10341950 LITTLE TRUCKEE RIVER BELOW DIVERSION DAM, NEAR SIERRAVILLE, CA

LOCATION.-Lat 39°29'29", long 120°17'39", in SE 1/4 SE 1/4 sec.15, T.19 N., R.15 E., Sierra County, Hydrologic Unit 16050102, Tahoe 
  National Forest, on left bank 50 ft upstream from Independence Lake Road Bridge, 0.7 mi downstream from diversion dam, and 7.8 mi 
  southeast of Sierraville. 
DRAINAGE AREA.-36.1 mi2. 
PERIOD OF RECORD.-June 1993 to current year. 
  WATER TEMPERATURE: October 1993 to September 1994. 
GAGE.-Water-stage recorder. Elevation of gage is 6,380 ft above sea level, from topographic map. 
REMARKS.-Records fair including estimated daily discharge. Some water diverted to Sierra Valley about 0.7 mi upstream for irrigation in the 
  summer months. See schematic diagram of Truckee River Basin. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 3,980 ft3/s, Jan. 2, 1997, gage height, 12.50 ft from crest-stage gage; minimum 
  daily, 1.5 ft3/s, Aug. 17-19, 29, 1994. 

                  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       4.2      7.6       40    e1920      e99       56      173      267    240        4.8      2.6      3.7
  2       4.4      8.0       35    e2400      e96       54      147      260    212        5.6      2.7      3.7
  3       4.4      7.6       34    e1460      e92      e53      138      254    191        6.9      3.0      3.7
  4       4.1      7.3       36    e1160      e89      e53      132      298    353        6.8      3.3      3.2
  5       4.1      6.7      251     e860      e85      e53      116      331    243        6.1      4.0      3.1
  6       4.1      6.0      135     e560      e82       60      108      339    191        5.8      2.1      3.4
  7       4.1      6.0       81     e260      e78      e64      104      351    167        6.0      2.6      3.4
  8       4.1      6.1       82      254      e75      e66      102      371    162        6.4      3.4      3.1
  9       4.0      6.2      112      215      e71      e68       96      418    153        6.0      3.2      3.1
 10       4.0      6.4      107      194      e67      e70       83      474    135        5.5      4.7      3.2
 
 11       4.0      6.6      102      174      e64       65       75      491    120        5.0      5.0      3.2
 12       4.1      6.8      293      150      e60       65       72      494    106        4.3      3.2      3.2
 13       4.1      6.9      269      125       56       62       78      493    103        4.3      3.3      3.2
 14       4.2      7.0      199      130       55       66       93      465    119        4.7      3.2      3.2
 15       4.3      6.9      147     e125       53       76      112      493    128        4.9      3.0      4.6
 16       4.3      6.3      116     e120       53       86      145      452    110        4.6      3.2      4.2
 17       4.3     54         94     e116       58       86      206      429     99        4.2      3.3      3.8
 18       6.5    232         83     e111       56       85      269      430     89        4.5      3.3      3.9
 19       7.1    121         78      108       58      109      519      396     73        4.0      3.3      5.5
 20       5.5    110         66      105      e54      143      498      361     61        3.5      3.2      5.2
 
 21       5.2     78        e70      102      e53      154      556      296     58        3.4      2.7      4.4
 22       5.2    147        e70       89      e52      170      512      257     48        3.5      2.5      3.7
 23       5.4     84        e70      e90       51      191      644      286     29        3.4      2.8      2.5
 24       5.9     59        e70      e95       53      211      446      366     20        3.5      3.0      2.4
 25       8.6     49        e70     e100      e52      224      348      309     15        3.5      2.8      2.3
 26       7.3     41        e70     e103       50      258      349      264     12        3.2      2.7      2.8
 27       6.7     35        e70     e105       54      300      419      254      8.8      3.8      2.7      3.3
 28       6.8     33        e70      108       58      284      418      235      6.2      5.9      2.9      3.4
 29       7.7     30        e70      107      ---      250      331     e205      4.9      5.0      3.6      3.5
 30       7.7     29       e100      106      ---      237      298     e210      5.2      3.2      3.6      3.6
 31       7.4      ---      692     e103      ---      211      ---      250      ---      2.9      3.6      ---
 
TOTAL   163.8   1210.4     3782    11655     1824     3930     7587    10799   3262.1    145.2     98.5    105.5
MEAN     5.28     40.3      122      376     65.1      127      253      348      109     4.68     3.18     3.52
MAX       8.6      232      692     2400       99      300      644      494      353      6.9      5.0      5.5
MIN       4.0      6.0       34       89       50       53       72      205      4.9      2.9      2.1      2.3
AC-FT     325     2400     7500    23120     3620     7800    15050    21420     6470      288      195      209



STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1993 - 1997, BY WATER YEAR (WY)                                 

          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
MEAN     5.45     14.3     46.1      115     78.5      107      184      386      284     85.7     9.81     4.20
MAX      7.50     40.3      122      376      183      179      253      555      821      345     31.9     6.48
(WY)     1994     1997     1997     1997     1996     1995     1997     1996     1995     1995     1995     1993
MIN      2.52     4.58     5.50     8.14     8.94     26.9     90.1      100     16.5     4.63     2.22     2.04
(WY)     1995     1995     1995     1994     1994     1994     1994     1994     1994     1994     1994     1994

SUMMARY STATISTICS           FOR 1996 CALENDAR YEAR        FOR 1997 WATER YEAR           WATER YEARS 1993 - 1997
 
ANNUAL TOTAL                       44747.1                    44562.5                                           
ANNUAL MEAN                          122                        122                        111                  
HIGHEST ANNUAL MEAN                                                                        183              1995
LOWEST ANNUAL MEAN                                                                          23.5            1994
HIGHEST DAILY MEAN                  1700     May 16            2400     Jan  2            2400       Jan  2 1997
LOWEST DAILY MEAN                      2.3   Jul 21               2.1   Aug  6               1.5     Aug 17 1994
ANNUAL SEVEN-DAY MINIMUM               2.6   Jul 19               2.7   Aug 21               1.6     Aug 15 1994
INSTANTANEOUS PEAK FLOW                                        3980     Jan  2            3980       Jan  2 1997
INSTANTANEOUS PEAK STAGE                                         12.50  Jan  2              12.50    Jan  2 1997
ANNUAL RUNOFF (AC-FT)              88760                      88390                      80090                  
10 PERCENT EXCEEDS                   353                        318                        302                  
50 PERCENT EXCEEDS                    50                         60                         15                  
90 PERCENT EXCEEDS                     3.6                        3.3                        3.2                

    e Estimated.