Lower Washita HUC8 11130304
A 1,894 km² sub-basin of the Arkansas-White-Red region in OK. 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
52
Moderate
Drought index
300
Extreme
Area in D2+
100%
0% exceptional (D4)
Gauges below normal
50%
of 2 reporting
Median flow
154%
p50 of record
Water assets
1,151
79 springs · 354 wells
USGS gauges (4)
- Pennington Creek near Reagan, OK0733130011 cfsp21 · below normal
- Mill Creek near Mill Creek, OK073312009 cfsp79 · above normal
- Pennington Creek North of Mill Creek, OK073312930 cfsno long-term record
- Pennington Creek East of Mill Creek, OK073312953 cfsno long-term record
Recent conditions
| Date | DSCI | D2+ % | Gauges low | Flow pct |
|---|---|---|---|---|
| 2026-09-07 | 300 | 100 | 1/2 | p50 |
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