USGS Water-Year Summary for Site 14330000

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Water year 2024: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2024

14330000 ROGUE RIVER BELOW PROSPECT, OR

LOCATION - Lat 42°43'47", long 122°30'54" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.06, T.33 S., R.3 E., Jackson County, OR, Hydrologic Unit 17100307, on right bank, 600 ft downstream from Prospect No. 1 powerplant, 1.4 mi downstream from Mill Creek, 2.0 mi southwest of Prospect, 2.1 mi upstream from South Fork Rogue River and at mile 169.4.

DRAINAGE AREA - 379 mi².

REVISIONS HISTORY -

WSP 1518: 1914-23, 1924(M), 1925, 1928.

Revision: Annual maximum gage-height for water years 1986 to 1993 were revised on Nov. 13, 2023 based on further review of the annual peak gage-height record.

SURFACE-WATER RECORDS

PERIOD OF RECORD - August 1913 to September 1930, October 1968 to current year. Published as "below Prospect powerplant No. 1" October 1927 to September 1930.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 1,964.56 ft above NGVD of 1929 (PacifiCorp bench mark). Prior to Jan. 13, 1928, nonrecording gage at site 1,000 ft upstream at different datum, and concurrent nonrecording gage on headrace to obtain equivalent combined flow.

REMARKS - Fluctuations caused by powerplant 600 ft upstream from station. Small diversions for irrigation upstream from station.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge since at least 1890, 25,000 ft³/s Dec. 22, 1964, gage height, 12.4 ft, from floodmarks, from records for Rogue River above Prospect (station 14328000) and Rogue River below South Fork Rogue River, near Prospect (station 14335000) after adjusting for estimated intervening tributary inflow.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 12,200 ft³/s Jan. 1, 1997, gage height, 8.15 ft; minimum discharge, 166 ft³/s Sept. 29, 1992, result of regulation by upstream diversion gates.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: November 1976 to September 1981.

pH: November 1976 to September 1981.

WATER TEMPERATURE: October 1968 to current year.

DISSOLVED OXYGEN: October 1979 to September 1981.

SUSPENDED SEDIMENT DISCHARGE: November 1976 to April 1981 (October to April only, water year 1980, November to April only, water year 1981).

INSTRUMENTATION - Temperature probe and data logger.

REMARKS - WATER TEMPERATURE: During low flows and warm weather, water temperatures may be influenced by return flows from hydroelectric plant 600 ft upstream.

EXTREMES FOR PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: Maximum, 73 microsiemens Sept. 22, 1980; minimum recorded, 28 microsiemens Jan. 13, 1980, but may have been lower during period of missing record Jan. 14-17, 1980.

pH: Maximum recorded, 8.3 units Aug. 10, 1981, but may have been higher during period of no record July and August 1981; minimum, 7.0 units Nov. 30, 1976.

WATER TEMPERATURE: Maximum, 20.5°C July 20, 1979 (result of regulation); minimum, 0.0°C at times most years.

DISSOLVED OXYGEN: Maximum, 13.6 mg/L Dec. 8, 1980, Feb. 21, 1981; minimum, 7.2 mg/L June 21, 1980 (result of regulation).

SEDIMENT CONCENTRATION (water years 1977-79): Maximum daily mean, 1,270 mg/L (estimated) Jan. 11, 1979; minimum daily mean, 0 mg/L on many days each year; (period October 1979 to April 1981), maximum daily mean, 716 mg/L Oct. 25, 1979; minimum daily mean, 0 mg/L on several days in October and December 1979, Nov. 15-21, 28, Dec. 1, 1980, Jan. 19, 1981.

SEDIMENT DISCHARGE (water years 1977-79): Maximum daily, 17,790 tons Dec. 15, 1977; minimum daily, 0 ton on many days each year; (period October 1979 to April 1981), maximum daily, 5,570 tons Jan. 13, 1980; minimum daily, 0 ton on several days in October and December 1979, Nov. 15-21, 28, Dec. 1, 1980, Jan. 19, 1981.