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 2026-10-13); streamflow classes place each USGS gauge's latest reading against its own day-of-year record.
Health score
65
Moderate
Drought index
280
Severe
Area in D2+
80.76%
0% exceptional (D4)
Gauges below normal
0%
of 2 reporting
Median flow
168%
p74 of record
Water assets
1,151
79 springs · 354 wells
USGS gauges (4)
- Mill Creek near Mill Creek, OK073312005 cfsp73 · normal
- Pennington Creek near Reagan, OK0733130024 cfsp75 · 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 |
|---|---|---|---|---|
| 2026-10-18 | 280 | 80.76 | 0/2 | p74 |
| 2026-10-17 | 280 | 80.76 | 0/2 | p75 |
| 2026-10-16 | 280 | 80.76 | 0/2 | p77 |
| 2026-10-15 | 288 | 87.99 | 0/2 | p82 |
| 2026-10-14 | 288 | 87.99 | 0/2 | p81 |
| 2026-10-13 | 288 | 87.99 | 0/2 | p74 |
| 2026-10-12 | 288 | 87.99 | 0/2 | p76 |
| 2026-10-11 | 288 | 87.99 | 0/2 | p74 |
| 2026-10-10 | 288 | 87.99 | 0/2 | p73 |
| 2026-10-09 | 288 | 87.99 | 0/2 | p80 |
| 2026-10-08 | 396 | 100 | 0/2 | p71 |
| 2026-10-07 | 396 | 100 | 0/2 | p69 |
| 2026-10-06 | 396 | 100 | 0/2 | p72 |
| 2026-10-05 | 396 | 100 | 0/2 | p76 |
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