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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
42
Stressed
Drought index
304
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
88%
of 8 reporting
Median flow
33%
p10 of record
Water assets
676
21 springs · 222 wells
USGS gauges (8)
- SAND CREEK NEAR UCON ID130585100 cfsp1 · much below normal
- BLACKFOOT RIVER AB RESERVOIR NR HENRY ID1306300028 cfsp8 · much below normal
- BLACKFOOT RIVER BELOW NORTH CANAL AT BLACKFOOT ID1306830090 cfsp9 · much below normal
- BLACKFOOT RIVER NR BLACKFOOT ID1306850076 cfsp9 · much below normal
- BLACKFOOT RIVER BYPASS NR BLACKFOOT ID1306849514 cfsp12 · below normal
- BLACKFOOT RIVER AND BYPASS CHANNEL NR BLACKFOOT ID1306850191 cfsp13 · below normal
- BLACKFOOT RIVER NR SHELLEY ID1306600081 cfsp23 · below normal
- GRAYS LAKE DIV TO BLACKFOOT R BASIN NR WAYAN, ID130573000 cfsp25 · normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 304 | 100 | 7/8 | p10 |
| 2026-10-19 | 304 | 100 | 7/8 | p15 |
| 2026-10-18 | 304 | 100 | 7/8 | p17 |
| 2026-10-17 | 304 | 100 | 6/8 | p18 |
| 2026-10-16 | 304 | 100 | 5/8 | p21 |
| 2026-10-15 | 357 | 100 | 2/7 | p25 |
| 2026-10-14 | 357 | 100 | 2/8 | p32 |
| 2026-10-13 | 357 | 100 | 2/8 | p35 |
| 2026-10-12 | 357 | 100 | 2/8 | p45 |
| 2026-10-11 | 357 | 100 | 2/8 | p36 |
| 2026-10-10 | 357 | 100 | 4/8 | p23 |
| 2026-10-09 | 357 | 100 | 5/8 | p18 |
| 2026-10-08 | 382 | 100 | 5/8 | p17 |
| 2026-10-07 | 382 | 100 | 3/8 | p27 |
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