Upper North Platte HUC8 10180002
A 7,666 km² sub-basin of the Missouri region in CO, WY. 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
36
Stressed
Drought index
291
Severe
Area in D2+
91.01%
0% exceptional (D4)
Gauges below normal
100%
of 4 reporting
Median flow
50%
p8 of record
Water assets
1,019
220 springs · 292 wells
USGS gauges (4)
- N PLATTE RIV AB SEMINOE RESERVOIR, NR SINCLAIR, WY0663000069 cfsp6 · much below normal
- ENCAMPMENT RIVER AT MOUTH, NEAR ENCAMPMENT, WY0662500017 cfsp8 · much below normal
- ENCAMPMENT RIVER AB HOG PARK CR, NR ENCAMPMENT, WY0662380016 cfsp9 · much below normal
- NORTH BRUSH CREEK NEAR SARATOGA, WY066227007 cfsp16 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 291 | 91.01 | 4/4 | p8 |
Top water assets
- 71Hog Park Main Damreservoir
- 69Camp Creekriver
- 69North Platte River Near Northgate, Coriver
- 69North Brush Creek Near Saratoga, Wyriver
- 69North Platte Riverriver
- 69South Brush Creekriver
- 69Encampment River Ab Hog Park Cr, Nr Encampment, Wyriver
- 69N Platte Riv Ab Seminoe Reservoir, Nr Sinclair, Wyriver
- 69Encampment River At Mouth, Near Encampment, Wyriver
- 69South Fork Hog Park Creekriver