Huron-Vermilion HUC8 04100012
A 1,977 km² sub-basin of the Great Lakes region in OH. 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
84
Healthy
Drought index
0
None
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 3 reporting
Median flow
190%
p57 of record
Water assets
253
2 springs · 40 wells
USGS gauges (3)
- Huron River at Milan OH0419900034 cfsp56 · normal
- Vermilion River near Vermilion OH0419950015 cfsp57 · normal
- Old Woman Creek at Berlin Rd near Huron OH041991552 cfsp89 · above normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 0 | 0 | 0/3 | p57 |
Top water assets
- 66Big Bass Lake Damreservoir
- 66Norwalk Upper Reservoirreservoir
- 66Holiday Lake Damreservoir
- 66Norwalk Memorial Reservoirreservoir
- 65Huron River At Milan Ohriver
- 65Vermilion River Near Vermilion Ohriver
- 65Wakeman Wwt Lagoonreservoir
- 65Hoyek Lake Damreservoir
- 65Nova Pond Damreservoir
- 65Cooke Pond No. 1 Damreservoir