Water-Data Report 2012 01323500 GREAT SACANDAGA LAKE AT CONKLINGVILLE, NY Upper Hudson Basin Sacandaga Subbasin LOCATION.--Lat 43°18′57″, long 73°55′39″ referenced to North American Datum of 1927, Saratoga County, NY, Hydrologic Unit 02020002, 800 ft upstream from right end of Conklingville Dam on Sacandaga River at Conklingville. DRAINAGE AREA.--1,044 mi². SURFACE-WATER RECORDS PERIOD OF RECORD.--January 1930 to current year. Prior to October 1969, published as "Sacandaga Reservoir at Conklingville". GAGE.--Water-stage recorder. Datum of gage is NGVD of 1929, adjustment of 1912. Prior to Apr. 23, 1930, nonrecording gage at same datum in outlet channel 800 ft downstream. COOPERATION.--Supplemental records provided by Board of Hudson River-Black River Regulating District. REMARKS.--Reservoir is formed by earth and concrete dam; storage began in March 1930; dam completed in 1930. Usable capacity for stream regulation, 29.920 bil ft³ between elevations 740.0 ft and 771.0 ft (spillway crest). Elevation of inverts of three Dow valves is 699.0 ft. Capacity of 7.800 bil ft³ below elevation 740.0 ft is considered dead storage, except for extraordinary emergencies or for necessary inspection of structures. Purpose of reservoir is to provide flood control and low-water stream regulation for sanitary improvement, navigation, and power, as required by the public welfare, including public health and safety. Area of water surface of reservoir filled to capacity, elevation 771.0 ft, is 41.7 mi². Satellite and telephone gage-height telemeter at station. EXTREMES FOR PERIOD OF RECORD.--Maximum elevation, 774.47 ft, May 1, 2011, contents, 41.824 bil ft³; minimum since first filling, 729.55 ft, Mar. 30, 1940, contents, 2.100 bil ft³. EXTREMES FOR CURRENT YEAR.--Maximum elevation, 768.31 ft, June 6, contents, 34.622 bil ft³; minimum, 748.54 ft, Mar. 7, contents, 14.646 bil ft³. Capacity table (including dead storage) (elevation, in feet, and contents in billions of cubic feet) 738 6.43 760 25.61 740 7.80 764 29.85 745 11.64 768 34.27 750 15.94 771 37.72 755 20.61 774 41.26 U.S. Department of the Interior Suggested citation: U.S. Geological Survey, 2013, Water-resources data for the United States, Water U.S. Geological Survey Year 2012: U.S. Geological Survey Water-Data Report WDR-US-2012, site 01323500, accessed at http://wdr.water.usgs.gov/wy2012/pdfs/01323500.2012.pdf Water-Data Report 2012 01323500 GREAT SACANDAGA LAKE AT CONKLINGVILLE, NY—Continued LAKE OR RESERVOIR WATER SURFACE ELEVATION ABOVE NGVD 1929, FEET WATER YEAR OCTOBER 2011 TO SEPTEMBER 2012 DAILY MEAN VALUES Day Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep 1 767.31 765.69 761.12 758.07 753.00 749.33 758.68 761.72 767.69 766.67 763.88 761.40 2 767.33 765.54 761.29 758.03 753.04 749.29 758.80 761.89 767.63 766.56 763.78 761.29 3 767.41 765.36 761.36 757.79 753.06 749.23 758.93 762.09 767.75 766.47 763.66 761.18 4 767.40 765.13 761.36 757.54 753.03 749.10 759.06 762.38 767.84 766.41 763.53 761.06 5 767.31 764.94 761.31 757.30 752.92 748.98 759.13 762.59 767.99 766.29 763.48 761.02 6 767.13 764.74 761.18 757.07 752.82 