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 Unpublished records prior to October 1990 available in files of Southern California 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, 1,276 acre-ft, July 23, elevation, 9,650.58 ft; minimum, 116 acre-ft, several days in 
  February and March, elevation, 9,629.62 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 1996 TO SEPTEMBER 1997

                                        DAILY OBSERVATION AT 2400 HOURS
 
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
  1       816      519      154      137      123      117      132      195     1066     1264     1262     1252
  2       802      510      142      194      122      117      132      218     1057     1262     1260     1254
  3       788      501      134      214      121      117      131      246     1061     1262     1260     1255
  4       774      492      126      192      121      116      129      281     1052     1262     1261     1254
  5       761      484      130      169      119      117      129      321     1022     1262     1261     1252
 
  6       747      475      129      155      119      116      128      366     1003     1262     1260     1251
  7       734      466      126      147      119      116      127      413      996     1262     1260     1250
  8       724      458      120      142      119      116      128      459      996     1262     1264     1248
  9       714      450      124      137      119      116      127      513     1007     1263     1263     1245
 10       704      442      132      134      119      116      127      576     1014     1264     1263     1242
 
 11       695      433      131      132      119      116      127      641     1019     1264     1263     1240
 12       685      426      129      132      118      116      126      708     1016     1263     1262     1236
 13       676      418      126      133      117      116      125      791     1002     1262     1262     1233
 14       666      410      123      131      117      116      125      880      997     1262     1260     1228
 15       655      404      121      130      117      117      126      944     1000     1262     1259     1225
 
 16       646      399      119      129      116      117      128      956     1017     1262     1259     1222
 17       634      408      118      128      118      117      132      947     1044     1262     1259     1218
 18       629      404      117      126      118      117      136      940     1077     1262     1258     1214
 19       621      400      117      125      118      117      139      928     1106     1262     1257     1211
 20       611      395      117      130      117      118      144      927     1131     1261     1256     1208
 
 21       602      392      127      129      117      118      152      936     1148     1262     1257     1203
 22       592      393      127      135      117      118      153      940     1155     1265     1257     1198
 23       582      387      132      135      118      119      153      934     1160     1276     1256     1193
 24       576      380      129      133      117      120      149      918     1174     1270     1255     1179
 25       569      373      126      137      117      121      146      901     1189     1266     1255     1162

 26       563      366      125      138      117      125      149      886     1210     1265     1254     1142
 27       553      326      127      133      118      127      159      897     1231     1263     1254     1122
 28       544      269      125      130      118      128      161      939     1251     1265     1254     1103
 29       541      220      128      127      ---      130      159      998     1262     1266     1254     1083
 30       536      178      129      125      ---      131      173     1038     1265     1265     1253     1064
 31       527      ---      126      124      ---      134      ---     1073      ---     1263     1252      ---
 
MAX       816      519      154      214      123      134      173     1073     1265     1276     1264     1255
MIN       527      178      117      124      116      116      125      195      996     1261     1252     1064
 a    9638.45  9631.09  9629.88  9629.82  9629.68  9630.07  9630.97  9647.69  9650.43  9650.40  9650.25  9647.55
 b       -301     -349      -52       -2       -6      +16      +39     +900     +192       -2      -11     -188

CAL YR 1996   MAX 1284  MIN 112  b  +11
WTR YR 1997   MAX 1276  MIN 116  b +236