11470500 EEL RIVER BELOW SCOTT DAM, NEAR POTTER VALLEY, CA

LOCATION.-Lat 39°24'29", long 122°58'29", in SE 1/4 sec.15, T.18 N., R.10 W., Lake County, Hydrologic Unit 18010103, Mendocino National Forest, on left 
bank 0.4 mi upstream from Soda Creek, 0.7 mi downstream from Scott Dam, and 9.7 mi northeast of town of Potter Valley. 
DRAINAGE AREA.-290 mi2. 
PERIOD OF RECORD.-October 1922 to current year. Monthly discharge only for some periods, published in WSP 1315-B. Prior to October 1929, published as "South Eel 
River at Hullville," and October 1929 to September 1953, "at Hullville." 
  REVISED RECORDS.-WSP 1315-B: 1923(M), 1938(M). WSP 1395: Drainage area. 
GAGE.-Water-stage recorder. Elevation of gage is 1,740 ft above sea level, from topographic map. Prior to Dec. 15, 1930, at datum 3.00 ft higher. 
REMARKS.-Flow regulated by Lake Pillsbury (station 11470000) 0.7 mi upstream. No diversion upstream from station. See schematic diagram of Eel River Basin. 
COOPERATION.-Records collected by Pacific Gas & Electric Co., under general supervision of the U.S. Geological Survey, in connection with a Federal Energy 
Regulatory Commission project. 
EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 56,300 ft3/s, Dec. 22, 1964, gage height, 24.24 ft, from floodmarks, from rating curve extended 
above 37,000 ft3/s; minimum daily, 0.1 ft3/s, Sept. 8, 1924. 

                  DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998

                                               DAILY MEAN VALUES
 
DAY       OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
 
  1       263      327      381      409     3320     1620     1910     1130     1390      331      146      195
  2       262      325      390      418     4120     1580     1290     1490     1380      306      146      193
  3       254      323      390      423    11300     1600      833     1460     1300      321      155      238
  4       247      321      390      437     6410     1530      848     1100      944      219      186      247
  5       252      319      391      435     5620     1450     1120     1140      678      180      187      161
 
  6       251      322      391      437     8510     1370     1210     1150      689      185      148      158
  7       250      328      399      440     8770     1280     1170      867     1070      185      154      171
  8       254      331      403      441     7810     1250     1180      564     1260      185      161      273
  9       260      329      403      443     4870     1180     1200      578      886      185      157      362
 10       258      328      403      446     3560     1120     1230      814      676      190      153      355
 
 11       263      326      403     1160     3250     1110     1270     1020      831      196      152      232
 12       269      323      403     6860     3130     1450     1270      995     1040      181      180      190
 13       268      322      402     5990     3500     3800     1310      968     1500      165      191      188
 14       268      217      407     5060     4160     2990     1320      807      856      160      186      284
 15       266      183      409     8660     4100     2390     1220      602      646      160      151      382
 
 16       265      186      413     6010     3260     2270     1080      535      537      160      150      375
 17       265      186      418     6900     3020     2200     1070      426      498      154      150      360
 18       114      282      419     7230     2590     1990     1020      382      428      141      150      241
 19        27      326      419     7200     4270     1820      972      386      430      140      155      168
 20        27      295      418     4340     4400     1710      800      389      420      143      161      174
 
 21        26      304      417     2970     6770     1720      641      392      410      143      161      286
 22        26      322      417     2190     6100     4670      587      261      411      143      161      380
 23        26      326      416     1850     4450     6090      559      151      404      143      159      375
 24        27      330      414     1760     3830     6580      611      137      407      142      159      345
 25        26      333      414     1580     2890     4860      973      141      414      142      159      251
 
 26        26      340      413     4950     2310     3610     1330      135      406      142      158      165
 27        55      344      412     6670     1960     2800     1200      363      395      142      159      177
 28        63      358      411     4040     1760     2370     1120      957      393      142      159      278
 29        46      380      410     4200      ---     2060     1130     2880      417      142      159      362
 30        51      339      409     3680      ---     1810     1130     2110      397      144      159      357
 31       206      ---      409     2890      ---     1820      ---     1490      ---      146      172      ---
 
TOTAL    5161     9275    12594   100519   130040    74100    32604    25820    21513     5458     4984     7923
MEAN      166      309      406     3243     4644     2390     1087      833      717      176      161      264
MAX       269      380      419     8660    11300     6580     1910     2880     1500      331      191      382
MIN        26      183      381      409     1760     1110      559      135      393      140      146      158
AC-FT   10240    18400    24980   199400   257900   147000    64670    51210    42670    10830     9890    15720
 


STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1923 - 1998, BY WATER YEAR (WY)                                 
 
          OCT      NOV      DEC      JAN      FEB      MAR      APR      MAY      JUN      JUL      AUG      SEP
MEAN      220      278      749     1317     1427     1063      669      336      201      178      180      211
MAX       361     1851     4945     5687     6625     4536     3357     1184      717      329      334      336
(WY)     1963     1974     1965     1970     1986     1983     1982     1983     1998     1959     1959     1996
MIN      19.1     13.3     27.6     35.8     7.28     11.8     15.4     34.4     50.3     64.5     65.0     34.4
(WY)     1978     1934     1960     1944     1977     1977     1977     1977     1977     1977     1977     1977
 
SUMMARY STATISTICS           FOR 1997 CALENDAR YEAR        FOR 1998 WATER YEAR           WATER YEARS 1923 - 1998
 
ANNUAL TOTAL                      204667                     429991                                             
ANNUAL MEAN                          561                       1178                        565                  
HIGHEST ANNUAL MEAN                                                                       1443              1983
LOWEST ANNUAL MEAN                                                                          85.4            1977
  HIGHEST DAILY MEAN                 30400     Jan  1           11300     Feb  3           45300       Dec 22 1964
  LOWEST DAILY MEAN                     26     Oct 21              26     Oct 21                .10    Sep  8 1924
  ANNUAL SEVEN-DAY MINIMUM              26     Oct 20              26     Oct 20                .43    Sep  6 1924
  INSTANTANEOUS PEAK FLOW                                       13800     Feb  3           56300       Dec 22 1964
  INSTANTANEOUS PEAK STAGE                                         12.93  Feb  3              24.24    Dec 22 1964
ANNUAL RUNOFF (AC-FT)             406000                     852900                     409500                  
10 PERCENT EXCEEDS                   818                       3580                       1130                  
50 PERCENT EXCEEDS                   191                        407                        234                  
90 PERCENT EXCEEDS                   123                        151                         91