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Creek WA

Rock Creek

Washington • 45.5849, -123.9437
Hydrography profile Updated Dec 30, 2025
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USGS and NOAA data is for informational purposes. Source notes
Length
505 mi
812 km
Elevation
3,986′ → 19′
3,968 ft drop
Stream Order
7
Large River
Slope
0.15%
7.9 ft/mi
Drainage
98 mi²
254 km²
Avg Flow
-- cfs
1.8 mph velocity
Path to Mouth
207 mi
333 km to ocean
Classification
Tributary
Mid-reach
Elevation Profile
Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

EPA WQP MyWaterway
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Data from USGS & NOAA for informational purposes only. Read source and safety notes
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Access Sites on Rock Creek

There are 27 boat ramps, launches, and public access points on Rock Creek.