- elevation 7,551 ft (2,302 m) - average 183 cu ft/s (5 m/s) Basin area 3,380 km² Basin area 3,380 km² Mouth Owyhee River | - elevation 3,363 ft (1,025 m) Length 159 km Discharge 5.182 m³/s Source Owyhee Mountains Country United States of America | |
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- location near Silver City, Owyhee County, Idaho - location near Rome, Malheur County, Oregon - max 7,530 cu ft/s (213 m/s) | ||
Jordan Creek is a 99-mile (159 km) tributary of the Owyhee River in the northwestern United States. It flows generally west from near Silver City, Idaho, in the Owyhee Mountains to near Rome in the Oregon High Desert. Major tributaries are Big Boulder, Soda, Louse, Spring, Rock, Meadow, Combination, and Louisa creeks in Idaho and Cow Creek in Oregon. The creek is named for Michael M. Jordan, who led a party that discovered gold along the creek in 1863.
Contents
Map of Jordan Creek, Oregon, USA
WatershedEdit
Jordan Creek's watershed of 1,305 square miles (3,380 km2) is almost evenly divided between the two states, 46 percent in Idaho and 54 percent in Oregon. Although the upper parts of the basin in the Silver City Mountain Range supported mining camps and towns in the late 19th century through the early 20th century, they were generally abandoned when the gold and silver played out. Much of the population in the 21st century lives on small homesteads, ranches, and farms scattered throughout the watershed. Jordan Valley, Oregon, is the basin's only population center that has permanent, year-round residents, while Silver City has mostly part-time or weekend residents.
Land use in the watershed is divided among irrigated agriculture, range land, forests, mining, and riparian zones. The primary uses are cow-calf grazing in the uplands and hay production in the irrigated lowlands. Average precipitation varies from about 21 inches (53 cm) a year in the mountains of Idaho to about 11 inches (28 cm) in the plateaus of eastern Oregon. 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.
DischargeEdit
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). The lowest recorded discharge was 1.2 cubic feet per second (0.034 m3/s) in September 1962, and the highest was 7,530 cubic feet per second (213 m3/s) on December 31, 1965. This flow came from slightly less than 46 percent of the total watershed.