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〕 | mouth_elevation_imperial = 2192 | mouth_elevation_note = 〔 | length_imperial = 73.4 | length_round = 0 | length_note = 〔(【引用サイトリンク】 publisher = TopoQuest )〕 | watershed_imperial = 806 | watershed_round = 0 | watershed_note = | discharge_location = Ritter, Oregon, from the mouth | discharge_imperial = 257 | discharge_round = 2 | discharge_note = 〔The average discharge rate was calculated by adding average annual discharge rates for the 10 calendar years, 1997–2006, from the USGS gauge records and dividing by 10.〕 | discharge_max_imperial = 4730 | discharge_min_imperial = 0.90 | discharge1_location = | discharge1_note = | map = | map_size = | map_caption = | map1 = Oregon Locator Map.PNG | map1_size = 300 | map1_caption = Location of the mouth of the Middle Fork John Day River in Oregon | map1_locator = Oregon | commons = }} The Middle Fork John Day River is a tributary of the North Fork John Day River in the U.S. state of Oregon. It originates in the Blue Mountains of northeast Oregon in the Malheur National Forest near Austin and flows generally west to the North Fork about above Monument. The Middle Fork drainage basin covers about .〔 The Oregon Scenic Waterways Program, administered by the Oregon Parks and Recreation Department (OPRD) protects the river for most of its length. The state lists a segment of the Middle Fork from about from the mouth to about from the mouth as a Scenic River Area and the lower as a Natural River Area. People planning to cut trees, mine, build roads or structures, or to make other substantial changes within of the river must first notify OPRD and seek its approval. == See also == * List of rivers of Oregon * List of longest streams of Oregon 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「Middle Fork John Day River」の詳細全文を読む スポンサード リンク
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