10252550  CARUTHERS CREEK NEAR IVANPAH, CA

LOCATION.--Lat 35°14'33", long 115°17'58", in NW 1/4 NE 1/4 sec.6, T.13 N., R.16 E., San Bernardino County,
   Hydrologic Unit 15030102, on left bank 6.6 mi south of Ivanpah.

DRAINAGE AREA.--0.84 mi2, revised.

PERIOD OF RECORD.--October 1963 to September 1981, May 1982 to current year.

REVISED RECORDS.--WDR CA-82-1:  1979(M).

GAGE.--Water-stage recorder and crest-stage gage.  Elevation of gage is 5,640 ft above sea level, from
   topographic map.

REMARKS.--Records poor.  No regulation or diversion upstream from station.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 814 ft3/s, Aug. 12, 1979, gage height, 5.75 ft, from rating
   curve extended above 2.5 ft3/s on basis of slope-conveyance studies; no flow for most of each year.

EXTREMES FOR CURRENT YEAR.--Peak discharges greater than base discharge of 10 ft3/s, from rating curve extended
   above 2.5 ft3/s on basis of slope-conveyance studies, or maximum:

                       Discharge       Gage height                                  Discharge     Gage height
 Date       Time        (ft3/s)            (ft)             Date         Time        (ft3/s)          (ft)

Jul. 15    unknown      unknown            9.75


                  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       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  2       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  3       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  4       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
  5       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00

  6       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .46
  7       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .11
  8       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .07
  9       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 10       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00

 11       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 12       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 13       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 14       .00      .00      .00      .00      .00      .20      .00      .00      .00      .00      .00      .00
 15       .00      .00      .00      .00      .00      .04      .00      .00      .00    e1.0       .00      .00

 16       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 17       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 18       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 19       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 20       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00

 21       .00      .00      .00      .00      .29      .00      .00      .00      .00      .00      .00      .00
 22       .00      .00      .00      .00      .11      .00      .00      .00      .00      .00      .00      .00
 23       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 24       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 25       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00

 26       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 27       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 28       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 29       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
 30       .00      .00      .00      .00      ---      .00      .00      .00      .00      .00      .00      .00
 31       .00      ---      .00      .00      ---      .00      ---      .00      ---      .00      .00      ---

TOTAL    0.00     0.00     0.00     0.00     0.40     0.24     0.00     0.00     0.00     1.00     0.00     0.64
MEAN     .000     .000     .000     .000     .014     .008     .000     .000     .000     .032     .000     .021
MAX       .00      .00      .00      .00      .29      .20      .00      .00      .00      1.0      .00      .46
MIN       .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00      .00
AC-FT     .00      .00      .00      .00       .8       .5      .00      .00      .00      2.0      .00      1.3

  e Estimated.

                                               BRISTOL LAKE BASIN


                              10252550  CARUTHERS CREEK NEAR IVANPAH, CA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1964 - 1996, BY WATER YEAR (WY)

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

MEAN     .093     .034      .13      .20      .20      .33     .065     .001     .002      .15      .28     .021
MAX      2.81      .67     1.27     2.22     1.44     2.23      .95     .010     .054     2.45     2.70      .34
(WY)     1977     1966     1966     1993     1980     1992     1965     1983     1972     1984     1979     1976
MIN      .000     .000     .000     .000     .000     .000     .000     .000     .000     .000     .000     .000
(WY)     1965     1964     1964     1964     1964     1967     1964     1965     1964     1964     1964     1964

SUMMARY STATISTICS           FOR 1995 CALENDAR YEAR        FOR 1996 WATER YEAR           WATER YEARS 1964 - 1996

ANNUAL TOTAL                          71.29                       2.28
ANNUAL MEAN                             .20                        .006                       .12
HIGHEST ANNUAL MEAN                                                                           .36           1993
LOWEST ANNUAL MEAN                                                                            .001          1964
HIGHEST DAILY MEAN                    10     Jan 25               1.0   Jul 15              80       Aug 12 1979
LOWEST DAILY MEAN                       .00  Feb 27                .00  Oct  1                .00    Oct  1 1963
ANNUAL SEVEN-DAY MINIMUM                .00  Apr 28                .00  Oct  1                .00    Oct  1 1963
INSTANTANEOUS PEAK FLOW                                                                    814       Aug 12 1979
INSTANTANEOUS PEAK STAGE                                          9.75  Jul 15               9.75    Jul 15 1996
ANNUAL RUNOFF (AC-FT)                141                          4.5                       89
10 PERCENT EXCEEDS                      .34                        .00                        .07
50 PERCENT EXCEEDS                      .00                        .00                        .00
90 PERCENT EXCEEDS                      .00                        .00                        .00