10287700 TIOGA LAKE NEAR LEE VINING, CA
LOCATION.-Lat 37°55'41", long 119°15'01", in SE 1/4 SE 1/4 sec.19, T.1 N., R.25 E., Mono County,
Hydrologic Unit 18090101, Inyo National Forest, at left abutment of dam, on Glacier Creek, and 7.4 mi west of Lee
Vining.
DRAINAGE AREA.-3.67 mi2.
PERIOD OF RECORD.-October 1990 to current year. Unpublished records prior to October 1990 available in files of
Southern California Edison Co.
GAGE.-Water-stage recorder. Datum of gage is sea level (levels by Southern California Edison Co.).
REMARKS.-Reservoir is formed on natural lake by rock-fill dam completed in 1928. Usable capacity, 1,254 acre-ft,
between elevations 9,626.72 ft, invert of outlet, and 9,650.28 ft, crest of spillway. Figures given represent
usable contents. Water is used for power development downstream.
COOPERATION.-Records collected by Southern California Edison Co., under general supervision of the U.S.
Geological Survey, in connection with a Federal Energy Regulatory Commission project. Contents not rounded to
U.S. Geological Survey standards.
EXTREMES FOR PERIOD OF RECORD.-Maximum contents, 1,284 acre-ft, June 13, 1996, elevation, 9,650.68 ft; minimum,
88 acre-ft, several days in 1992, elevation, 9,628.95 ft.
EXTREMES FOR CURRENT YEAR.-Maximum contents, 1,269 acre-ft, July 15, 16, elevation, 9,650.48 ft; minimum, 118
acre-ft, Dec. 12, Feb. 9, Mar. 7, elevation, 9,629.68 ft.
Capacity table (elevation, in feet, and contents, in acre-feet)
(Based on survey by Southern California Edison Co., dated Aug. 19, 1981)
9,626.72 0 9,640 609
9,630 131 9,646 962
9,635 356 9,652 1,383
RESERVOIR STORAGE (ACRE-FEET), WATER YEAR OCTOBER 1998 TO SEPTEMBER 1999
DAILY OBSERVATION AT 2400 HOURS
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 1139 677 129 120 119 131 137 139 1115 1166 1246 1220
2 1138 656 128 120 119 124 137 139 1124 1175 1244 1217
3 1137 634 127 121 119 119 138 139 1097 1176 1242 1213
4 1134 613 126 119 119 119 136 140 1062 1175 1241 1210
5 1133 591 126 121 119 119 138 141 1030 1172 1240 1206
6 1130 571 126 119 119 120 139 147 1011 1170 1241 1202
7 1129 554 127 121 119 118 140 152 993 1172 1241 1198
8 1126 533 124 120 119 119 140 154 976 1182 1241 1195
9 1123 513 120 120 118 122 138 154 974 1190 1242 1191
10 1120 496 119 119 122 122 138 156 993 1200 1245 1187
11 1118 478 119 119 122 120 137 162 1024 1210 1245 1183
12 1115 460 118 119 123 121 136 177 1064 1218 1243 1179
13 1112 438 119 120 121 123 136 197 1118 1235 1241 1175
14 1109 417 121 119 123 123 136 211 1177 1258 1239 1171
15 1091 403 120 119 123 124 137 218 1213 1269 1237 1167
16 1062 388 119 120 123 123 137 228 1234 1269 1235 1163
17 1036 372 120 119 124 123 138 248 1249 1267 1232 1160
18 1008 356 121 119 123 123 140 275 1251 1265 1229 1164
19 982 318 121 119 124 124 140 303 1241 1263 1227 1162
20 956 268 123 119 124 125 142 334 1225 1262 1225 1160
21 931 225 123 119 126 127 143 372 1198 1261 1223 1157
22 907 189 123 119 128 129 142 427 1175 1260 1223 1155
23 882 163 123 119 130 130 143 502 1171 1259 1221 1153
24 860 149 123 120 131 131 140 563 1180 1257 1220 1151
25 836 141 123 119 131 130 140 639 1174 1257 1220 1148
26 813 134 123 119 130 132 141 708 1157 1256 1224 1144
27 791 131 125 119 132 130 141 780 1138 1254 1225 1141
28 766 130 122 119 133 133 140 881 1137 1253 1225 1137
29 744 130 122 120 --- 135 139 951 1146 1251 1225 1133
30 721 131 121 119 --- 128 139 1007 1155 1249 1223 1129
31 700 --- 121 119 --- 139 --- 1060 --- 1249 1222 ---
MAX 1139 677 129 121 133 139 143 1060 1251 1269 1246 1220
MIN 700 130 118 119 118 118 136 139 974 1166 1220 1129
a 9641.64 9629.99 9629.75 9629.70 9630.05 9630.19 9630.19 9647.50 9648.88 9650.20 9649.83 9648.51
b -438 -569 -10 -2 +14 +6 0 +921 +95 +94 -27 -93
CAL YR 1998 MAX 1265 MIN 118 b -1
WTR YR 1999 MAX 1269 MIN 118 b -9
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