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Water-Year Summary for Site 12422000

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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
12422000 SPOKANE RIVER BELOW N GREENE ST AT SPOKANE, WA
LOCATION - Lat 47°40'45", long 117°21'49" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.10, T.25 N., R.43 E., Spokane County, WA, Hydrologic Unit 17010305, downstream from Green Street Crossing, at Spokane, and at mile 78.
DRAINAGE AREA - 4,220 mi².
REVISIONS HISTORY - December 1948 to September 1952 and October 2017 to January 2021 published as "Spokane River below Green St at Spokane, WA". Station name revised to reflect location of gage.
SURFACE-WATER RECORDS
PERIOD OF RECORD - December 1948 to September 1952, October 2017 to current year.
GAGE -

Water-stage recorder. Datum of gage is 1,864.31 ft above mean sea level (levels by Bureau of Reclamation) and 1,867.84 ft above NAVD of 1988 (from GNSS Survey.

REMARKS - Flow regulated by power-plants of Avista Corp. at Post Falls, Idaho, 18.8 mi upstream and at City of Spokane's Upriver Dam, 1.7 mi upstream, and by Coeur d'Alene Lake, Idaho. In 1946, approximately 22,600 acres, of which about 15,000 acres utilized surface water, were under irrigation upstream from Spokane. Since 1966 irrigation has been from many wells in the valley near the river with only about 3,000 acres irrigated from the river. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 34,400 cfs May 16, 1949, gage height, 18.54 ft; minimum, 702 cfs Sept. 10, 1949, gage height, 4.09 ft.