Hydrohistorian
South Boulder Creek near Eldorado Springs
River gage · BOCELSCO · Division 1 · Water District 6 · Boulder County
The record
Period of record
1896-01-01 → 2026-08-12
Daily values
46,337
Latest cached reading
9.6 cfs (2026-08-12)
Trend
decreasing, -2.67 cfs/decade (-4.4% of median)
Pettitt changepoint
~1952
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 BOCELSCO; recorded station name “SOUTH BOULDER CREEK NEAR ELDORADO SPRINGS, 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.