Severn HUC8 02060004
A 955 km² sub-basin of the Mid-Atlantic region in MD. 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
56
Moderate
Drought index
89
Abnormally dry
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
36%
p10 of record
Water assets
2,309
0 springs · 1,918 wells
USGS gauges (1)
- SOUTH FORK JABEZ BRANCH AT MILLERSVILLE, MD015897950 cfsp10 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-20 | 89 | 0 | 1/1 | p10 |
| 2026-10-19 | 89 | 0 | 1/1 | p16 |
| 2026-10-18 | 89 | 0 | 1/1 | p18 |
| 2026-10-17 | 89 | 0 | 1/1 | p20 |
| 2026-10-16 | 89 | 0 | 1/1 | p9 |
| 2026-10-15 | 89 | 0 | 1/1 | p9 |
| 2026-10-14 | 89 | 0 | 1/1 | p8 |
| 2026-10-13 | 89 | 0 | — | — |
| 2026-10-12 | 89 | 0 | — | — |
| 2026-10-11 | 89 | 0 | — | — |
| 2026-10-10 | 89 | 0 | — | — |
| 2026-10-09 | 89 | 0 | — | — |
| 2026-10-08 | 100 | 0 | — | — |
| 2026-10-07 | 100 | 0 | 1/1 | p13 |
Top water assets
- 66Cove Point Lng Secondary Damreservoir
- 66Cove Point Lng Main Damreservoir
- 66Heritage Harbour (Mastline Drive)reservoir
- 65South River Colony Parcel A Swm Lakereservoir
- 65Annapolis Reservoirreservoir
- 65Severn Riverriver
- 65Lake Ridge Community Pond Dam (Alta Drive)reservoir
- 65Lake Waterford Damreservoir
- 65Seven Oaks Swm Damreservoir
- 65Riva Trace Community Pondreservoir