10270900  BIRCH-MCGEE DIVERSION TO BISHOP CREEK POWERPLANT NO. 2, NEAR BISHOP, CA

LOCATION.--Lat 37°16'26", long 118°34'45", NW 1/4 NE 1/4 sec.9, T.8 S., R.31 E., Inyo County, Hydrologic Unit
   18090102, Inyo National Forest, in conduit 100 ft upstream from penstock to Bishop Creek Powerplant No. 2 and
   11.9 mi southwest of Bishop.

PERIOD OF RECORD.--October 1990 to current year.  Unpublished records prior to October 1990 available in files of
   Southern California Edison Co.

GAGE.--Acoustic-velocity meter.  Elevation of gage is 7,950 ft above sea level, from topographic map.

REMARKS.--Conduit diverts water from Birch Creek and discharges into penstock to Bishop Creek Powerplant No. 2.
   Birch Creek receives water from McGee Creek via McGee Creek Diversion (station 10268225).  See schematic
   diagram of Bishop Creek basin.

COOPERATION.--Records collected by Southern California Edison 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 daily discharge, 45 ft3/s, June 18, 1996; minimum daily, no flow
   Aug. 13-29, 1996.


                  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      e2.3     e2.8     e4.0     e4.0      5.5      5.0      4.9      4.9    14          38    29         9.4
  2      e2.3     e2.8     e4.0     e4.0      5.5      4.9      4.9      4.8    18          40    27        11
  3      e2.3     e2.8     e4.0     e4.0      5.3      4.8      4.8      4.7    22          37    25        10
  4      e2.3     e2.8     e4.0     e4.0      6.4      5.0      4.8      4.8    19          30    24         8.6
  5      e2.3     e2.8     e4.0     e4.0      6.4      5.0      4.9      4.8    10          31    21         9.8

  6      e2.3     e2.8     e4.0     e4.0      5.6      5.0      5.0      4.8      .99       38    20         7.4
  7      e2.3     e2.8     e4.0     e4.0      5.4      4.8      5.2      4.8     1.6        38    20         6.3
  8      e2.3     e2.8     e4.0     e4.5      5.4      4.8      5.3      4.9    16          36     8.7       5.1
  9      e2.8     e2.8     e4.0     e4.5      5.3      4.8      5.1      4.9    15          39     1.9       6.3
 10      e2.8     e2.8     e4.0     e4.6      5.3      4.8      4.9      5.0     6.6       e35     1.9       6.5

 11      e3.0     e3.0     e4.0     e4.6      5.3      4.8      4.7      5.2    18         e14     1.9       6.6
 12      e3.0     e3.1     e4.0     e4.3      5.2      4.9      4.7      5.7    13         e36     1.5       7.9
 13      e3.0     e3.5     e4.0     e4.3      5.2      5.0      4.6      6.0   e25         e35      .00      6.1
 14      e3.0     e3.8     e4.0     e4.0      5.2      4.7      4.8      6.7   e31         e37      .00      5.4
 15      e3.1     e4.0     e4.0     e4.0      5.1      4.8      4.8     13     e38         e35      .00      5.0

 16      e3.1     e4.0     e4.2     e4.0      5.1      4.9      4.8     18     e43          36      .00      4.1
 17      e3.1     e4.0     e4.3     e4.0      5.0      4.9      4.8     16     e43          25      .00      8.3
 18      e3.1     e4.0     e4.5     e4.0      5.2      5.0      4.7     16     e45          19      .00      6.4
 19      e3.2     e4.0     e4.5     e4.0      5.4      5.1      4.7     15     e43          26      .00      4.1
 20      e3.2     e4.0     e4.5     e4.3      5.2      5.1      4.6     14     e42          29      .00      4.1

 21      e3.2     e4.0     e4.5     e4.5      5.3      5.1      4.8     14     e43          28      .00      4.8
 22      e3.5     e4.0     e4.5     e4.8      5.1      4.9      4.8     14     e43          29      .00      4.3
 23      e3.9     e4.0     e4.5     e4.9      5.3      4.8      5.1     13     e43         e29      .00      4.4
 24      e4.0     e4.0     e4.5     e5.3      5.2      4.7      5.2     13     e43         e30      .00      3.2
 25      e2.8     e4.0     e4.5     e5.5      5.2      4.7      5.1     12     e43         e29      .00      2.9

 26      e2.8     e4.0     e4.2     e5.5      5.0      4.8      5.1     11      41         e30      .00      2.8
 27      e2.8     e4.0     e4.0      5.5      5.1      4.7      5.0     11      36         e31      .00      2.5
 28      e2.8     e4.0     e4.0      5.6      5.1      4.7      4.8     11      32         e29      .00      2.7
 29      e2.8     e4.0     e4.0      5.4      5.1      4.7      4.8     11      28         e30      .00      2.8
 30      e2.8     e4.0     e4.0      5.4      ---      4.7      4.9     12      34         e30     3.6       3.3
 31      e2.8      ---     e4.0      5.4      ---      4.8      ---     13        ---       31     9.5       ---

TOTAL    89.0    105.4    128.7    140.9    154.4    150.7    146.6    299.0   850.19      980   195.00    172.1
MEAN     2.87     3.51     4.15     4.55     5.32     4.86     4.89     9.65     28.3     31.6     6.29     5.74
MAX       4.0      4.0      4.5      5.6      6.4      5.1      5.3       18       45       40       29       11
MIN       2.3      2.8      4.0      4.0      5.0      4.7      4.6      4.7      .99       14      .00      2.5
AC-FT     177      209      255      279      306      299      291      593     1690     1940      387      341

  e Estimated.


          10270900  BIRCH-MCGEE DIVERSION TO BISHOP CREEK POWERPLANT NO. 2, NEAR BISHOP, CA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1991 - 1996, BY WATER YEAR (WY)

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

MEAN     5.46     5.02     4.54     4.53     4.98     5.02     5.61     6.97     14.9     18.5     10.3     8.14
MAX      9.95     10.9     8.71     8.60     10.9     10.8     11.5     9.65     28.3     31.7     23.5     19.7
(WY)     1994     1994     1994     1994     1994     1994     1994     1996     1996     1993     1993     1993
MIN      2.87     2.70     2.57     2.48     2.47     2.45     2.43     2.76     4.99     6.83     4.82     2.98
(WY)     1996     1995     1995     1995     1995     1995     1995     1995     1995     1995     1995     1995

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1991 - 1996

ANNUAL TOTAL                        1304.0                     3411.99
ANNUAL MEAN                            3.57                       9.32                       7.85
HIGHEST ANNUAL MEAN                                                                         11.2            1993
LOWEST ANNUAL MEAN                                                                           3.37           1995
HIGHEST DAILY MEAN                    12     Jul 10              45     Jun 18              45       Jun 18 1996
LOWEST DAILY MEAN                      1.3   May 30                .00  Aug 13                .00    Aug 13 1996
ANNUAL SEVEN-DAY MINIMUM               2.0   Mar 24                .00  Aug 13                .00    Aug 13 1996
ANNUAL RUNOFF (AC-FT)               2590                       6770                       5690
10 PERCENT EXCEEDS                     6.0                       30                         16
50 PERCENT EXCEEDS                     3.0                        4.8                        5.0
90 PERCENT EXCEEDS                     2.3                        2.8                        2.7