Rock Creek is a tributary of the

Palouse River The Palouse River is a tributary of the Snake River in Washington and Idaho, in the northwest United States. It flows for U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed May 3, 2011 southw ...

in the U.S. state of

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...

. The source of the creek is Pine Lakes in the

Turnbull National Wildlife Refuge The Turnbull National Wildlife Refuge is located six miles (10 km) south of Cheney, Washington, on the eastern edge of the Columbia Basin in Spokane County in northeastern Washington. Turnbull NWR encompasses more than of the Channeled Sca ...

(TNWR). The creek flows through the TNWR and ultimately joins the Palouse River downstream from the

unincorporated Unincorporated may refer to: * Unincorporated area, land not governed by a local municipality * Unincorporated entity, a type of organization * Unincorporated territories of the United States, territories under U.S. jurisdiction, to which Congress ...

town of Winona, Washington. Rock Creek drains a basin of , 13 percent of the Palouse River basin. Rock Creek drains Rock Lake and, upstream from that, Bonnie Lake. Rock Lake has a maximum depth of and a mean depth of . Lakes within the Rock Creek drainage with managed fisheries include Rock and Bonnie Lakes, and Chapman Lake. Many small lakes in the drainage have no outlets, and some evaporate completely in dry weather.

Geological significance

As Rock Creek crosses the

Columbia River Plateau The Columbia Plateau is a geologic and geographic region that lies across parts of the U.S. states of Washington, Oregon, and Idaho. It is a wide flood basalt plateau between the Cascade Range and the Rocky Mountains, cut through by the Columbi ...

, it passes through the

Channeled Scablands The Channeled Scablands are a relatively barren and soil-free region of interconnected relict and dry flood channels, coulees and cataracts eroded into Palouse loess and the typically flat-lying basalt flows that remain after cataclysmic floods ...

, created by the

Missoula Floods The Missoula floods (also known as the Spokane floods or the Bretz floods or Bretz's floods) were cataclysmic glacial lake outburst floods that swept periodically across eastern Washington and down the Columbia River Gorge at the end of the las ...

that swept across eastern Washington during the

Pleistocene epoch The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...

. The creek follows one of many paths taken by the floods as they cut through the

Columbia River Basalt The Columbia River Basalt Group is the youngest, smallest and one of the best-preserved continental large igneous province, flood basalt province on Earth, covering over mainly eastern Oregon and Washington (state), Washington, western Idaho, a ...

. Notable geologic features in the Rock Creek basin include the scabland and Rock Lake. The creek parallels the adjacent Cow Creek scabland and joins the Palouse River just before it departs Washtucna Coulee, the abandoned flood-scoured course of the river.

Access

The

Palouse to Cascades State Park Trail The Palouse to Cascades State Park Trail, formerly known as the John Wayne Pioneer Trail and the Iron Horse Trail, is a rail trail that spans most of the U.S. state of Washington. It follows the former railway roadbed of the Chicago, Milwaukee ...

follows Rock Creek for a portion of the drainage, allowing unique access, particularly to Rock Lake.

References

{{authority control Rivers of Spokane County, Washington Rivers of Whitman County, Washington Rivers of Adams County, Washington Rivers of Washington (state)

Geological significance

Access

See also

References