10339419  TRUCKEE RIVER ABOVE PROSSER CREEK, NEAR TRUCKEE, CA

LOCATION.--Lat 39°22'07", long 120°06'50", in SE 1/4 NW 1/4 sec.32, T.18 N., R.17 E., Nevada County, Hydrologic
   Unit 16050102, on right bank 0.2 mi upstream from Prosser Creek, and 4.5 mi northeast of Truckee.

DRAINAGE AREA.--644 mi2.

                                             WATER-DISCHARGE RECORDS

PERIOD OF RECORD.--October 1993 to current year.

GAGE.--Water-stage recorder.  Elevation of gage is 5,560 ft above sea level, from topographic map

REMARKS.--Records good.  Flow regulated by Lake Tahoe, Donner Lake, and Martis Creek Reservoir (station numbers
	10337000, 10338400, and 10339380).  See schematic diagram of Truckee River basin.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 6,620 ft3/s, May 18, 1996, gage height, 10.07 ft; minimum
   daily, 11 ft3/s, July 28, Aug. 11, 15, 19, 1994.


                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996
                                               DAILY MEAN VALUES

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

  1       114      132      166      262      229      425     1100     2200     1390      977      299      273
  2        97      131      170      227      225      421     1140     2320     1420      843      296      272
  3        94      127      248      214      229      434     1030     2220     1330      483      295      270
  4        91      124      310      206      627      487     1010     2120     1260      519      296      269
  5        92      126      324      199     1480      421     1020     2040     1350      512      295      270

  6        98      139      279      194      899      435     1050     2000     1330      455      294      271
  7        96      132      280      189      781      418     1110     2000     1330      345      292      271
  8        96      129      274      188      799      413     1230     1950     1450      342      290      270
  9        96      125      272      186      673      425     1320     1870     1380      303      289      285
 10        94      120      269      185      616      444     1160     1860     1110      251      289      324

 11        91      115      332      179      590      492     1100     1410      835      356      295      342
 12        97      111     1500      176      576      477     1070     1500      833      318      310      341
 13       143      108      536      173      575      446     1010     1580      828      350      329      342
 14       142      105      385      171      569      547     1020     1720      780      334      324      341
 15       141      103      314      182      557      735     1060     2060      746      326      306      342

 16       137      103      277      315      642      858     1370     3840      726      317      301      340
 17       134      102      248      363      798      895     1170     4450      704      310      300      333
 18       125      101      235      291      807      964     1190     4910      680      304      298      330
 19       102      100      220      280     1010     1020     1350     3930      593      299      297      327
 20        98       99      204      258     1010     1060     1320     3330      430      295      316      326

 21        90       99      197      257      790     1100     1250     3070      412      293      314      322
 22        89       98      190      267      696     1110     1230     3200      390      285      307      320
 23        89       97      184      256      637     1030     1270     2640      384      279      306      319
 24        88       96      174      241      586      979     1470     2490      356      289      292      318
 25        88       97      173      224      548      961     1790     2850      298      290      294      316

 26        88      161      167      255      513      936     2020     2960      747      301      282      315
 27        97      166      159      244      481      944     2080     2430     1220      307      276      314
 28       138      164      158      234      460     1070     1990     1930     1510      308      276      311
 29       137      163      156      238      440      983     1940     1630     1610      308      275      310
 30       135      164      237      237      ---      972     2070     1650     1380      304      274      306
 31       132      ---      359      234      ---      973      ---     1360      ---      301      273      ---

TOTAL    3349     3637     8997     7125    18843    22875    39940    75520    28812    11504     9180     9290
MEAN      108      121      290      230      650      738     1331     2436      960      371      296      310
MAX       143      166     1500      363     1480     1110     2080     4910     1610      977      329      342
MIN        88       96      156      171      225      413     1010     1360      298      251      273      269
AC-FT    6640     7210    17850    14130    37380    45370    79220   149800    57150    22820    18210    18430



                    10339419  TRUCKEE RIVER ABOVE PROSSER CREEK, NEAR TRUCKEE, CA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1994 - 1996, BY WATER YEAR (WY)

