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〕 | mouth_name = Bull Run River | mouth_location = | mouth_district = | mouth_region = Multnomah County | mouth_state = Oregon | mouth_country = | mouth_note = | mouth_lat_d = 45 | mouth_lat_m = 29 | mouth_lat_s = 47 | mouth_lat_NS = N | mouth_long_d = 121 | mouth_long_m = 55 | mouth_long_s = 18 | mouth_long_EW = W | mouth_coordinates_note = 〔 | mouth_elevation_imperial = 1699 | mouth_elevation_note = 〔 | length_imperial = 4 | length_round = 0 | length_note = 〔 Approximate length determined by map scale and ruler.〕 | watershed_imperial = | watershed_round = 0 | watershed_note = 〔 | discharge_location = downstream of the source | discharge_round = 0 | discharge_imperial = 57.5 | discharge_note = | discharge_min_imperial = 1 | discharge_max_imperial = 2610 | discharge1_location = | discharge1_imperial = | discharge1_note = | map = Bull run river oregon watershed map.png | map_size = 300 | map_caption = Bull Run River watershed | map1 = Oregon Locator Map.PNG | map1_size = 300 | map1_caption = Location of the mouth of Blazed Alder Creek in Oregon | map1_locator = Oregon | commons = }} Blazed Alder Creek is a tributary, about long, of the Bull Run River in the U.S. state of Oregon.〔 Part of the system that provides drinking water to the city of Portland, it flows generally north through a protected part of the Mount Hood National Forest in Clackamas and Multnomah counties. The creek is named after a blazed (marked) alder tree that was used as a benchmark during early watershed surveys.〔 ==Course== Formed by the confluence of Bedrock Creek and Hickman Creek in Clackamas County, Blazed Alder Creek begins slightly north of Blazed Alder Butte and flows through the Mount Hood National Forest to meet the Bull Run River in Multnomah County. The creek lies entirely within the Bull Run Watershed Management Unit, a restricted area meant to protect the water supply for the city of Portland. Flowing north from its source in the western foothills of the Cascade Range, the creek passes a United States Geological Survey (USGS) stream gauge before receiving Nanny Creek from the left just before leaving Clackamas County and entering Multnomah County. Further downstream, it receives an unnamed tributary from the left before entering the Bull Run River. 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「Blazed Alder Creek」の詳細全文を読む スポンサード リンク
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