Water-Data Report 2013 11363920 Iron Canyon Reservoir near Big Bend, CA Basin

LOCATION.--Lat 41°02′32″, long 121°58′55″ referenced to North American Datum of 1927, in SW ¼ SE ¼ sec.21, T.37 N., R.1 W., Shasta County, CA, Hydrologic Unit 18020003, Shasta National Forest, in control house on left bank 500 ft upstream from Iron Canyon Dam on Iron Canyon Creek, and 3.7 mi northwest of Big Bend. DRAINAGE AREA.--11.1 mi².

SURFACE-WATER RECORDS PERIOD OF RECORD.--December 1965 to current year (monthend contents only). GAGE.--Water-stage recorder. Datum of gage is NGVD of 1929 (levels by Pacific Gas and Electric Co.). Monthend contents based on capacity table dated May 17, 1965, provided by Pacific Gas and Electric Co. COOPERATION.--Record of contents collected by Pacific Gas and Electric Co., under general supervision of the U.S. Geological Survey, in connection with a Federal Energy Regulatory Commission project no. 2106. Contents not rounded to U.S. Geological Survey standards prior to water year 2003 and for water year 2012. REMARKS.--Reservoir is formed by a rock-fill dam completed in 1965. Usable capacity, 24,197 acre-ft, between elevations 2,525.00 ft, invert of sluice pipe, and 2,665.00 ft, crest of spillway. Dead storage, 44 acre-ft. Normal operating pool is from elevation 2,565.0 ft, capacity, 990 acre-ft, to 2,664.0 ft, capacity, 23,738 acre-ft. Water is diverted from Lake McCloud (station 11367740) through a tunnel to Iron Canyon Reservoir and then into the via James B. Black Powerplant (station 11363910). Figures given represent total contents. Water is used for power generation and recreation. See schematic diagram of Pit River and McCloud River Basins available from the Water Science Center. EXTREMES FOR PERIOD OF RECORD.--(at 2400 hours) Maximum contents, 23,539 acre-ft, May 16, 22, 1977, elevation, 2,663.60 ft; normal minimum since reservoir first filled, 2,860 acre-ft, May 23, 24, 29, June 2, 7, 9, 14, 23, 24, 1966, elevation, 2,590.00 ft. Contents reduced to 195 acre-ft, elevation, 2,540.00 ft, Feb. 10, 1971, when reservoir was drained for inspection. EXTREMES FOR CURRENT YEAR.--(at 2400 hours) Maximum contents, 22,737 acre-ft, Oct. 5, elevation, 2,661.97 ft; minimum, 6,247 acre-ft, Dec. 11, elevation, 2,612.36 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 11363920, accessed at http://wdr.water.usgs.gov/wy2013/pdfs/11363920.2013.pdf Water-Data Report 2013 11363920 Iron Canyon Reservoir near Big Bend, 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 21,100 18,800 12,000 11,800 19,600 11,800 10,700 21,600 21,300 21,800 18,800 17,200 2 22,000 19,200 15,500 11,000 18,300 11,600 10,600 --- 21,900 22,500 18,800 17,400 3 22,400 19,800 15,900 10,100 16,700 12,000 10,300 --- 21,300 22,000 18,900 16,800 4 22,500 20,400 13,800 10,700 16,200 11,800 10,100 --- 20,900 22,300 19,800 16,300 5 22,100 20,800 12,500 10,900 16,800 11,600 9,560 --- 20,500 21,900 19,400 16,600 6 21,800 21,100 12,100 11,300 17,000 11,300 9,720 --- 20,400 22,000 19,200 16,800 7 21,400 21,300 10,700 11,400 16,700 11,400 10,300 --- 21,400 21,800 19,200 16,800 8 21,800 21,200 8,830 10,800 16,400 11,200 10,300 --- 22,300 21,500 19,200 17,400 9 22,200 21,100 7,020 11,700 16,200 11,800 10,600 --- 22,100 21,300 19,400 17,500 10 22,300 21,200 6,250 12,700 15,900 12,200 10,900 --- 21,800 21,200 19,400 16,700 11 22,300 21,300 7,000 12,500 15,500 11,800 11,300 19,400 21,200 20,500 19,500 16,600 12 22,000 21,300 8,210 13,100 15,600 11,500 11,100 19,800 20,800 20,600 19,300 16,500 13 21,600 21,400 9,500 13,100 15,300 11,300 11,800 19,300 20,300 20,800 19,000 16,200 14 21,500 21,100 11,200 13,000 15,200 11,300 13,400 19,200 19,800 20,900 19,000 16,500 15 21,600 20,800 12,900 12,700 15,400 11,600 13,100 20,000 20,400 20,400 18,800 16,500 16 21,500 20,700 13,800 12,400 15,600 11,700 13,000 20,900 20,100 20,300 18,700 16,000 17 21,400 20,200 15,200 12,300 16,600 11,300 13,000 21,700 19,700 20,400 18,600 15,900 18 21,100 19,100 15,100 13,400 16,900 11,400 12,300 21,700 20,200 20,900 18,500 15,700 19 21,400 18,400 14,700 14,400 16,600 11,400 13,600 21,800 21,300 21,000 18,400 15,200 20 21,700 17,900 14,200 15,500 16,000 11,900 15,300 20,800 21,700 20,600 18,000 14,700 21 21,800 17,200 13,800 15,700 15,400 12,800 16,700 20,600 21,300 20,500 17,900 15,200 22 21,800 16,800 13,100 15,200 14,800 12,900 16,500 20,600 21,100 19,900 17,800 15,300 23 21,800 17,000 11,400 13,900 14,900 12,600 16,900 20,600 21,600 19,300 17,700 15,100 24 21,200 17,600 10,600 14,200 14,800 12,700 17,700 20,500 21,900 18,700 17,700 14,600 25 20,900 17,800 10,700 14,700 14,200 13,300 19,000 20,800 21,800 18,200 17,900 14,300 26 20,400 17,600 10,400 15,800 13,600 12,900 19,900 21,000 21,600 18,300 18,400 13,800 27 19,800 15,600 10,900 16,200 13,100 12,500 21,200 20,900 22,400 18,400 18,500 13,400 28 19,300 13,300 11,800 17,400 12,700 12,100 20,900 20,700 21,700 19,000 18,100 13,800 29 18,800 11,600 11,700 18,100 --- 11,800 20,800 20,900 21,600 19,000 17,900 13,900 30 18,400 11,200 12,200 18,900 --- 11,100 21,900 21,200 22,100 18,900 17,300 14,300 31 18,600 --- 12,600 19,000 --- 11,100 --- 21,700 --- 18,800 17,000 --- Max 22,500 21,400 15,900 19,000 19,600 13,300 21,900 --- 22,400 22,500 19,800 17,500 Min 18,400 11,200 6,250 10,100 12,700 11,100 9,560 --- 19,700 18,200 17,000 13,400

— 2 — Water-Data Report 2013 11363920 Iron Canyon Reservoir near Big Bend, CA—Continued

25,000

20,000

15,000 STORAGE, ACRE , FEET ACRE STORAGE, OBSERVATION AT 2400 HOURS RESERVOIR

10,000

5,000 O N D J F M A M J J A S 2012 2013

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