PROVISIONAL DATA SUBJECT TO REVISION

LOCATION.--Lat 44° 04'07", long 111° 14'29 (NAD83), in NW1/4 NE1/4 sec.34, 
   T.9 N., R.44 E., Fremont County, 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.--334 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.
   WDR ID-05-1: Drainage area. 

GAGE.--Water-stage recorder. 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.--
   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 discharge since 
   diversions began, 5,060 ft3/s June 5, 1997, gage height, 4.82 ft; 
   minimum, 77 ft3/s Sept. 13, 2001, gage height, 0.44 ft.

Current shift-adjusted rating in tab-separated format.
These are updated daily and can change often! If you use these ratings it is important that you update often so that you have the most current version.
What is a shift-adjusted rating?

Station operated in cooperation with Water District No.1.

Realtime Gage Height data is provided by U.S. Bureau of Reclamation telemetry.