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• • TABLE 11 (Continued) ~ Date Established/ Site Number Location Ins trumentaTion Periods of Operation Comments, Ett. A N SW-52W•CG1 South tributary of lower 1979; crest stage gage 06/79-11/83 Crest stage gage data unreliable due to Sege Creek at 7,160 ft- (D=VA) OS-11/84;03-11/85 debris obstructions in stream channel. elevation (SN88W14DDC) 03-05/86 Discontinued in 1986 due to change in mine plan. SW-52W-CG2 Mid-Watering Trough 1979; crest stage gage 08/80-11/82 Data limited. Discontinued in 1982 due to Gulch at 6,980 ft. (0=B8S) change in mine plan. elevation (SN88W20DAD) SW-S2W-FG1 Mouth of Hubberson Gulch 1979; flume gage, 07/79-present StiLtinB well float freezes and [haws in at 6,795 ft. elevation 2.5-ft throat width winter which is recorded on monitor, causing (SN88W16B CD) Pa rshall flume w/ a masking effect on baseline flow data. continuous level recorder. (D=VA) SW-52W-FG2 Lower Watering Trough 1979; flume gage, 08/80-11/85 Stilling well float freezes and thews in Gulch at 6,920 ft. 0.75-ft throat width 04/87-11/87 winter which is recorded on monitor, causing eleveti on (SN88W20ACD) Pa rshall flume w/ 04/88-11/88 a masking effect on baseline flow data. continuous level 04/89-present recorder. (O=VA) SW-52W-FG3 Middle of reach on Sage 1981; flume gage 04/81-09/83 U.S. Geological Survey discontinued monitoring Creek at 7,220 ft. 2.5-ft throat width in et site in 1983. elevation (SN87W18CDD) Pe rshall flume with continuous recorder (O=YA) SW-52W-FG4 Lower Sage Creek at 1990; flume gage 09/90-present New site installed summer 1990 6,860 tt. elevation 3.0-ft throe[ width (SNB7W 11ACC) Pe rshall flume w/ continuous recorder (D=VA) SW-52W-FGS Upper Sage Creek et 1990; flume gage 2.5-ft 09/90-present xew site installed late summer 1990 7,385 ft elevation throat width Parshall (SN87W30B8) flume with continuous recorder (D=VA)