1998 California Hydrologic Data Report
11447650 SACRAMENTO RIVER AT FREEPORT, CA
- 1998 WY
11447650 SACRAMENTO RIVER AT FREEPORT, CA
LOCATION.-Lat 38°27'15", long 121°29'54", in SW 1/4 SW 1/4 sec.13, T.7 N., R.4 E., Sacramento County, Hydrologic Unit 18020109, on left bank 630 ft
downstream from drawbridge at Freeport and 11 mi south of Sacramento.
DRAINAGE AREA.-Indeterminate.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.-January 1904 to July 1905 (gage heights only), June to November 1921, October 1948 to current year. Prior to October 1979, published as
Sacramento River at Sacramento (station 11447500).
REVISED RECORD.-WDR CA-96-4: 1994-1995 (P).
GAGE.-Water-stage recorder and acoustic-velocity system. Datum of gage is sea level.
REMARKS.-Records good. Natural flow of stream affected by storage reservoirs, power development, diversions for irrigation, return flow from irrigated areas, and
tide. Floodflows bypass station through Sacramento Weir Spill to Yolo Bypass (stations 11426000 and 11453000). See schematic diagram of lower Sacramento River
Basin.
EXTREMES FOR PERIOD OF RECORD (since 1949).-Maximum discharge, 117,000 ft3/s, Feb. 19, 1986, elevation, 25.00 ft; minimum daily, 3,970
ft3/s, Oct. 15, 1977.
EXTREMES OUTSIDE PERIOD OF RECORD.-Maximum discharge known prior to Nov. 21, 1950, 103,000 ft3/s, Jan. 17, 1909, elevation, 29.6 ft, site then in use
at present datum, from reports of California Department of Water Resources.
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 12900 10700 23700 14300 70000 73000 72300 45700 69000 37500 23700 26100
2 13900 10600 29400 14300 71900 71400 70900 46400 70500 36100 23800 26500
3 13900 10600 27400 15600 84300 70400 70600 47300 69000 34600 24000 26900
4 14100 10700 24000 18900 94100 69700 70800 48600 67100 33600 24400 27400
5 13900 10700 21800 25300 90300 68900 70100 49300 65500 32600 24300 28300
6 12800 11200 20200 28100 86100 69000 69400 49500 64600 32100 24400 28500
7 13600 11700 21000 26400 84300 68100 69000 49700 64100 31400 24600 28600
8 13100 11800 25500 23900 86800 66900 68800 48800 63500 29900 24300 28400
9 13500 11500 29400 24200 84000 65700 68600 46800 62600 29200 24700 27800
10 13200 11400 30700 24500 81400 64500 67900 44900 60400 28700 25100 27200
11 13700 11900 27700 25300 79600 62600 66900 44400 58400 28000 25400 28600
12 13600 11800 24300 34500 78100 59800 65100 44500 56600 26900 25000 27900
13 13200 11700 21500 53600 78000 56900 63200 46000 56300 26000 25100 26400
14 12600 12900 20000 58500 80300 54100 61600 49100 56700 25700 25500 24600
15 11700 13200 20800 63700 86700 52200 59500 50100 58200 25200 25400 23600
16 11000 14300 23800 71700 86100 51200 56700 49900 60300 24500 24900 23100
17 10800 14500 27500 73600 84700 49900 53900 49800 60600 24100 24500 23200
18 10900 14900 25900 77800 83000 47600 50600 51000 59200 23400 24500 24200
19 10500 15900 24100 79400 80900 47700 47400 51800 56300 23200 24900 24100
20 10700 16600 23900 77400 81000 50500 45800 50600 52400 23000 25300 24100
21 11300 17000 22800 75300 79100 51800 45000 48100 49800 23100 25800 23800
22 11900 17700 21100 73600 80700 54300 44100 45700 48800 22900 25800 23000
23 11800 17000 19000 71800 81100 58400 43900 43500 47700 22700 25800 23800
24 11700 16000 17800 70300 80000 64700 44900 42200 46300 22700 26000 23700
25 10600 15300 17000 68800 78300 72200 46700 42100 44800 23000 e26100 23600
26 9980 16200 16300 67800 77200 76400 47700 43000 42200 23200 e26200 23300
27 10000 20300 15900 67600 75900 77700 47500 45500 40700 23100 e26300 23300
28 10200 24900 15500 67700 74400 77900 48000 49100 40300 e23300 26400 23200
29 10400 26600 15000 69500 --- 76700 47400 52200 39800 e23500 26200 23000
30 10400 24200 14700 71200 --- 75100 46200 57000 39000 e23700 26000 23300
31 10400 --- 14600 70700 --- 73400 --- 63200 --- 23800 26100 ---
TOTAL 372280 443800 682300 1605300 2278300 1978700 1730500 1495800 1670700 830700 780500 759500
MEAN 12010 14790 22010 51780 81370 63830 57680 48250 55690 26800 25180 25320
MAX 14100 26600 30700 79400 94100 77900 72300 63200 70500 37500 26400 28600
MIN 9980 10600 14600 14300 70000 47600 43900 42100 39000 22700 23700 23000
AC-FT 738400 880300 1353000 3184000 4519000 3925000 3432000 2967000 3314000 1648000 1548000 1506000
e Estimated.
