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TABLE 11 (Continued) Date Established/ Site Number Location Instrumentation Periods of Operation Comments. Etc. SN-52W-CG1 South tributary of lower 1979; crest stage gape 06/79.11/83 Crest stage gage data unreliable due to Sage Creek et 7,160 ft. (p=VA) 05.11/84;03-11/85 debris obstructions in stream channel. elevation (SN8BN14DDC) 03-05/86 Discontinued in 1986 due to change in mine plan. SN-S2w-CG2 Mid-Watering Trough 1979; crest stage gage 08/BO-11/82 Dete limited. Discontinued in 1982 due to Gulch at 6,980 ft. (p=BBS) change in mine plan. elevation (SN88w20DAD) Sw-52W-FG1 Mouth of Hubberson Gulch 1979; flume gage, 07/79-present Continuous discharge date (except in winter) at 6,795 ft. elevation 2.5-ft throat width Monthly/triennuel water quality. (SN88w 168[0) Pershall flume w/ continuous level N recorder. (g=VA) ~ SN-S2N-FG2 Lower Metering Trough 1979; flume gape, OB/80.11/85 Site is upstream of mining, Gulch et 6,920 ft. 0.75•ft throat width 04/87-10/93 Monitoring discontinued 10/93 elevation (SN88W20A CD) Pershall flume w/ continuous level recorder. (g=VA) SY-S2N-FG3 Middle of reach on Sege 1981; flume gage 04/81-09/83 U.S. Geological Survey discontinued monitoring Creek at 7,220 ft. 2.5-ft throat width in at site in 1983. elevation (SN87w18CDD) Pershall flume with continuous recorder (O=VA) Sw-S2w-FG4 Lower Sege Creek at 1990; flume gape 09/90-present Neu site installed late summer 1990 6,860 ft. elevation 3.0-ft throat width Continuous discharge date (except In winter). (SNB7w11ACC) Pershall flume w/ Monthly/triennuel water quality. continuous recorder (D=VA) SY-52w-FGB Upper Sege Creek et 1990; flume gage 2.5-ft 09/90-present New site installed late summer 1990 7,385 ft elevation throat width Pershall Continuous discharge data (except in winter). (SN87w30BB) flume with continuous Monthly/triennuel water quality. recorder (D=VA)