Lower Fox HUC8 07120007
A 2,857 km² sub-basin of the Upper Mississippi region in IL. 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
81
Healthy
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 9 reporting
Median flow
242%
p79 of record
Water assets
1,734
0 springs · 943 wells
USGS gauges (9)
- MILL CREEK NEAR BATAVIA, IL055513309 cfsp58 · normal
- FOX RIVER AT YORKVILLE, IL055515801,170 cfsp60 · normal
- FOX RIVER AT MONTGOMERY, IL055515401,070 cfsp62 · normal
- FOX RIVER AT SOUTH ELGIN, IL05551000972 cfsp72 · normal
- FERSON CREEK NEAR ST. CHARLES, IL0555120032 cfsp79 · above normal
- FOX RIVER AT DAYTON, IL055525002,090 cfsp80 · above normal
- BLACKBERRY CREEK NEAR YORKVILLE, IL0555170067 cfsp84 · above normal
- BLACKBERRY CREEK NEAR MONTGOMERY, IL0555167556 cfsp85 · above normal
- WAUBONSEE CREEK NEAR OSWEGO, IL0555154517 cfsp88 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 0 | 0 | 0/9 | p79 |
| 2026-10-20 | 0 | 0 | 0/9 | p76 |
| 2026-10-19 | 0 | 0 | 0/9 | p78 |
| 2026-10-18 | 0 | 0 | 0/9 | p81 |
| 2026-10-17 | 0 | 0 | 0/9 | p88 |
| 2026-10-16 | 0 | 0 | 0/9 | p86 |
| 2026-10-15 | 0 | 0 | 0/9 | p80 |
| 2026-10-14 | 0 | 0 | 0/9 | p79 |
| 2026-10-13 | 0 | 0 | 0/9 | p82 |
| 2026-10-12 | 0 | 0 | 0/9 | p86 |
| 2026-10-11 | 0 | 0 | 0/9 | p87 |
| 2026-10-10 | 0 | 0 | 0/9 | p91 |
| 2026-10-09 | 0 | 0 | 0/9 | p91 |
| 2026-10-08 | 0 | 0 | 0/9 | p91 |
Top water assets
- 77Cambrian-Ordovician Fossil Aquifer — Northern Illinoisfossil_water
- 66Holiday Lake Damreservoir
- 65Fox River At Montgomery, Ilriver
- 65North Aurora Towne Centre Basin B Damreservoir
- 65Blackberry Creek Near Montgomery, Ilriver
- 65Settlers Ridge Pond 1 Damreservoir
- 65Mill Creek Near Batavia, Ilriver
- 65Fox River At Yorkville, Ilriver
- 65Fox River At Dayton, Ilriver
- 65Waubonsee Creek Near Oswego, Ilriver