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1949 - 1998, BY WATER YEAR (WY)
OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
MEAN 12410 16380 26480 35400 40940 37790 30150 25110 18470 14830 14440 14900
MAX 28690 48820 74510 87110 81370 78290 76580 69820 55690 31000 25180 25320
(WY) 1963 1984 1984 1997 1998 1983 1982 1952 1998 1983 1998 1998
MIN 4494 6380 7208 8984 8003 6573 5961 6414 6865 6345 7061 6838
(WY) 1978 1993 1960 1991 1977 1977 1977 1992 1977 1949 1949 1977
SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1949 - 1998
ANNUAL TOTAL 9423850 14628380
ANNUAL MEAN 25820 40080 23860
HIGHEST ANNUAL MEAN 46900 1983
LOWEST ANNUAL MEAN 7608 1977
HIGHEST DAILY MEAN 113000 Jan 3 94100 Feb 4 115000 Feb 19 1986
LOWEST DAILY MEAN 9360 May 18 9980 Oct 26 3970 Oct 15 1977
ANNUAL SEVEN-DAY MINIMUM 9670 May 6 10300 Oct 25 4060 Oct 13 1977
INSTANTANEOUS PEAK FLOW 97900 Feb 4 117000 Feb 19 1986
INSTANTANEOUS PEAK STAGE 20.96 Feb 4 25.00 Feb 19 1986
ANNUAL RUNOFF (AC-FT) 18690000 29020000 17280000
10 PERCENT EXCEEDS 71700 73600 56700
50 PERCENT EXCEEDS 17000 28700 16000
90 PERCENT EXCEEDS 10800 13200 8890
11447650 SACRAMENTO RIVER AT FREEPORT, CA-Continued
WATER-QUALITY RECORDS
PERIOD OF RECORD.-Water year 1957 to current year.
CHEMICAL DATA: Water years 1959 to current year.
BIOLOGICAL DATA: Water years 1974-81.
SPECIFIC CONDUCTANCE: Water years 1974-75, 1989-94, 1995 to September 1998 (discontinued).
WATER TEMPERATURE: Water year 1960 to current year.
SEDIMENT DATA: Water year 1957 to current year (prior to water year 1980, published as 11447500 Sacramento River at Sacramento).
PERIOD OF DAILY RECORD.-
CHEMICAL DATA: June 1960 to June 1963.
SPECIFIC CONDUCTANCE: Water years 1974-75, 1989-94, October 1995 to September 1998 (discontinued).
WATER TEMPERATURE: June 1960 to current year.
SUSPENDED SEDIMENT: October 1956 to current year.
INSTRUMENTATION.-Temperature recorder June 1960 to November 1988. Water-quality monitor since November 1988.
REMARKS.-Records of sediment discharge from 1957 to 1979 were obtained at Sacramento and are considered equivalent. Additional specific-conductance and monthly
chemical and trace-element data are available in files of the U.S. Geological Survey. Interruption in record was due to malfunction of recording instrument.
EXTREMES FOR PERIOD OF DAILY RECORD.-
SPECIFIC CONDUCTANCE: Maximum recorded, 318 microsiemens, Nov. 22, 1974; minimum recorded, 32 microsiemens, Apr. 6, 1974.
WATER TEMPERATURE: Maximum recorded, 27.0C, Sept. 8, 1977; minimum recorded, 3.0C, Dec. 25-27, 1990.
SEDIMENT CONCENTRATION: Maximum daily mean, 1,960 mg/L, Dec. 24, 1964; minimum daily, 2 mg/L, Jan. 27, 31, and Nov. 21, 1991.
SEDIMENT LOAD: Maximum daily, 525,000 tons, Dec. 24, 1964; minimum daily, 35 tons, Jan. 31, 1991.