748.78 759.21 762.81 768.11 766.22 763.46 760.91 7 766.93 764.52 761.16 756.85 752.65 748.67 759.26 762.92 768.14 766.12 763.38 760.80 8 766.70 764.28 761.23 756.62 752.47 748.70 759.30 763.36 768.09 766.02 763.27 760.74 9 766.47 764.05 761.15 756.36 752.30 749.19 759.45 764.20 767.99 765.91 763.18 760.64 10 766.23 763.82 761.08 756.12 752.06 749.68 759.35 764.79 767.87 765.82 763.14 760.53 11 765.96 763.62 760.92 755.84 751.82 749.97 759.35 765.11 767.74 765.71 763.12 760.43 12 765.69 763.37 760.73 755.62 751.57 750.20 759.30 765.37 767.64 765.60 763.23 760.31 13 765.45 763.08 760.54 755.43 751.29 750.59 759.34 765.55 767.74 765.50 763.22 760.20 14 765.40 762.84 760.34 755.20 750.98 751.29 759.32 765.72 767.74 765.38 763.15 760.12 15 765.82 762.71 760.19 754.89 750.70 751.94 759.32 765.96 767.73 765.28 763.10 760.04 16 766.19 762.53 760.17 754.57 750.41 752.66 759.36 766.36 767.66 765.20 763.02 759.90 17 766.48 762.37 760.01 754.30 750.15 753.37 759.43 766.61 767.59 765.12 762.96 759.77 18 766.69 762.23 759.86 754.09 749.97 754.03 759.37 766.75 767.50 765.02 762.85 759.75 19 766.73 761.98 759.70 753.80 749.87 754.69 759.41 766.81 767.49 764.93 762.74 759.87 20 766.81 761.78 759.51 753.55 749.78 755.33 759.44 766.86 767.46 764.83 762.66 759.87 21 766.87 761.53 759.32 753.27 749.70 755.88 759.43 766.96 767.40 764.75 762.58 759.83 22 766.88 761.30 759.25 752.99 749.65 756.34 759.45 767.11 767.32 764.65 762.47 759.78 23 766.80 761.23 759.18 752.70 749.62 756.70 759.76 767.24 767.24 764.55 762.37 759.75 24 766.70 761.21 759.07 752.48 749.61 757.01 760.30 767.40 767.19 764.56 762.25 759.67 25 766.57 761.09 758.93 752.27 749.68 757.32 760.63 767.52 767.14 764.44 762.14 759.58 26 766.39 760.96 758.79 752.03 749.59 757.58 760.86 767.55 767.09 764.34 762.02 759.51 27 766.28 760.87 758.58 752.04 749.50 757.82 761.14 767.55 767.03 764.30 761.91 759.39 28 766.26 760.81 758.70 752.51 749.44 758.01 761.30 767.57 766.93 764.22 761.86 759.32 29 766.14 760.76 758.56 752.78 749.33 758.21 761.43 767.63 766.87 764.16 761.75 759.27 30 766.02 760.93 758.35 752.85 --- 758.37 761.55 767.92 766.78 764.08 761.68 759.23 31 765.87 --- 758.21 752.95 --- 758.50 --- 767.89 --- 763.98 761.56 --- Mean 766.52 762.84 760.04 754.77 751.03 753.12 759.69 765.55 767.55 765.26 762.82 760.17 Max 767.41 765.69 761.36 758.07 753.06 758.50 761.55 767.92 768.14 766.67 763.88 761.40 Min 765.40 760.76 758.21 752.03 749.33 748.67 758.68 761.72 766.78 763.98 761.56 759.23 † 31.82 26.61 23.69 18.69 15.30 24.16 27.30 34.02 32.86 29.73 27.10 24.85 †† -631 -2,010 -1,090 -1,867 -1,353 +3,308 +1,211 +2,509 -448 -1,169 -982 -868 Calendar Year 2011 Water Year 2012 Mean 762.51 760.81 Max 774.40 768.14 Min 749.08 748.67 †† -25.9 -274 † Contents, in billions of cubic feet, at 2400 hours on last day of month. †† Change in contents, equivalent in cubic feet per second. — 2 — Water-Data Report 2012 01323500 GREAT SACANDAGA LAKE AT CONKLINGVILLE, NY—Continued 770 765 760 755 ABOVE NGVD 1929, FEET 750 MEAN LAKE OR RESERVOIR WATER SURFACE ELEVATION SURFACE WATER RESERVOIR OR LAKE MEAN 745 O N D J F M A M J J A S 2011 2012 — 3 — .