Cass HUC8 04080205
A 2,351 km² sub-basin of the Great Lakes region in MI. 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
72
Moderate
Drought index
100
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
0%
of 2 reporting
Median flow
407%
p90 of record
Water assets
463
0 springs · 33 wells
USGS gauges (3)
- CASS RIVER AT FRANKENMUTH, MI04151500241 cfsp90 · above normal
- CASS RIVER AT CASS CITY, MI0415050052 cfsp90 · much above normal
- CASS RIVER AT WAHJAMEGA, MI04150800380 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 100 | 0 | 0/2 | p90 |
Top water assets
- 65Boulton Drainriver
- 65Caro Damreservoir
- 65North Branch White Creekriver
- 65Millington Creekriver
- 65Murphy Lake Level Control Structurereservoir
- 65Cass River At Wahjamega, Miriver
- 65Cass River At Cass City, Miriver
- 65Shay Lake Level Control Structurereservoir
- 65Cass River At Frankenmuth, Miriver
- 65Cass Riverriver