Apalachee Bay-St. Marks HUC8 03120001
A 3,403 km² sub-basin of the South Atlantic-Gulf region in FL, GA. 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
59
Moderate
Drought index
137
Moderate
Area in D2+
0%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
84%
p35 of record
Water assets
1,095
198 springs · 238 wells
USGS gauges (3)
- ST. MARKS RIVER NEAR NEWPORT, FLA.02326900377 cfsp9 · much below normal
- WAKULLA RIVER NEAR CRAWFORDVILLE, FL02327022708 cfsp61 · normal
- SPRING CREEK NEAR SPRING CREEK, FL023270311,140 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 137 | 0 | 1/2 | p35 |
Top water assets
- 65SPRING CREEK RISE #1spring
- 65SPRING CREEK SPRING #9spring
- 65SPRING CREEK SPRING #8spring
- 65Langley Damreservoir
- 65CHICKEN BRANCH SPRINGspring
- 65Lake Jean/Gilbert Pondreservoir
- 65Black Creekriver
- 65Lake Louise Damreservoir
- 65East River Pool Damreservoir
- 65NATURAL BRIDGE SPRING #1 (LEON)spring