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LOCATION.--Lat 44° 04'07", long 111° l4'29, in NW1/4 NE1/4 sec.34,
T.9 N., R.44 E., Fremont County, Hydrologic Unit 17040203, 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.--326 mi2. Mean elevation, 7,520 ft.
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.
REVISED RECORDS.--WSP 1217: Drainage area. WSP 1317: 1908. WSP 1347: 1905.
GAGE.--Elevation of gage is 5,590 ft above NGVD of 1929, from topographic map.
Prior to Jan. 1, 1904, nonrecording gage at site 3 mi upstream at different
datum, Jan. 1, 1904 to Nov. 6, 1937, nonrecording gage at site 200 ft upstream
at different datum, and Nov. 7, 1937 to Oct. 7, 1948, nonrecording 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.--Maximum discharge (1905-93), 7,060 ft3/s
June 9, 1981, gage height, 5.93 ft; minimum observed, 72 ft3/s Jan. 17, 1930.
Maximum discharge since diversions to Marysville Hydropower plant (1994-2002),
5,060 ft3/s June 5, 1997, gage height, 4.82 ft; minimum, 77 ft3/s Sept. 13, 2001,
gage height, 0.44 ft.
Station operated in cooperation with Water District No.1.
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