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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
44
Stressed
Drought index
408
Exceptional
Area in D2+
100%
26.25% exceptional (D4)
Gauges below normal
67%
of 3 reporting
Median flow
78%
p24 of record
Water assets
1,209
51 springs · 132 wells
USGS gauges (5)
- BIG THOMPSON RIVER AT LOVELAND, CO.067415105 cfsp11 · below normal
- BIG THOMPSON BL MORAINE PARK NR ESTES PARK, CO4021141053501019 cfsp24 · below normal
- THE LOCH OUTLET - LOCH VALE4017331053924042 cfsp51 · normal
- ANDREWS CREEK-LOCH VALE-RMNP4017231054000001 cfsno long-term record
- ANDREWS SPRING 14017271054000000 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 408 | 100 | 2/3 | p24 |
| 2026-10-20 | 408 | 100 | 2/3 | p22 |
| 2026-10-19 | 408 | 100 | 1/3 | p28 |
| 2026-10-18 | 408 | 100 | 0/3 | p52 |
| 2026-10-17 | 408 | 100 | 0/3 | p53 |
| 2026-10-16 | 408 | 100 | 0/3 | p54 |
| 2026-10-15 | 408 | 100 | 0/3 | p57 |
| 2026-10-14 | 408 | 100 | 1/3 | p38 |
| 2026-10-13 | 408 | 100 | 2/3 | p24 |
| 2026-10-12 | 408 | 100 | 2/3 | p17 |
| 2026-10-11 | 408 | 100 | 2/3 | p16 |
| 2026-10-10 | 408 | 100 | 2/4 | p26 |
| 2026-10-09 | 408 | 100 | 1/3 | p51 |
| 2026-10-08 | 342 | 100 | 1/3 | p61 |
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