Hydrohistorian
North Saint Vrain Creek below Buttonrock (Ralph Price) Reservoir
Reservoir gage · NSVBBRCO · Division 1 · Water District 5 · Boulder County
The record
Period of record
2013-05-20 → 2026-08-15
Daily values
4,820
Latest cached reading
21.0 cfs (2026-08-15)
Trend
no trend, -28.95 cfs/decade (-44.3% 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
Loading chart…
Where it sits
Location as DWR records it (5.0).
Provenance
DWR station abbreviation NSVBBRCO; recorded station name “NORTH SAINT VRAIN CREEK BELOW BUTTONROCK (RALPH PRICE) RESERVOIR”; 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.