Cow Creek is a tributary of the Palouse River in the southern part of Latah County and northern part of Nez Perce County, Idaho. The creek flows primarily southwest for about 18.5 miles before it enters Union Flat Creek, near Uniontown, Washington. The headwaters of Cow Creek originate on the south slopes of Paradise Ridge, south of Moscow, Idaho.

Watershed elevation varies from approximately 3,000 feet above sea level at the headwaters to just under 2,500 feet near Uniontown, WA. The drainage area of Cow Creek watershed is 35,757 acres. Climate is typical for the Palouse region, located in southeastern Washington and northern Idaho. Due to the high elevation (greater than 2000 feet), this area receives higher precipitation than much of the surrounding lower area. The combination of rich less soil and abundant rainfall results in a very fertile agricultural area. Temperatures range from average daily high temperatures of 85 degrees Fahrenheit in the summer to 35 degrees in the winter. Average daily minimum temperatures are around 50 degrees in the summer, reaching as low as 23 degrees in the winter.

Cow Creek Watershed Location Map

Cow Creek Water Quality Monitoring Report - 2008

Cow Creek Physical Characteristics - 2002