Spokane River

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Spokane River
Spokane River basin

Spokane River basin

Data
Water code US1508606
location Idaho , Washington (USA)
River system Columbia River
Drain over Columbia River  → Pacific Ocean
origin Coeur d'Alene Lake
47 ° 40 ′ 41 ″  N , 117 ° 7 ′ 34 ″  W.
Source height 649  m
muzzle in the Columbia River dammed up to Franklin D. Roosevelt Lake coordinates: 47 ° 53 '38 "  N , 118 ° 20' 3"  W 47 ° 53 '38 "  N , 118 ° 20' 3"  W
Mouth height 391  m
Height difference 258 m
Bottom slope 1.4 ‰
length 180 km
Catchment area 15,590 km²
Discharge at Spokane
A Eo gauge: 11,106 km²
MQ 1892/2016
Mq 1892/2016
190 m³ / s
17.1 l / (s km²)
Outflow at the estuary level MQ
225 m³ / s
Left tributaries Hangman Creek
Right tributaries Little Spokane River
Reservoirs flowed through Long Lake , Nine Mile Reservoir
Big cities Spokane
Medium-sized cities Coeur d'Alene
Upper Spokane Falls

Upper Spokane Falls

Long Lake Dam on the Spokane River

Long Lake Dam on the Spokane River

The Spokane River is a left tributary of the Columbia River , approximately 180 km long, in northern Idaho and eastern Washington in the United States . It drains a medium-high mountain region east of the Columbia River and flows through the city of Spokane .

River course

The Spokane River forms the outlet of Coeur d'Alene Lake at its northern end in the Idaho Panhandle and reaches Franklin D. Roosevelt Lake after a flow distance of about 180 km .

Below Coeur d'Alene Lake, the river crosses the Rathdrum Prairie . He reaches Post Falls where he passes a dam and a 13 m high waterfall. It continues to flow in a westerly direction. There are five other dams along the river, four of them within the City of Spokane . In the center of Spokane he overcomes the Spokane Falls . He then takes on the tributaries of Hangman Creek (or Latah Creek ) and Little Spokane River . Further downstream, the Spokane River is dammed into Long Lake , a 24 km long reservoir. East of Miles it finally flows into Franklin D. Roosevelt Lake. Historic Fort Spokane is located at the confluence with the Columbia River.

pollution

The Spokane River is heavily polluted with heavy metals, which come from the Bunker Hill Mine and Smelting Complex and enter the river via the Coeur d'Alene River and Coeur d'Alene Lake.

Spokane's sewage treatment plants divert their water into the Spokane River.

Web links

Individual evidence

  1. a b Spokane River in the Geographic Names Information System of the United States Geological Survey
  2. USGS 12422500 SPOKANE RIVER AT SPOKANE, WA