Big Thompson HUC8 10190006
A 2,156 km² sub-basin of the Missouri region in CO. Drought coverage is from the US Drought Monitor (map of 2026-09-01); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
48
Stressed
Drought index
342
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
67%
of 3 reporting
Median flow
71%
p21 of record
Water assets
1,209
51 springs · 132 wells
USGS gauges (5)
- THE LOCH OUTLET - LOCH VALE4017331053924044 cfsp20 · below normal
- BIG THOMPSON BL MORAINE PARK NR ESTES PARK, CO40211410535010114 cfsp21 · below normal
- BIG THOMPSON RIVER AT LOVELAND, CO.0674151051 cfsp54 · normal
- ANDREWS CREEK-LOCH VALE-RMNP4017231054000002 cfsno long-term record
- ANDREWS SPRING 14017271054000000 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 342 | 100 | 2/3 | p21 |
Top water assets
- 76Rehmer Res — South Platte Riverwell
- 76Kammerzell Well 0250 — Groundwater: South Platte Riverwell
- 76Shable Well 3-14693 — Groundwater: South Platte Riverwell
- 76Bernhardt Well 2-82 — Groundwater: South Platte Riverwell
- 76Bernhardt Well 1-11739 — Groundwater: South Platte Riverwell
- 76Shable Well 3-0272 — Groundwater: South Platte Riverwell
- 73Dos Rios W Rf-257(13950) — Groundwater: South Platte Riverwell
- 73Shable Well 2-0271 — Groundwater: South Platte Riverwell
- 73Bernhardt Well 6-13940 — Groundwater: South Platte Riverwell
- 70Flatiron Damreservoir