Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins
Click to hide state-specific text

Idaho Water Science Center  | Subscribe to Water Alerts  |  Threatened and Endangered Stations in Idaho
ice During winter months, stage and discharge may be affected by ice in the channel. Data values reported on these pages may be significantly higher or lower than the actual streamflow. Adjustments to the data will be done after detailed analyses. Ice affected values identified on graphs () may be viewed by choosing the table output format. If you have questions about these values, please contact the Idaho Water Data Maintainer.



Click to hidestation-specific text

LOCATION.--Lat 43° 34'51", long 111° 44'31" (NAD27), in NW1/4 NW1/4 sec.22, T.3 N., R.40 E., Bonneville County, Poplar quad., Hydrologic Unit 17040205, at control tower of Ririe Dam on Willow Creek, 3.4 mi southeast of Ririe, and at mile 20.5.

DRAINAGE AREA.--487 mi2, excluding area above Grays Lake outlet.

PERIOD OF RECORD.--January to September 1976, October 1977 to September 1978, October 1986 to September 2000 (discontinued).

GAGE.--Water-stage recorder. Datum of gage is NGVD of 1929 (levels by U.S. Army corps of Engineers).

REMARKS.--Reservoir is formed by rock-faced earthfill dam. Some storage began in July 1974. Usable storage for flood control and irrigation began in January 1976. Total capacity is 100,000 acre-ft between elevations 4,997.0 ft, invert of outlet conduit, and 5,118.7 ft. A conservation and sediment pool stores approximately 10,000 acre-ft below 5,023 ft. Release is controlled by two slide gates discharging into a 12-ft diameter outlet conduit; capacity 1,900 ft3/s. Spillway crest is at elevation 5,093 ft, controlled by two gates.

COOPERATION.--Capacity table furnished by U.S. Army Corps of Engineers.

EXTREMES FOR PERIOD OF RECORD.--Maximum contents, 82,200 acre-ft May 25, 26, 1993, May 18, 1997, elevation 5,113.90 ft; minimum contents, after storage began in January 1976, 500 acre-ft Sept. 30, 1976, elevation, 5,024.40 ft.


Available Parameters Period of Record
All 1 Available Parameters for this site
00054 Reservoir storage(Obs.,Obs.) 1976-01-06  2000-09-30

Graph w/ stats
Graph w/ meas
Graph w/ (up to 3) parms
Days  (365)

  -- or --
Begin date

End date

Summary of all available data for this site
Instantaneous-data availability statement
*** There are no data available on the Waterdata system for the time period specified,
    although data may be available in the files of the local USGS office operating the station.