10338000 TRUCKEE RIVER NEAR TRUCKEE, CA

LOCATION.-Lat 39°17'17", long 120°12'16", in SW 1/4 NE 1/4 sec.28, T.17 N., R.16 E., Placer County, Hydrologic Unit 16050102, Tahoe 
  National Forest, on left bank 1.4 mi downstream from Cabin Creek and 2.5 mi southwest of Truckee. 
DRAINAGE AREA.-553 mi2. 
PERIOD OF RECORD.-December 1944 to September 1961, June 1977 to September 1982, October 1992 to September 1995, October 1996 to 
  September 1997.   Monthly discharge only for some periods, published in WSP 1314.
  SPECIFIC CONDUCTANCE:  July 1977 to September 1982. 
  WATER TEMPERATURE: July 1977 to September 1982, March 1993 to September 1994.
REVISED RECORDS.-WDR CA-77-3:  Drainage area.
GAGE.-Water-stage recorder. Datum of gage is 5,857.66 ft above sea level. 
REMARKS.-Records good including estimated daily discharges. Flow regulated by Lake Tahoe (station 10337000), operating capacity, 
  744,600 acre-ft.   See schematic diagram of Truckee River Basin. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 11,900 ft3/s, Jan. 2, 1997, gage height, 9.97 ft, from rating curve extended above 
  3,100 ft3/s on basis of slope-area measurements at gage heights 7.62 ft and 7.92 ft; minimum daily, 3.4 ft3/s, several days in August 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       e47      317      146     8900     2780     2300      301      385      321      250      309      314
  2        61      317      131     8350     2760     2290      276      372      288      293      308      313
  3        60      317      123    e4320     2740     2270      261      382      274      313      307      313
  4        60      317      128    e3460     2720     2250      254      412      441      344      306      311
  5        60      317     e569    e3160     2700     2240      249      423      322      340      340      310

  6        59      320      273    e3000     2670     2230      244      423      276      338      331      310
  7        59      328      207    e2880     2640     2220      239      423      266      336      329      310
  8        60      331      219     2820     2630     2210      238      438      351      336      325      310
  9        60      332      236     2790     2620     2210      238      471      728      334      322      310
 10        61      338      257     2760     2600     2220      225      500      966      332      322      310

 11        60      340      367     2730     2580     2220      217      511      978      331      324      310
 12        60      340    e1550     2710     2560     2210      214      541      969      326      323      310
 13        60      340    e2200     2680     2540     2190      215      523      772      323      322      310
 14        59      340     2110     2680     2520     2180      235      494      945      320      320      309
 15        60      340     2030     2660     2510     2190      262      471     1080      318      319      309

 16        60      340     2000     2640     2500     2180      294      455     1280      317      319      306
 17        60      469     2020     2610     2500     2140      334      449     1280      314      319      306
 18        88      664     1990     2600     2480     1300      389      449     1260      314      319      308
 19       168      277     1700     2590     2470      422      663      433     1240      312      319      319
 20       195      244     1270     2590     2450      315      589      397     1020      310      317      319

 21       195      205     1750     2570     2450      325      726      347      671      311      319      319
 22       195      316     1980     2590     2430      341      604      326      504      314      318      319
 23       195      212     2100     2640     2410      367      666      325      359      317      315      319
 24       199      179     2180     2640     2390      386      523      310      345      318      315      319
 25       222      162     2160     2790     2360      379      458      277      259      315      315      320

 26       232      149     2190     2830     2350      397      457      267      253      315      315      313
 27       240      138     2260     2820     2350      422      527      276      158      315      315      300
 28       262      135     2220     2790     2320      402      507      302      177      313      315      297
 29       315      129     2450     2780      ---      368      438      317      229      313      315      294
 30       321      124     3050     2750      ---      349      407      336      248      311      315      234
 31       317      ---     4120     2760      ---      332      ---      342      ---      310      315      ---

TOTAL    4150     8677    45986    98890    71030    43855    11250    12377    18260     9853     9872     9251
MEAN      134      289     1483     3190     2537     1415      375      399      609      318      318      308
MAX       321      664     4120     8900     2780     2300      726      541     1280      344      340      320
MIN        47      124      123     2570     2320      315      214      267      158      250      306      234
AC-FT    8230    17210    91210   196100   140900    86990    22310    24550    36220    19540    19580    18350

    e Estimated.


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1945 - 1997, BY WATER YEAR (WY)                                 

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

MEAN      198      208      292      355      346      309      380      548      438      292      280      255
MAX       387      551     1483     3190     2537     1421     1734     2403     1381      535      492      453
(WY)     1948     1951     1997     1997     1997     1952     1958     1958     1952     1953     1959     1954
MIN      7.27     11.3     14.2     8.82     12.3     58.1     98.3      122     34.5     6.40     3.56     4.72
(WY)     1995     1994     1994     1994     1994     1994     1994     1994     1994     1994     1994     1994

SUMMARY STATISTICS                            FOR 1997 WATER YEAR                        WATER YEARS 1945 - 1997

ANNUAL TOTAL                                   343451                                                           
ANNUAL MEAN                                       941                                      330                  
HIGHEST ANNUAL MEAN                                                                        941              1997
LOWEST ANNUAL MEAN                                                                          32.4            1994
HIGHEST DAILY MEAN                               8900      Jan  1                         8900       Jan  1 1997
LOWEST DAILY MEAN                                  47      Oct  1                            3.4     Aug 18 1994
ANNUAL SEVEN-DAY MINIMUM                           58      Oct  1                            3.4     Aug 22 1994
INSTANTANEOUS PEAK FLOW                         11900      Jan  2                        11900       Jan  2 1997
INSTANTANEOUS PEAK STAGE                            9.97   Jan  2                            9.97    Jan  2 1997
ANNUAL RUNOFF (AC-FT)                          681200                                   239300                  
10 PERCENT EXCEEDS                               2610                                      498                  
50 PERCENT EXCEEDS                                332                                      232                  
90 PERCENT EXCEEDS                                197                                       43