EXTREMES FOR CURRENT YEAR.-
SPECIFIC CONDUCTANCE: Maximum recorded, 203 microsiemens, Dec. 16; minimum recorded, 67 microsiemens, May 29.
WATER TEMPERATURE: Maximum recorded, 22.5C, on several days during July and August; minimum recorded, 7.0C, Dec. 25-29.
SEDIMENT CONCENTRATION: Maximum daily mean, 444 mg/L, Jan. 15, minimum daily mean, 9 mg/L, Oct. 17.
SEDIMENT LOAD: Maximum daily, 76,300 tons, Jan. 15; minimum daily, 251 tons, Oct. 17.
WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DIS- PH BARO- OXYGEN,
CHARGE, SPE- WATER METRIC DIS- MAGNE-
INST. CIFIC WHOLE PRES- SOLVED CALCIUM SIUM,
CUBIC CON- FIELD TEMPER- SURE OXYGEN, (PER- DIS- DIS-
FEET DUCT- (STAND- ATURE (MM DIS- CENT SOLVED SOLVED
DATE TIME PER ANCE ARD WATER OF SOLVED SATUR- (MG/L (MG/L
SECOND (US/CM) UNITS) (DEG C) HG) (MG/L) ATION) AS CA) AS MG)
(00061) (00095) (00400) (00010) (00025) (00300) (00301) (00915) (00925)
OCT
23... 1100 9250 126 7.9 16.6 761 10.2 105 10 5.3
NOV
20... 1130 13400 179 8.1 12.2 768 6.5 60 13 7.4
DEC
12... 1200 25000 155 7.5 9.3 774 10.4 91 12 6.8
JAN
15... 1030 63000 129 7.5 10.0 760 10.2 91 10 5.4
FEB
09... 1430 83400 77 7.3 9.3 766 10.9 94 7.0 3.3
MAR
19... 1100 47200 146 7.8 13.8 761 11.9 115 13 6.5
APR
07... 1030 69400 117 7.8 11.7 764 12.2 112 11 5.3
MAY
21... 1050 48600 100 7.8 14.6 764 10.2 100 8.9 4.2
JUN
09... 1030 63200 115 8.0 16.6 759 9.9 102 -- --
JUL
30... 1000 e23700 120 7.8 21.1 759 9.4 106 10 5.3
AUG
13... 1200 24200 119 7.7 21.4 763 14.2 160 9.6 5.1
SEP
15... 1030 25900 146 8.0 19.9 758 8.5 94 12 6.5
WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
ALKA- SOLIDS, SOLIDS,
POTAS- LINITY CHLO- FLUO- SILICA, RESIDUE SUM OF
SODIUM, SIUM, WAT.DIS SULFATE RIDE, RIDE, DIS- AT 180 CONSTI-
DIS- DIS- GRAN T. DIS- DIS- DIS- SOLVED DEG. C TUENTS,
SOLVED SOLVED FIELD SOLVED SOLVED SOLVED (MG/L DIS- DIS-
DATE (MG/L SODIUM (MG/L CACO3 (MG/L (MG/L (MG/L AS SOLVED SOLVED
AS NA) PERCENT AS K) (MG/L) AS SO4) AS CL) AS F) SIO2) (MG/L) (MG/L)
(00930) (00932) (00935) (29802) (00945) (00940) (00950) (00955) (70300) (70301)
OCT
23... 7.2 24 1.3 51 5.4 4.8 <.1 16 96 86
NOV
20... 11 26 1.8 57 7.6 6.5 <.1 19 104 111
DEC
12... 10 26 1.9 54 9.5 6.0 <.1 19 111 105
JAN
15... 6.9 23 1.4 47 5.4 6.5 <.1 16 82 83
FEB
09... 3.3 18 1.1 31 2.9 1.8 <.1 12 58 53
MAR
19... 6.8 20 1.1 55 7.9 5.9 <.1 17 98 96
APR
07... 5.3 19 .8 47 5.4 2.9 <.1 17 82 80
MAY
21... 4.5 19 .8 42 4.2 2.2 <.1 16 74 69
JUN
09... -- -- -- 49 -- -- -- -- -- --
JUL
30... 7.1 24 .9 57 5.5 3.0 <.1 17 88 82
AUG
13... 6.5 23 .9 46 4.9 2.7 <.1 16 76 77
SEP
15... 9.1 26 1.1 -- 5.5 4.1 <.1 17 97 95
NITRO- NITRO- NITRO- NITRO- NITRO- PHOS-
SOLIDS, GEN, GEN, GEN, GEN,AM- GEN,AM- PHOS- PHORUS ALUM-
