Crab Creek

Crab Creek
Lower Crab Creek above confluence with Red Rock Coulee.
Mouth of Crab Creek in Washington
Location
CountryUnited States
StateWashington
CountyGrant County, Adams County, Lincoln County
CityMoses Lake
Physical characteristics
SourceNear Gettys Butte
 • locationLincoln County
 • coordinates47°42′42″N 117°54′24″W / 47.71167°N 117.90667°W / 47.71167; -117.90667
 • elevation2,730 ft (830 m)
MouthColumbia River
 • location
Grant County
 • coordinates
46°48′55″N 119°55′19″W / 46.81528°N 119.92194°W / 46.81528; -119.92194
 • elevation
489 ft (149 m)
Length163 mi (262 km)
Basin size5,097 sq mi (13,200 km2)
Discharge 
 • average201 cu ft/s (5.7 m3/s)
 • minimum10 cu ft/s (0.28 m3/s)
 • maximum936 cu ft/s (26.5 m3/s)
Basin features
Tributaries 
 • leftRocky Ford Creek
 • rightCoal Creek, Canniwai Creek, Wilson Creek, Red Rock Coulee

Crab Creek is a stream in the U.S. state of Washington. Named for the presence of crayfish, it is one of the few perennial streams in the Columbia Basin of central Washington, flowing from the northeastern Columbia River Plateau, roughly 5 km (3.1 mi) east of Reardan, west-southwest to empty into the Columbia River near the small town of Beverly. Its course exhibits many examples of the erosive powers of extremely large glacial Missoula Floods of the late Pleistocene, which scoured the region. In addition, Crab Creek and its region have been transformed by the large-scale irrigation of the Bureau of Reclamation's Columbia Basin Project (CBP), which has raised water table levels, significantly extending the length of Crab Creek and created new lakes and streams.

Crab Creek is 163 miles (262 km) long and drains a watershed in eastern Washington of 5,097 square miles (13,200 km2). It is sometimes referred to as the "longest ephemeral stream in North America".