Hydrohistorian
South Boulder Creek Diversion near Eldorado Springs
River gage · BOSDELCO · Division 1 · Water District 6 · Boulder County
The record
Period of record
1958-09-30 → 2026-08-12
Daily values
22,479
Latest cached reading
58.4 cfs (2026-08-12)
Trend
decreasing, -4.09 cfs/decade (-5.0% of median)
Pettitt changepoint
~1991
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 (digitized off map).
Provenance
DWR station abbreviation BOSDELCO; recorded station name “SOUTH BOULDER CREEK DIVERSION NEAR ELDORADO SPRINGS”; 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.