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

MEAN     77.8     72.1      133      181      324      509      697     1317      726      333      179      180
MAX       108      121      290      259      650      738     1331     2436     1144      587      296      310
(WY)     1996     1996     1996     1995     1996     1996     1996     1996     1995     1995     1996     1996
MIN      34.3     46.6     50.7     52.5     55.9      137      180      224     72.6     41.2     12.1     54.1
(WY)     1995     1994     1994     1994     1994     1994     1994     1994     1994     1994     1994     1994

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1994 - 1996

ANNUAL TOTAL                      173735                     239072
ANNUAL MEAN                          476                        653                        394
HIGHEST ANNUAL MEAN                                                                        653              1996
LOWEST ANNUAL MEAN                                                                          85.0            1994
HIGHEST DAILY MEAN                  2480     May  1            4910     May 18            4910       May 18 1996
LOWEST DAILY MEAN                     44     Jan  2              88     Oct 24              11       Jul 28 1994
ANNUAL SEVEN-DAY MINIMUM              51     Jan  1              90     Oct 21              12       Aug  9 1994
INSTANTANEOUS PEAK FLOW                                        6620     May 18            6620       May 18 1996
INSTANTANEOUS PEAK STAGE                                         10.07  May 18              10.07    May 18 1996
ANNUAL RUNOFF (AC-FT)             344600                     474200                     285600
10 PERCENT EXCEEDS                  1090                       1500                       1060
50 PERCENT EXCEEDS                   284                        318                        185
90 PERCENT EXCEEDS                   102                        118                         42

                    10339419  TRUCKEE RIVER ABOVE PROSSER CREEK, NEAR TRUCKEE, CA--Continued

                                              WATER-QUALITY RECORDS

PERIOD OF RECORD.--
  SPECIFIC CONDUCTANCE:  October 1994 to current year.
  WATER TEMPERATURE:  March 1993 to current year.

PERIOD OF DAILY RECORD.--
  SPECIFIC CONDUCTANCE:  October 1994 to current year.
  WATER TEMPERATURE:  March 1993 to current year.

INSTRUMENTATION.--Water-temperature recorder since March 1993.  Specific conductance recorder since October 1994.

REMARKS.--Water temperature and specific conductance are affected by regulation from Lake Tahoe and Donner Lake.
EXTREMES FOR PERIOD OF DAILY RECORD.--
  SPECIFIC CONDUCTANCE:  Maximum recorded, 333 micromhos, Nov. 1, 1994; minimum recorded, 43 micromhos,
   May 16, 1996.
  WATER TEMPERATURE:  Maximum recorded, 25.0°C, July 13, 15, 20, 1994; minimum recorded, 0.0°C, many days most
   years.

EXTREMES FOR CURRENT YEAR.--
  SPECIFIC CONDUCTANCE:  Maximum recorded, 193 micromhos, Oct. 12; minimum recorded 43 micromhos, May 16.
  WATER TEMPERATURE:  Maximum recorded, 24.0°C, July 24; minimum recorded, 0.0°C, several days during
   January - March.


         SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

DAY      MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN

           OCTOBER           NOVEMBER          DECEMBER          JANUARY           FEBRUARY           MARCH

  1      152     142       132     130       129     124       107      94       135     125       123     114
  2      160     145       133     131       127     123       112     107       140     128       129     116
  3      165     153       133     131       125     110       115     112       145     132       149     119
  4      171     154       134     131       110     100       118     114       137      64       146     116
  5      167     154       134     129       111     102       120     117        86      62       130     113

  6      164     149       130     127       121     108       121     119        97      80       124     112
  7      163     150       131     129       122     115       127     120       100      90       121     113
  8      161     150       133     130       120     115       129     121       104      95       125     116
  9      164     150       135     131       120     111       131     124       111      95       129     117
 10      167     151       136     133       119     113       131     125       106      95       129     118

 11      185     151       138     135       116      93       131     127        98      95       127     114
 12      193     153       139     136        93      49       132     125        98      96       122     113
 13      167     126       139     137       102      70       133     129        98      96       120     115
 14      166     126       142     138       105      97       136     131        99      96       120     104
 15      163     128       141     138       120     103       137     125       102      96       115     101

