11351950  PIT RIVER BELOW DIVERSION TO MUCK VALLEY POWERPLANT, NEAR BIEBER, CA

LOCATION.--Lat 41°00'55", long 121°09'13", in NE 1/4 SW 1/4 sec.27, T.37 N., R.7 E., Lassen County, Hydrologic
   Unit 18020003, on right bank 1.7 mi upstream from North Gulch, 2.2 mi upstream from Spring Gulch, and 7.4 mi
   south of Bieber.

DRAINAGE AREA.--2,475 mi2, excluding Goose Lake Basin.

PERIOD OF RECORD.--October 1994 to current year.

GAGE.--Acoustic velocity meter measures minimum bypass flow and water-stage recorder and Ogee weir for spillway.
	Elevation of gage is 4,120 ft above sea level, from topographic map.

REMARKS.--Flow at this station has two components which are combined for publication: low flow release (station
   11351946) and flow over Ogee weir (station 11351948).  Water is diverted upstream of weir through a tunnel to
   Collett Reservoir (station 11351600), for power generation.  During powerplant operation, the minimum release
   is 50 ft3/s.  See schematic diagram of Pit and McCloud River basins.

COOPERATION.--Records were provided by Malacha Hydro Limited Partnership, 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, 10,400 ft3/s, May 3, 1995; no flow many days during
   1995.


                  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        53       54       53      720      309     1810     1030      542   618        52      31         4.0
  2        53       54       53     1030      309     1820     1190      472   506        52      40         5.0
  3        43       54       53      829      309     1920     1370      414   446        52      39         6.0
  4        47       53       53      344      609     2140     1470      368   367        52      12        13
  5        53       53       53       54     2060     2820     1500      398   263        53       2.0      25

  6        52       53       53       53     4010     3430     1490      383   e88        53       2.0      41
  7        39       53       53       53     5030     3390     1400      331  e103        53       3.0      47
  8        36       53       53       53     5480     3200     1210      331    54        53       4.0      24
  9        45       54       53       53     5430     2960     1040      309    53        49       3.0      19
 10        40       54       53       54     4790     2900      946      203    53        29       2.0      13

 11        38       53       53       54     4010     2920      887       54    53        25       2.0      11
 12        34       54       52       55     3240     2880      887       53    53        20       2.0       9.0
 13        44       53      296       54     2490     2780      887       53    53        16       2.0      10
 14        44       53      289       53     1760     2470      829       53    53        11       2.0       9.0
 15        38       53      352       54     1180     2070      731       54    48         9.0     2.0       9.0

 16        49       53      709      237      911     1720      628       54    38         6.0     1.0       8.0
 17        47       54      488      887      786     1410      720      257    37         3.0     1.0       8.0
 18        45       54      323     1110      877     1230      852      462    25         5.0      .00      7.0
 19        43       54       54     1200     1890     1090      910      752     6.0      12       3.0      31
 20        31       53       53      853     3850     1010      946     1120    51        14       7.0      48

 21        34       53       53      455     6220      946      970     1340    53         8.0     8.0      29
 22        42       53       53      431     6810      853      958     1360    33         8.0    11        33
 23        36       53       53      303     6570      807      876     1390      .00      9.0     2.0      53
 24        42       54       53      212     5410      742      796     1310    12        10        .00     53
 25        52       53       53      229     4500      753      752     1190    29         9.0      .00     53

 26        41       54       53      e53     3600      720      678     1060    11         7.0     4.0      53
 27        44       54       53       54     2840      638      678     1210     3.0       8.0    19        53
 28        41       54       53      e70     2300      721      658     1150    27         8.0     6.0      53
 29        39       54       53      222     1990      853      619      958    33        20       3.0      49
 30        47       55       53      269      ---     1030      580      863    26       e16       2.0      39
 31        49      ---      181      309      ---     1010      ---      795      ---    e30       3.0       ---

TOTAL    1341     1606     3910    10407    89570    55043    28488    19289  3195.00    752.0   218.00    815.0
MEAN     43.3     53.5      126      336     3089     1776      950      622      106     24.3     7.03     27.2
MAX        53       55      709     1200     6810     3430     1500     1390      618       53       40       53
MIN        31       53       52       53      309      638      580       53      .00      3.0      .00      4.0
AC-FT    2660     3190     7760    20640   177700   109200    56510    38260     6340     1490      432     1620

  e Estimated.



            11351950  PIT RIVER BELOW DIVERSION TO MUCK VALLEY POWERPLANT, NEAR BIEBER, CA--Continued

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1995 - 1996, BY WATER YEAR (WY)

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

MEAN     32.4     51.9     90.0      991     2021     2546     1313     2151      283     35.2     5.13     26.9
MAX      43.3     53.5      126     1647     3089     3316     1677     3679      459     46.1     7.03     27.2
(WY)     1996     1996     1996     1995     1996     1995     1995     1995     1995     1995     1996     1996
MIN      21.5     50.3     54.0      336      916     1776      950      622      106     24.3     3.23     26.7
(WY)     1995     1995     1995     1996     1995     1996     1996     1996     1996     1996     1995     1995

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

ANNUAL TOTAL                      366827.00                  214634.00
ANNUAL MEAN                         1005                        586                        791
HIGHEST ANNUAL MEAN                                                                        997              1995
LOWEST ANNUAL MEAN                                                                         586              1996
HIGHEST DAILY MEAN                 10400     May  3            6810     Feb 22           10400       May  3 1995
LOWEST DAILY MEAN                       .00  Jul 27                .00  Jun 23                .00    Oct  1 1994
ANNUAL SEVEN-DAY MINIMUM                .00  Aug  3               1.4   Aug 12                .00    Aug  3 1995
ANNUAL RUNOFF (AC-FT)             727600                     425700                     573300
10 PERCENT EXCEEDS                  3340                       1730                       2490
50 PERCENT EXCEEDS                    54                         53                         54
90 PERCENT EXCEEDS                     8.2                        8.0                        6.0