Blue HUC8 14010002
A 1,769 km² sub-basin of the Upper Colorado 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
18
Critical
Drought index
489
Exceptional
Area in D2+
100%
89.01% exceptional (D4)
Gauges below normal
100%
of 9 reporting
Median flow
46%
p7 of record
Water assets
236
52 springs · 40 wells
USGS gauges (13)
- ELLIOTT CREEK FEEDER CANAL TO GREEN MTN RES, CO090565000 cfsp4 · much below normal
- BLUE RIVER AT BLUE RIVER, CO.090464906 cfsp5 · much below normal
- KEYSTONE GULCH NEAR DILLON, CO.090477001 cfsp6 · much below normal
- BLUE RIVER BELOW GREEN MOUNTAIN RESERVOIR, CO09057500250 cfsp7 · much below normal
- STRAIGHT CR BLW LASKEY GULCH NR DILLON, CO090510503 cfsp7 · much below normal
- BLUE RIVER NEAR DILLON, CO0904660030 cfsp7 · much below normal
- SNAKE RIVER NEAR MONTEZUMA, CO0904750018 cfsp8 · much below normal
- TENMILE CREEK BL NORTH TENMILE C, AT FRISCO, CO.0905010019 cfsp8 · much below normal
- BLUE RIVER BELOW DILLON, CO.0905070054 cfsp10 · below normal
- MONTE CRISTO DIVERSION NEAR HOOSIER PASS, CO090419000 cfsno long-term record
- BEMROSE-HOOSIER DIVERSION NEAR HOOSIER PASS, CO090443009 cfsno long-term record
- MCCULLOUGH-SP-CRYS-DIVERSION NEAR HOOSIER PASS, CO090448000 cfsno long-term record
- BLUE RIVER ABOVE GREEN MOUNTAIN RESERVOIR, CO.09053500217 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 489 | 100 | 9/9 | p7 |
Top water assets
- 69Straight Cr Blw Laskey Gulch Nr Dillon, Coriver
- 69Blue River At Blue River, Co.river
- 69Blue River Near Dillon, Coriver
- 69Keystone Gulch Near Dillon, Co.river
- 69Snake River Near Montezuma, Coriver
- 69Blue River Above Green Mountain Reservoir, Co.river
- 69Tenmile Creek Bl North Tenmile C, At Frisco, Co.river
- 69Blue River Below Dillon, Co.river
- 69Blue River Below Green Mountain Reservoir, Coriver
- 67Dillonreservoir