 16      159     128       142     139       114     105       132      91       102      91       116      99
 17      154     129       142     140       121     111       119      96        96      80       110      98
 18      154     128       144     140       122     114       123     110        96      81       114      98
 19      164     142       144     141       136     116       128     113       104      85       108      97
 20      150     142       145     141       139     128       128     116        89      80       105      94

 21      153     149       145     142       139     121       128     117        93      88       103      91
 22      153     150       146     143       139     125       130     119        95      91       106      92
 23      154     151       147     144       132     123       137     120       104      93       103      95
 24      156     152       147     145       140     124       129     117       102      97       105      95
 25      154     151       147     144       134     124       134     115       114     100       106      97

 26      155     153       145     123       137     125       131     122       116     105       110      97
 27      155     138       125     123       129     127       130     115       122     107       107      94
 28      138     127       125     123       147     129       135     121       121     111        98      91
 29      130     128       127     123       146     132       134     119       119     111        95      94
 30      131     128       130     124       144      95       133     121       ---     ---        95      94
 31      132     129       ---     ---        98      77       137     124       ---     ---        95      94

MONTH    193     126       147     123       147      49       137      91       145      62       149      91



                    10339419  TRUCKEE RIVER ABOVE PROSSER CREEK, NEAR TRUCKEE, CA--Continued

         SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

DAY      MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN

            APRIL              MAY               JUNE              JULY             AUGUST          SEPTEMBER

  1       96      87        80      74        81      72       107      92       116     113       121     116
  2       92      87        79      73        79      69       115      91       116     113       120     116
  3       91      90        80      74        78      68       113      91       116     113       121     117
  4       92      90        81      77        74      66       114      91       116     113       121     118
  5       91      89        81      78        76      66       115      90       117     113       122     116

  6       90      87        81      78        75      66       122      99       117     114       120     115
  7       89      85        81      77        75      65       120     100       119     114       120     116
  8       94      83        81      77        79      66       106      98       119     115       120     116
  9       89      81        82      78        80      72       112      97       119     115       119     116
 10       90      80        82      77        82      73       112      98       119     116       116     113

 11       93      88        80      70        87      72       106      99       119     114       114     112
 12       93      85        77      66        83      71       106      96       115     113       113     112
 13       95      91        78      65        83      70       104      87       115     112       113     111
 14       94      87        74      66        86      72       106     103       116     112       113     111
 15       93      87        70      54        86      76       108     105       118     114       113     110

 16       91      81        64      43        85      77       110     106       117     115       113     108
 17       93      87        65      58        85      77       111     107       117     114       113     111
 18       97      88        72      56        86      79       112     108       118     114       113     111
 19       97      91        77      71        97      80       112     108       117     114       114     111
 20       98      91        80      77        98      83       114     111       118     115       114     111

 21       98      91        81      78       106      79       115     112       119     114       114     111
 22      100      90        81      78       103      87       115     113       119     115       114     112
 23       98      87        81      78       106      87       115     113       119     115       115     111
 24       95      81        83      80       106      86       119     113       119     116       114     111
 25       85      80        84      80       106      88       118     115       120     116       114     112

 26       82      77        82      79       102      82       119     112       120     116       114     111
 27       81      77        83      79       107      91       116     112       120     116       114     111
 28       82      79        85      79       108      89       115     113       120     116       153     111
 29       83      79        82      77       106      93       115     112       120     116       113     110
 30       81      76        82      77       108      91       116     113       121     117       113     111
 31      ---     ---        82      76       ---     ---       116     114       121     117       ---     ---

MONTH    100      76        85      43       108      65       122      87       121     112       153     108



                    10339419  TRUCKEE RIVER ABOVE PROSSER CREEK, NEAR TRUCKEE, CA--Continued

                WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996

DAY      MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN       MAX     MIN

