Visual. Look for flows of about 250 cfs. There was a USGS gauge on this river (stn. 12054500, 1951-1979, 51.3 sq. mi.) but it is no longer active.
| When | River/Gauge | Subject | Level | Reporter |
|---|---|---|---|---|
| 5y190d10h30m | Hamma Hamma [WA] |
Upper Hamma Hamma |
n/a | Thomas O'Keefe |