Water-Data Report 2013 10292500 Bridgeport near Bridgeport, CA Walker Basin East Walker Subbasin

LOCATION.--Lat 38°19′30″, long 119°12′40″ referenced to North American Datum of 1927, in SE ¼ NE ¼ sec.34, T.6 N., R.25 E., Mono County, CA, Hydrologic Unit 16050301, in Toiyabe National Forest, at Bridgeport Dam on East , and 4.5 mi north of Bridgeport. DRAINAGE AREA.--358 mi².

SURFACE-WATER RECORDS PERIOD OF RECORD.--Mar. 1926 to current year. Month end contents only for some periods, published in WSP 1314. REVISED RECORDS.--WSP 1180: 1949. WSP 1927: Drainage area. GAGE.--Water-stage recorder. Datum of gage is 6,466.44 ft above National Geodetic Vertical Datum of 1929 (project datum). REMARKS.--Reservoir is formed by earthfill, rock-faced dam. Storage began Dec. 08, 1923. Dam completed in Nov. 1924. Capacity, 42,460 acre-ft between elevations 6,415 ft, approximate elevation of bottom of reservoir, and 6,461 ft. Crest of spillway is at elevation 6,460.75 ft; however, there are four siphons that become operative prior to reaching this spillway. Elevation of sill of outlet gate, 6,412 ft. No dead storage. Figures given herein represent total contents. Water is used for by Walker River Irrigation District. EXTREMES FOR PERIOD OF RECORD.--Maximum contents, 44,880 acre-ft, Jun. 16, 1974, elevation 6,460.78 ft; no usable contents at times in water years 1929, 1930, 1960, 1977, 1988, and 1989. EXTREMES FOR CURRENT YEAR.--Maximum contents, 18,440 acre-ft, Mar. 05, 06, elevation, 6449.80 ft; minimum contents, 5,470 acre-ft, Sep. 26, elevation, 6439.04 ft.

U.S. Department of the Interior Suggested citation: U.S. Geological Survey, 2014, Water-resources data for the United States, Water U.S. Geological Survey Year 2013: U.S. Geological Survey Water-Data Report WDR-US-2013, site 10292500, accessed at http://wdr.water.usgs.gov/wy2013/pdfs/10292500.2013.pdf Water-Data Report 2013 10292500 Bridgeport Reservoir near Bridgeport, CA—Continued

RESERVOIR STORAGE, ACRE FEET WATER YEAR OCTOBER 2012 TO SEPTEMBER 2013 DAILY OBSERVATION AT 2400 HOURS Day Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

1 10,240 8,500 10,110 13,090 15,040 18,010 17,700 16,440 14,800 12,780 9,670 6,610 2 10,120 8,530 10,540 13,160 15,110 18,200 17,660 16,380 14,760 12,790 9,560 6,500 3 10,020 8,550 10,790 13,210 15,200 18,300 17,610 16,300 14,740 12,810 9,450 6,410 4 9,900 8,570 10,980 13,280 15,280 18,400 17,560 16,260 14,660 12,820 9,330 6,390 5 9,790 8,590 11,080 13,360 15,370 18,420 17,460 16,230 14,580 12,770 9,210 6,350 6 9,680 8,620 11,230 13,430 15,470 18,300 17,390 16,170 14,520 12,660 9,090 6,330 7 9,600 8,630 11,340 13,490 15,570 18,320 17,210 16,150 14,460 12,530 8,990 6,300 8 9,520 8,680 11,430 13,580 15,660 18,330 17,200 16,120 14,390 12,430 8,900 6,230 9 9,430 8,680 11,490 13,650 15,720 18,300 17,130 16,060 14,350 12,340 8,760 6,170 10 9,420 8,680 11,580 13,720 15,820 18,280 17,060 15,950 14,350 12,270 8,600 6,100 11 9,450 8,700 11,720 13,760 15,880 18,260 17,060 15,840 14,360 12,200 8,420 6,060 12 9,440 8,710 11,730 13,830 15,990 18,230 17,060 15,740 14,390 12,130 8,220 6,000 13 9,430 8,760 11,800 13,850 16,070 18,200 17,030 15,660 14,260 12,060 8,020 6,020 14 9,430 8,790 11,840 13,920 16,150 18,160 16,980 15,600 14,200 11,960 7,840 6,020 15 9,420 8,900 11,930 13,980 16,260 18,160 16,890 15,550 14,090 11,860 7,650 5,990 16 9,430 8,920 12,020 14,000 16,360 18,070 16,820 15,520 13,960 11,720 7,480 5,990 17 9,340 9,040 12,090 14,060 16,490 18,040 16,710 15,470 13,870 11,590 7,380 5,950 18 9,290 9,050 12,180 14,120 16,630 18,010 16,660 15,430 13,750 11,470 7,250 5,870 19 9,230 9,130 12,200 14,170 16,790 17,970 16,600 15,400 13,540 11,310 7,220 5,830 20 9,210 9,220 12,230 14,210 16,890 17,970 16,600 15,350 13,420 11,170 7,140 5,770 21 9,080 9,280 12,320 14,270 17,000 17,950 16,580 15,310 13,300 11,000 7,120 5,720 22 9,030 9,330 12,420 14,320 17,090 17,920 16,540 15,140 13,190 10,870 7,090 5,680 23 8,950 9,360 12,500 14,390 17,210 17,900 16,540 15,090 13,120 10,700 7,060 5,660 24 8,860 9,410 12,560 14,450 17,320 17,890 16,550 15,040 13,090 10,570 7,020 5,660 25 8,770 9,460 12,640 14,520 17,440 17,900 16,540 15,060 13,040 10,450 7,020 5,610 26 8,710 9,520 12,710 14,600 17,560 17,850 16,500 14,980 12,980 10,320 6,950 5,580 27 8,630 9,570 12,750 14,690 17,660 17,850 16,460 14,970 12,930 10,190 6,940 5,560 28 8,570 9,680 12,830 14,740 17,830 17,800 16,440 14,940 12,860 10,080 6,900 5,540 29 8,490 9,840 12,900 14,800 --- 17,800 16,440 14,970 12,850 9,970 6,860 5,560 30 8,470 9,950 12,980 14,910 --- 17,800 16,420 14,950 12,820 9,870 6,790 5,520 31 8,490 --- 13,050 14,970 --- 17,770 --- 14,860 --- 9,750 6,730 --- Max 10,240 9,950 13,050 14,970 17,830 18,420 17,700 16,440 14,800 12,820 9,670 6,610 Min 8,470 8,500 10,110 13,090 15,040 17,770 16,420 14,860 12,820 9,750 6,730 5,520 Elevation, in feet above NGVD 1929 (project datum), at end of month. 6,442.40 6,443.77 6,446.31 6,447.66 6,449.45 6,449.41 6,448.60 6,447.59 6,446.14 6,443.59 6,440.56 6,439.10 Change in contents, in acre-feet. -1,860 +1,460 +3,100 +1,920 +2,860 -60 -1,350 -1,560 -2,040 -3,070 -3,020 -1,210

Calendar Year 2012 Water Year 2013 Max 41,090 18,420 Min 8,470 5,520 Change in contents, in acre-feet. -18,090 -4,830

— 2 — Water-Data Report 2013 10292500 Bridgeport Reservoir near Bridgeport, CA—Continued

20,000

18,000

16,000

14,000

12,000

10,000 OBSERVATION AT 2400 HOURS RESERVOIR STORAGE, ACRE FEET, ACRE STORAGE, RESERVOIR

8,000

6,000

4,000 O N D J F M A M J J A S 2012 2013

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