           OCTOBER           NOVEMBER          DECEMBER          JANUARY           FEBRUARY           MARCH

  1     14.5     8.5      10.5     7.0       8.5     6.5       3.5     1.5       5.5     2.0       5.5     1.5
  2     15.5     8.5       9.5     6.5       8.5     6.5       4.5     1.5       4.5      .5       6.0     2.0
  3     15.5     9.0       9.0     5.0       7.0     4.5       5.5     2.0       4.5     1.0       5.5     2.5
  4     13.5     8.0       8.0     3.5       8.5     7.0       4.5     2.0       4.5     1.0       4.0      .0
  5     12.5     6.5       8.5     5.0       9.0     8.0       5.5     3.0       2.5     1.0       2.5      .0
  6     12.5     7.0       9.0     5.0       9.0     7.0       5.5     3.0       4.0     2.0       4.0      .0
  7     14.5     8.5      10.0     5.5       9.0     7.0       5.0     2.0       4.5     2.0       5.5     2.0
  8     13.5     8.0      10.0     6.0       7.5     6.0       5.0     2.0       4.5     2.0       6.5     2.0
  9     13.5     7.0       9.5     7.5       8.0     5.5       5.5     2.5       5.0     2.0       7.0     3.0
 10     14.5     8.0       9.0     5.5       7.0     5.0       6.0     3.5       5.5     3.5       6.5     3.0

 11     13.5     8.5       9.5     5.0       7.0     6.5       5.0     2.0       5.5     3.0       5.0     3.0
 12     13.5     8.0      10.0     6.0       6.5     3.0       5.0     1.5       6.0     2.5       4.0     2.5
 13     13.0     7.5      10.0     6.0       4.0     2.5       5.0     2.0       6.0     2.5       5.0     2.5
 14     13.5     7.5       9.5     6.0       4.5     3.5       4.5     1.5       6.0     2.5       7.5     2.5
 15     14.0     8.5       9.5     5.5       3.5     1.5       4.5     3.5       6.0     2.5       7.5     3.0
 16     14.0     8.5      10.5     7.0       4.0     2.0       4.0     2.5       6.5     4.5       8.0     4.0
 17     14.0     8.5       9.5     6.0       3.0      .5       3.5     1.5       5.5     3.5       8.5     4.0
 18     14.5     9.0       9.5     6.0       4.5     2.0       2.5     1.0       5.5     3.5       9.0     4.5
 19     13.5     8.0       8.5     5.0       3.5     1.5       2.5      .5       3.5     2.0       9.0     4.5
 20     13.0     8.0       8.0     4.5       3.5     1.0       2.5      .5       3.0     1.0       9.0     4.5

 21     13.0     8.0       8.5     5.5       3.5      .0        .5      .0       2.0      .5       9.0     5.0
 22     10.0     5.5       6.5     3.5       2.5      .5       1.5      .0       2.5      .5       6.5     3.5
 23     10.0     5.0       7.5     3.5       3.5     1.0       1.0      .0       4.0      .0       6.5     3.0
 24      9.5     4.5       7.5     4.0       2.0      .0       1.0      .0       2.5      .5       7.0     3.0
 25      9.5     4.0       8.0     3.0       1.5      .0       1.5      .0       2.5      .5       6.0     3.5
 26     12.0     6.0       7.0     5.0       2.5      .0       2.0      .0       2.5      .0       8.0     3.0
 27     11.5     7.5       5.5     2.5       4.0     1.0       1.5      .0       3.0      .5       7.0     4.5
 28     12.0     8.5       7.0     4.0       3.5     1.5       2.5      .0       5.5     1.0       6.0     3.5
 29     12.0     8.5       7.5     4.5       4.5     3.5       4.0      .0       5.0     1.0       7.5     2.5
 30     11.5     8.0       7.5     4.5       5.5     4.5       3.5     1.5       ---     ---       8.5     4.0
 31     11.0     8.5       ---     ---       5.0     3.5       4.0     2.0       ---     ---       9.0     4.5

