USGS Water-Year Summary for Site 13047500

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	00060 Discharge(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

13047500 FALL RIVER NEAR SQUIRREL, ID

LOCATION - Lat 44°04'07", long 111°14'29" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 sec.34, T.9 N., R.44 E., Fremont County, ID, Hydrologic Unit 17040203, Porcupine Lake quad., on right bank 0.2 mi upstream from road bridge, 0.5 mi downstream from headgates of Marysville Canal, 4 mi northeast of Squirrel, 10.8 mi upstream from Conant Creek, and at mile 19.8.

DRAINAGE AREA - 329 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - August 1902 to June 1909 (gage heights only prior to October 1904), May 1918 to current year. Monthly discharge only for some periods, published in WSP 1317. Published as "Fall River at Wilson's Mill, near Marysville" 1902, as "Fall River near Marysville" 1903, as "Fall River at Fremont" 1904-09, and as "Fall River near Squirrel" 1918-59.

GAGE - Water stage recorder and crest stage gage. Datum of gage is 5,582.57 feet above NAVD (USGS). Prior to Jan. 1, 1904, non-recording gage at site 3 mi. upstream at different datum. Jan. 1, 1904 to Nov. 6, 1937, non-recording gage at site 200 ft. upstream at different datum, and Nov. 7, 1937 to Oct. 7, 1948, non-recording gage at site 100 ft. downstream at datum 0.29 ft. lower.

REMARKS - Flow since October 1939 regulated by Grassy Lake, capacity about 15,200 acre-feet. Diversions above station for irrigation of about 17,000 acres below station and in adjacent basins, and diversions from tributary upstream from station for irrigation of about 500 acres (1966 determination). Diversions to Marysville Canal were increased beginning August 1993 for power generation at Marysville Hydropower plant.

EXTREMES FOR PERIOD OF RECORD - UNREGULATED PERIOD (1905-93): Maximum discharge prior to diversions for Marysville Hydropower plant, 7,060 ft³/s June 9, 1981, gage height, 5.93 ft; minimum observed, 72 ft³/s Jan. 17, 1930. REGULATED PERIOD (1994 to current year): Maximum daily discharge since diversions began, 5,500 ft³/s June 8, 2011; minimum, 77 ft³/s Sept. 13, 2001, gage height, 0.44 ft.