Hydrohistorian
Log in

← Basin trends ·  All gages in this district

Illinois Creek at Walden

River gage · ILLWALCO · USGS 06618500 · Division 6 · Water District 47 · Jackson County

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

Source DWR administrative record · verify at DWR station ↗ Source Independent agency measurement · verify at USGS ↗ Source Our computation, no independent reference · computed here from the screened record

The record

Period of record
1923-05-01 → 1947-09-30
Daily values
8,919
Latest cached reading
12.0 cfs (1947-09-30)
Trend
decreasing, -21.4 cfs/decade (-91.7% of median)
Pettitt changepoint
~1933

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

Chart: annual mean flow at Illinois Creek at Walden, water years 1923 to 1947. The measured record is decreasing at -21.4 cubic feet per second per decade. A Pettitt changepoint is detected around 1933. The underlying yearly values are available as a CSV download linked at the top of this page.

Loading chart…

Where it sits

Location as DWR records it (5.0).

Provenance

DWR station abbreviation ILLWALCO; recorded station name “ILLINOIS CREEK AT WALDEN, 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.