Hamma Hamma River

Hamma Hamma River
Location of the mouth of the Hamma Hamma River in Washington
Location
CountryUnited States
StateWashington
CountyMason
Physical characteristics
SourceOlympic Mountains
 • coordinates47°34′1″N 123°19′5″W / 47.56694°N 123.31806°W / 47.56694; -123.31806
MouthHood Canal
 • coordinates
47°32′44″N 123°2′30″W / 47.54556°N 123.04167°W / 47.54556; -123.04167
Discharge 
 • locationnear Eldon
 • average364.4 cu ft/s (10.32 m3/s)
 • minimum39 cu ft/s (1.1 m3/s)
 • maximum6,010 cu ft/s (170 m3/s)

The Hamma Hamma River is a river on the Olympic Peninsula in the U.S. state of Washington. It rises near Mount Washington in the Olympic Mountains within the Olympic National Park and drains to Hood Canal and thence to the Pacific Ocean.

The name Hamma Hamma comes from a Twana village once located at the river's mouth and called Hab'hab, referring to a reed that grows along the river's banks.

At its mouth, the river splits off into to two channels which feed into the Hood Canal and create a marsh. There are two bridges that cross these parts and marsh called the North and South Hamma Hamma Bridges respectively.

Near the river, you can find the Hamma Hamma Balds Natural Area Preserve.