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〕 | mouth_name = Owyhee River | mouth_location = near Rome | mouth_district = Malheur County | mouth_region = | mouth_state = Oregon | mouth_country = | mouth_note = | mouth_lat_d = 42 | mouth_lat_m = 51 | mouth_lat_s = 45 | mouth_lat_NS = N | mouth_long_d = 117 | mouth_long_m = 38 | mouth_long_s = 29 | mouth_long_EW = W | mouth_coordinates_note = 〔 | mouth_elevation_imperial = 3363 | mouth_elevation_note = 〔 | length_imperial = 99 | length_round = 0 | length_note = | watershed_imperial = 1305 | watershed_round = 0 | watershed_note = 〔NRCS, p. 2〕 | discharge_location = near Oregon–Idaho border | discharge_round = 0 | discharge_imperial = 183 | discharge_note = 〔 | discharge_min_imperial = 1.2 | discharge_max_imperial = 7530 | discharge1_location = | discharge1_imperial = | discharge1_note = | map = | map_size = | map_caption = |map_alt = | map1 = Oregon Locator Map.PNG | map1_size = 300 | map1_caption = Location of the mouth of Jordan Creek in Oregon | map1_alt = | map1_locator = Oregon | commons = }} Jordan Creek is a 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.〔NRCS, p. 10〕 The creek is named for Michael M. Jordan, who led a party that discovered gold along the creek in 1863.〔McArthur, pp. 518–19〕 ==Watershed== Jordan Creek's watershed of 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.〔Idaho DEQ, pp. 31–32〕 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.〔Idaho DEQ, p. xviii〕 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 a year in the mountains of Idaho to about in the plateaus of eastern Oregon.〔Idaho DEQ, p. 1〕 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.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jordan Creek (Owyhee River)」の詳細全文を読む スポンサード リンク
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