Hydrohistorian

← Basin trends

Boulder Creek at North 75th St. near Boulder

River gage · BOCNORCO · USGS 06730200 · Division 1 · Water District 6 · Boulder County

Live gage at DWR ↗ · USGS monitoring location ↗ · Download daily record (CSV)

The record

Period of record
1986-10-01 → 2026-08-12
Daily values
14,561
Latest cached reading
64.8 cfs (2026-08-12)
Trend
decreasing, -6.8 cfs/decade (-7.9% of median)
Pettitt changepoint
~2001

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 (user supplied).

Provenance

DWR station abbreviation BOCNORCO; recorded station name “BOULDER CREEK AT NORTH 75TH ST. NEAR BOULDER, CO”; operated by USGS. 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.