Hydrohistorian
Sand Creek at Great Sand Dunes National Park
River gage · SANDUNCO · Division 3 · Water District 35 · Saguache County
The record
Period of record
1992-10-11 → 2026-07-06
Daily values
8,715
Latest cached reading
0.8 cfs (2026-07-06)
Trend
decreasing, -156.21 cfs/decade
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 (5.0).
Provenance
DWR station abbreviation SANDUNCO; recorded station name “SAND CREEK AT GREAT SAND DUNES NATIONAL PARK”; 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.