Maximum discharge along the river was observed at the Cowlitz River At Castle Rock with a streamflow rate of 3,700 cfs. This is also the deepest point on the Cowlitz River, with a gauge stage of 33.14 ft. This river is monitored from 4 different streamgauging stations along the Cowlitz River, the highest being perched at an elevation of 1,053 ft, the Cowlitz River At Packwood.
| Location | Streamflow | River Stage | Air Temp | Elevation |
|---|---|---|---|---|
|
Cowlitz River At Packwood
USGS 14226500 |
328 cfs | 0.39 ft | ||
|
Cowlitz River At Randle
USGS 14231000 |
493 cfs | 3.64 ft | ||
|
Cowlitz River Below Mayfield Dam
USGS 14238000 |
3620 cfs | 10.58 ft | ||
|
Cowlitz River At Castle Rock
USGS 14243000 |
3700 cfs | 33.14 ft |
| Location | 24hr Change (%) | vs Average (%) | Volatility (%) | Minimum (cfs) | Maximum (cfs) |
|---|---|---|---|---|---|
|
Cowlitz River At Packwood
USGS 14226500 |
-16.75 | ||||
|
Cowlitz River Below Mayfield Dam
USGS 14238000 |
4.02 | ||||
|
Cowlitz River At Castle Rock
USGS 14243000 |
0.54 |
