Jordan Creek is a 99-mile (159 km) tributary of the Owyhee River in the northwestern United States.

[3] It generally flows west from near Silver City, Idaho, in the Owyhee Mountains to near Rome in the Oregon High Desert.

[10] Much of the population in the 21st century lives on small homesteads, ranches, and farms scattered throughout the watershed.

[12] To control water flow for irrigation, most of the watershed's hydrology has been modified to some degree by large reservoirs in Oregon and in-stream diversions in Idaho.

[12] Based on 28 years of record-keeping from 1946 to 1971 and from 2003 to 2004, the average discharge of Jordan Creek, measured about 4 miles (6 km) upstream of the Oregon–Idaho border, is 183 cubic feet per second (5.2 m3/s).