Water-Data Report 2007 03499500 FORT LOUDOUN LAKE Upper Tennessee Basin Watts Bar Lake Subbasin LOCATION.--Lat 35°47′30″, long 84°14′35″ referenced to North American Datum of 1927, Loudon County, TN, Hydrologic Unit 06010201, at Fort Loudoun Dam on Tennessee River, 1 mi northeast of Lenoir City, and at mile 602.3. DRAINAGE AREA.--9,550 mi². SURFACE-WATER RECORDS PERIOD OF RECORD.--July 1943 to current year. GAGE.--Water-stage recorder. Datum of gage is sea level. COOPERATION.--Records furnished by Tennessee Valley Authority. REMARKS.--Reservoir formed by concrete dam with earth embankment. Spillway equipped with 14 radial gates, each 32 ft high by 40 ft wide. Closure of dam was made Aug. 2, 1943; water in reservoir first reached ordinary minimum pool elevation Sept. 4, 1943. Revised capacity table put into use Jan. 19, 1980. Total level pool capacity at elevation 815.00 ft, top of gates, is 424,000 cfs-days, of which 120,000 cfs-days is controlled flood storage above elevation 807.00 ft, minimum navigation pool. Reservoir is used for navigation, flood control, and power. Tellico-Fort Loudoun canal was opened Jan. 19, 1980. Canal is 1,000 ft long, and interconnects Tellico and Fort Loudoun Lakes at the dam. Spillway gates of Tellico Dam were closed Feb. 7, 1980, diverting all flow from Little Tennessee River. Monthend elevation and contents at 2400, for the water year are provided in the following table. MONTHEND ELEVATION AND CONTENTS AT 2400, WATER YEAR OCTOBER 2006 T O SEPTEMBER 2007 Contents (cfs- Change in DATE Elevation (feet) days) contents (cfs-days) Sept. 30... 812.40 178,800 Oct. 31... 812.23 177,400 -1,400 Nov. 30... 809.03 156,100 -21,300 Dec. 31... 808.85 153,900 -2,200 CALENDAR YEAR -500 Jan. 31... 808.95 154,700 +800 Feb. 28... 808.33 150,600 -4,100 Mar. 31... 808.50 151,600 +1,000 Apr. 30... 812.41 178,700 +27,100 May 31... 812.32 178,200 -500 June 30... 812.17 177,100 -1,100 July 31... 812.58 180,000 +2,900 Aug. 31... 812.31 179,000 -1,000 Sept. 30... 813.13 184,000 +5,000 WATER YEAR +5,200 EXTREMES FOR PERIOD OF RECORD.--Maximum elevation, 815.87 ft, May 7, 2003; minimum after first filling, 805.54 ft, Jan. 18, 1954. EXTREMES FOR CURRENT YEAR.--Maximum midnight contents, 187,200 cfs-days, May 20; maximum elevation, 813.65 ft, May 22; minimum midnight contents, 148,100 cfs-days, Dec. 15, minimum elevation, 807.91 ft, Feb. 16. Contents based on backwater profile. U.S. Department of the Interior U.S. Geological Survey .