MONTH   15.5     4.0      10.5     2.5       9.0      .0       6.0      .0       6.5      .0       9.0      .0


            APRIL              MAY               JUNE              JULY             AUGUST          SEPTEMBER

  1      7.0     4.5      12.0     6.5      14.0     7.5      19.5    14.0      21.5    16.5      20.0    14.0
  2      8.0     4.0      11.0     6.5      14.5     8.5      19.5    13.5      21.0    15.5      20.0    14.0
  3      8.5     4.5      10.0     6.0      14.5     8.0      19.5    14.0      20.5    14.5      19.5    14.0
  4      9.0     4.5      10.0     5.0      14.5     8.0      18.5    13.0      20.5    14.0      18.5    14.5
  5     10.0     4.5      10.0     5.5      15.0     8.5      19.0    12.0      21.0    14.5      17.0    11.5
  6     10.0     5.0      10.5     5.5      15.5     9.0      20.0    13.0      20.0    15.0      17.5    12.0
  7     10.5     5.5      11.0     6.0      16.0     9.5      21.5    15.0      21.5    14.5      18.5    12.5
  8     10.5     5.5      10.0     6.0      16.0     9.5      21.0    15.5      22.0    15.5      19.0    13.0
  9     10.0     6.0      11.0     5.5      15.5     9.5      21.5    16.0      22.5    16.0      19.0    13.5
 10      9.0     5.0      11.5     6.0      15.0     9.0      22.0    14.5      21.5    16.5      19.0    14.5

 11      9.0     4.5      13.0     6.5      15.0     8.5      22.5    16.5      21.5    17.5      19.5    14.5
 12      8.0     4.5      13.0     6.5      16.5    10.0      21.0    17.5      20.5    17.5      18.5    14.5
 13      9.0     4.0      12.0     7.0      16.5     9.5      21.0    16.5      20.0    16.5      16.0    14.0
 14     10.0     5.0       9.0     7.5      16.5     9.5      21.5    17.0      22.5    17.0      17.5    13.0
 15      9.0     6.0       7.5     6.0      17.0    10.0      22.0    17.0      22.5    16.5      17.0    14.0
 16      7.0     5.0       7.0     4.5      17.0    10.5      21.0    15.5      21.5    16.5      16.5    12.5
 17      7.5     4.0       6.5     6.0      16.5    10.5      20.0    14.5      21.0    15.5      16.0    11.5
 18      8.0     3.5       7.5     5.5      15.5     8.5      20.0    14.5      20.0    14.5      16.0    11.5
 19      7.0     4.0       9.5     6.0      16.5    10.0      19.0    12.5      20.0    15.0      16.5    11.5
 20      7.0     3.5      11.0     7.5      17.0    11.0      21.5    14.0      20.0    14.0      17.5    12.0

 21      9.0     4.0      10.5     8.0      16.0    10.5      22.0    15.5      20.5    14.0      18.0    13.0
 22      9.0     5.5       9.0     7.0      16.5     9.5      23.0    16.5      21.5    15.0      17.5    13.0
 23     10.5     6.0       8.5     6.0      16.5    10.5      22.5    17.0      21.0    15.5      17.0    12.5
 24      8.5     6.0      10.5     6.5      15.0    11.0      24.0    17.0      21.5    16.5      17.0    12.0
 25     10.0     5.0      11.0     7.5      11.5     9.5      23.0    16.5      21.5    16.5      16.5    12.5
 26     10.5     5.5      12.0     8.0      12.5     9.5      22.5    16.5      21.0    16.5      16.5    12.5
 27     10.0     5.5       9.5     8.0      14.0    11.0      22.5    17.0      20.0    14.5      16.5    11.5
 28     10.0     6.0      11.0     7.0      16.0    11.5      21.0    18.0      20.5    14.0      17.0    12.0
 29     11.5     6.0      12.0     7.0      18.0    13.0      22.0    16.5      21.5    15.5      17.5    12.0
 30     11.5     6.5      12.5     7.0      19.5    14.0      22.5    17.0      21.0    15.5      17.5    13.5
 31      ---     ---      13.0     7.0       ---     ---      23.0    17.0      20.5    15.0       ---     ---

MONTH   11.5     3.5      13.0     4.5      19.5     7.5      24.0    12.0      22.5    14.0      20.0    11.5