10336780 TROUT CREEK NEAR TAHOE VALLEY, CA

LOCATION.-Lat 38°55'12", long 119°58'17", in NW 1/4 SE 1/4 sec.3, T.12 N., R.18 E., El Dorado County, Hydrologic Unit 16050101, on left 
  bank 5 ft upstream from Martin Avenue Bridge, 500 ft upstream from Heavenly Valley Creek, and 1.8 mi east of Tahoe Valley. 
DRAINAGE AREA.-36.7 mi2. 
PERIOD OF RECORD.-October 1960 to current year. 
  SPECIFIC CONDUCTANCE: March 1981 to September 1983. 
  WATER TEMPERATURE: October 1971 to June 1974, October 1977 to June 1978, March 1980 to September 1985, October 1987 to 
  September 1988. 
  SUSPENDED-SEDIMENT DISCHARGE: October 1971 to June 1974, October 1977 to June 1978, March 1980 to September 1985, October 
  1987 to September 1988. 
GAGE.-Water-stage recorder. Datum of gage is 6,241.57 ft above sea level. 
REMARKS.-Records good. Minor diversions for local water supply upstream from station. See schematic diagram of Truckee River Basin. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 535 ft3/s, Feb. 1, 1963, gage height, 11.14 ft, and Jan. 2, 1997, gage height, 
  9.33 ft, from rating curve extended above 250 ft3/s on basis of computation of peak flow (weir formula); minimum daily, 2.5 ft3/s, Sept. 7, 
1988. 
EXTREMES FOR CURRENT YEAR.-Peak discharges greater than base discharge of 100 ft3/s, or maximum: 
  			Discharge	Gage height			Discharge	Gage height
  	Date	Time	(ft3/s)	(ft)	Date	Time	(ft3/s)	(ft)
  	Nov. 18	0500	163	7.70	Jan. 2	1415	535	9.33
  	Dec. 5	1100	165	7.72	June 14	1100	229	8.21
  	Dec. 12	1330	119	7.19

                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997

                                               DAILY MEAN VALUES
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

  1       e23       21       27      350       66      e46       68       88      146       75      e40       23
  2        23       21      e27      501       64       45       67       88      142       71      e40       24
  3        22       21      e27      341       60      e44       65      e87      138       69      e39       27
  4        22       20      e35      254       58      e44       65      e89      150       68      e38       25
  5        22       20       96      197       58      e44       64      e94      145       66      e36       25

  6        21      e20       48      141      e58       44       62      e98      131       64       34       23
  7        21      e20       40      117       54       44       61     e101      121       63       33       23
  8        21      e20       40       99       55       45       61     e105      123       62       32       22
  9        20       21       36       93      e54       46       60     e108      129       61       31       22
 10        20       20       42       88       53       49       58      121      121       59       31       22

 11        20       21       50       83      e53       52       57      126      110       59       31       22
 12        20       21       96       79      e53      e50       57      131      105       58       30       22
 13        20       21       63       75      e53      e49       57      142      111       57       30       22
 14        20       20       49      e72      e52       49       59      155      176       57       29       21
 15        20       19       43      e69      e52       54       62      164      133       56       29       22

 16        20      e19       40       67      e51       57       65      173      118      e54       28       22
 17        20       68       38       63      e51       56       70      178      112      e54       28       21
 18        20       86       37       62      e51       57       74      182      109      e53       27       21
 19        21       48       35       61      e50       61       85      185      105      e52       27       21
 20        20       44       33       59       50       66       86      187      102      e52       27       21

 21        19       36      e35       58       50       66       93      178       99      e51       27       21
 22        20       47      e35       57       50       68       90      170       95      e50       27       21
 23        21       38      e35      e58       48       74       94      171       91      e49       26       20
 24        20       32      e35       58      e48       76       86      159       88      e48       26       20
 25        23       31      e35      e58      e48       75       85      141       86      e47       25       21

 26        20       29      e37      e60       48       78       88      133       83      e46       25       21
 27        20      e29      e40      e64       47       82       96      128       81      e45       24       21
 28        20       28       42      e68       45       81       97      131       78      e44       24       21
 29        20      e28       58      e68      ---       78       91      134       77      e43       24       21
 30        20      e27      102       67      ---       77       90      141       77      e42       24       20
 31        20      ---      107       66      ---       76      ---      147      ---      e41       24      ---

TOTAL     639      896     1463     3553     1480     1833     2213     4235     3382     1716      916      658
MEAN     20.6     29.9     47.2      115     52.9     59.1     73.8      137      113     55.4     29.5     21.9
MAX        23       86      107      501       66       82       97      187      176       75       40       27
MIN        19       19       27       57       45       44       57       87       77       41       24       20
AC-FT    1270     1780     2900     7050     2940     3640     4390     8400     6710     3400     1820     1310

    e Estimated.


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1961 - 1997, BY WATER YEAR (WY)                                 

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP

MEAN     17.0     19.6     21.2     24.9     25.3     30.1     43.8     79.0     92.2     48.8     23.9     17.1
MAX      37.6     61.1     64.0      115     68.7     85.0     81.9      184      286      188     88.7     49.6
(WY)     1983     1984     1984     1997     1986     1986     1982     1969     1983     1995     1983     1983
MIN      5.19     7.43     8.18     8.00     8.02     11.0     15.7     14.2     10.9     5.21     3.43     3.71
(WY)     1989     1978     1991     1991     1991     1977     1988     1988     1988     1988     1977     1977

SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1961 - 1997

ANNUAL TOTAL                       21656                      22984                                             
ANNUAL MEAN                           59.2                       63.0                       36.9                
HIGHEST ANNUAL MEAN                                                                         85.3            1983
LOWEST ANNUAL MEAN                                                                          10.2            1977
HIGHEST DAILY MEAN                   267     May 16             501     Jan  2             501       Jan  2 1997
LOWEST DAILY MEAN                     19     Jan  9              19     Oct 21               2.5     Sep  7 1988
ANNUAL SEVEN-DAY MINIMUM              19     Jan  8              20     Oct  9               3.0     Sep  9 1977
INSTANTANEOUS PEAK FLOW                                         535     Jan  2             535       Feb  1 1963
INSTANTANEOUS PEAK STAGE                                          9.33  Jan  2              11.14    Feb  1 1963
ANNUAL RUNOFF (AC-FT)              42950                      45590                      26750                  
10 PERCENT EXCEEDS                   129                        124                         83                  
50 PERCENT EXCEEDS                    41                         52                         22                  
90 PERCENT EXCEEDS                    20                         21                          8.7