER PLANT AT BIG THOMPSON CANYON MOUTH”; operated by NWBOR. 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.