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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
54
Moderate
Drought index
291
Severe
Area in D2+
91%
0% exceptional (D4)
Gauges below normal
50%
of 4 reporting
Median flow
82%
p32 of record
Water assets
1,019
220 springs · 292 wells
USGS gauges (4)
- NORTH BRUSH CREEK NEAR SARATOGA, WY066227009 cfsp14 · below normal
- N PLATTE RIV AB SEMINOE RESERVOIR, NR SINCLAIR, WY06630000269 cfsp24 · below normal
- ENCAMPMENT RIVER AB HOG PARK CR, NR ENCAMPMENT, WY0662380026 cfsp40 · normal
- ENCAMPMENT RIVER AT MOUTH, NEAR ENCAMPMENT, WY0662500093 cfsp59 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 291 | 91 | 2/4 | p32 |
| 2026-10-20 | 291 | 91 | 1/4 | p37 |
| 2026-10-19 | 291 | 91 | 1/4 | p36 |
| 2026-10-18 | 291 | 91 | 0/4 | p44 |
| 2026-10-17 | 291 | 91 | 0/4 | p53 |
| 2026-10-16 | 291 | 91 | 0/4 | p52 |
| 2026-10-15 | 291 | 91 | 1/4 | p58 |
| 2026-10-14 | 291 | 91 | 1/4 | p53 |
| 2026-10-13 | 291 | 91 | 2/4 | p36 |
| 2026-10-12 | 291 | 91 | 2/4 | p21 |
| 2026-10-11 | 291 | 91 | 3/4 | p15 |
| 2026-10-10 | 291 | 91 | 3/4 | p9 |
| 2026-10-09 | 291 | 91 | 3/4 | p9 |
| 2026-10-08 | 291 | 91 | 3/4 | p9 |
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