Blackfoot HUC8 17040207
A 3,290 km² sub-basin of the Pacific Northwest region in ID. 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
396
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
38%
of 8 reporting
Median flow
76%
p42 of record
Water assets
676
21 springs · 222 wells
USGS gauges (8)
- BLACKFOOT RIVER AB RESERVOIR NR HENRY ID1306300016 cfsp5 · much below normal
- SAND CREEK NEAR UCON ID13058510223 cfsp10 · much below normal
- BLACKFOOT RIVER NR SHELLEY ID13066000263 cfsp19 · below normal
- GRAYS LAKE DIV TO BLACKFOOT R BASIN NR WAYAN, ID130573000 cfsp41 · normal
- BLACKFOOT RIVER NR BLACKFOOT ID1306850080 cfsp43 · normal
- BLACKFOOT RIVER BYPASS NR BLACKFOOT ID1306849516 cfsp53 · normal
- BLACKFOOT RIVER AND BYPASS CHANNEL NR BLACKFOOT ID1306850197 cfsp56 · normal
- BLACKFOOT RIVER BELOW NORTH CANAL AT BLACKFOOT ID1306830065 cfsp58 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 396 | 100 | 3/8 | p42 |
Top water assets
- 69Little Blackfoot Riverriver
- 69Slug Creekriver
- 69Corral Creekriver
- 69Corral Creekriver
- 69Grays Lake Div To Blackfoot R Basin Nr Wayan, Idriver
- 69Goodheart Creekriver
- 69Grave Creekriver
- 69Blackfoot River Ab Reservoir Nr Henry Idriver
- 69Diamond Creekriver
- 69Brush Creekriver