Lower Ouachita HUC8 08040207
A 1,909 km² sub-basin of the Lower Mississippi region in LA. 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
42
Stressed
Drought index
319
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
100%
of 1 reporting
Median flow
40%
p24 of record
Water assets
1,098
2 springs · 750 wells
USGS gauges (1)
- Ouachita River at West Monroe, LA07367005932 cfsp24 · below normal
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-10-21 | 319 | 100 | 1/1 | p24 |
| 2026-10-20 | 319 | 100 | 0/1 | p38 |
| 2026-10-19 | 319 | 100 | 1/1 | p17 |
| 2026-10-18 | 319 | 100 | 0/1 | p28 |
| 2026-10-17 | 319 | 100 | 0/1 | p26 |
| 2026-10-16 | 319 | 100 | 1/1 | p14 |
| 2026-10-15 | 318 | 100 | 1/1 | p16 |
| 2026-10-14 | 318 | 100 | 0/1 | p28 |
| 2026-10-13 | 318 | 100 | 1/1 | p16 |
| 2026-10-12 | 318 | 100 | 0/1 | p64 |
| 2026-10-11 | 318 | 100 | 1/1 | p10 |
| 2026-10-10 | 318 | 100 | 1/1 | p17 |
| 2026-10-09 | 318 | 100 | 1/1 | p20 |
| 2026-10-08 | 300 | 100 | 1/1 | p24 |
Top water assets
- 66Bayou Desiard Damreservoir
- 66Bushley Bayou Damreservoir
- 65Brushy Lakereservoir
- 65Bayou Desiard Bartholomew Damreservoir
- 65Wallace Lake - Catahoula Damreservoir
- 65Bayou Desiard Midwayreservoir
- 65Restoration Park Damreservoir
- 65Hannas Run Damreservoir
- 65Ouachita River At West Monroe, Lariver
- 65West Lake Subdivision Damreservoir