Hydrohistorian
South Platte River below Chatfield Reservoir
Reservoir gage · PLACHACO · Division 1 · Water District 8 · Jefferson County
The record
Period of record
1986-07-01 → 2026-05-19
Daily values
14,543
Latest cached reading
6.2 cfs (2026-05-19)
Trend
no trend, -9.17 cfs/decade (-9.7% 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 (user supplied).
Provenance
DWR station abbreviation PLACHACO; recorded station name “SOUTH PLATTE RIVER BELOW CHATFIELD 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.