DIS- NITRITE NO2+NO3 AMMONIA MONIA + MONIA + PHOS- PHORUS ORTHO, INUM,
SOLVED DIS- DIS- DIS- ORGANIC ORGANIC PHORUS DIS- DIS- DIS-
(TONS SOLVED SOLVED SOLVED TOTAL DIS. TOTAL SOLVED SOLVED SOLVED
DATE PER (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (MG/L (UG/L
AC-FT) AS N) AS N) AS N) AS N) AS N) AS P) AS P) AS P) AS AL)
(70303) (00613) (00631) (00608) (00625) (00623) (00665) (00666) (00671) (01106)
OCT
23... .13 <.01 .09 .02 <.2 <.2 .02 .01 .02 7
NOV
20... .14 <.01 .17 <.02 .3 .2 .06 .04 .03 5
DEC
12... .15 <.01 .20 <.02 .5 .2 .14 .03 .03 6
JAN
15... .11 .01 .26 <.02 .4 .2 .10 .03 .04 8
FEB
09... .08 <.01 .16 .03 .2 .1 .05 .02 .04 9
MAR
19... .13 <.01 .20 .03 .2 <.1 .06 <.01 .02 9
APR
07... .11 .01 .13 .03 .2 <.1 .07 .02 .02 8
MAY
21... .10 .01 .16 .05 .2 .2 .07 <.01 .01 8
JUN
09... -- .02 .12 .03 <.1 <.1 .03 <.01 .02 10
JUL
30... .12 <.01 .09 <.02 .2 .1 .05 .02 .03 7
AUG
13... .10 <.01 .08 .08 .2 <.1 .04 .02 .02 7
SEP
15... .13 .01 .11 .05 .2 .1 .06 .03 .03 5
WATER-QUALITY DATA, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
ANTI- BERYL- CHRO-
MONY, ARSENIC BARIUM, LIUM, CADMIUM MIUM, COBALT, COPPER, IRON, LEAD,
DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS-
SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED
DATE (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L
AS SB) AS AS) AS BA) AS BE) AS CD) AS CR) AS CO) AS CU) AS FE) AS PB)
(01095) (01000) (01005) (01010) (01025) (01030) (01035) (01040) (01046) (01049)
OCT
23... <1 1 19 <1 <1 <1 <1 1 19 <1
NOV
20... <1 <1 25 <1 <1 1 <1 1 24 <1
DEC
12... <1 1 24 <1 <1 1 <1 3 22 <1
JAN
15... <1 1 19 <1 <1 <1 <1 2 26 <1
FEB
09... <1 <1 12 <1 <1 <1 <1 2 24 <1
MAR
19... <1 <1 24 <1 <1 <1 <1 1 <10 <1
APR
07... <1 <1 19 <1 <1 <1 <1 2 11 <1
MAY
21... <1 1 16 <1 <1 <1 <1 2 11 <1
JUN
09... <1 <1 19 <1 <1 <1 <1 1 -- <1
JUL
30... <1 1 20 <1 <1 <1 <1 1 10 <1
AUG
13... <1 2 18 <1 <1 <1 <1 2 <10 <1
SEP
15... <1 1 23 <1 <1 1 <1 1 16 <1
CARBON,
MANGA- MOLYB- SELE- URANIUM CARBON, ORGANIC
NESE, DENUM, NICKEL, NIUM, SILVER, ZINC, NATURAL ORGANIC SUS-
DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- PENDED
SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED TOTAL
DATE (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (MG/L (MG/L
AS MN) AS MO) AS NI) AS SE) AS AG) AS ZN) AS U) AS C) AS C)
(01056) (01060) (01065) (01145) (01075) (01090) (22703) (00681) (00689)
OCT
23... 2 <1 3 <1 <1 2 <1 1.6 .2
NOV
20... 2 <1 1 <1 <1 <1 <1 2.3 .3
DEC
12... 3 <1 2 <1 <1 2 <1 3.7 .7
JAN
15... 5 <1 1 <1 <1 3 <1 3.1 1.3
FEB
09... 3 <1 <1 <1 <1 2 <1 .3 .5
MAR
19... 3 <1 <1 <1 <1 2 <1 1.3 .5
APR
07... 3 <1 <1 <1 <1 1 <1 1.6 .2
MAY
21... 1 <1 <1 <1 <1 <1 <1 1.6 .2
JUN
09... 2 <1 <1 <1 <1 <1 <1 1.3 .3
JUL
30... 2 <1 <1 <1 <1 1 <1 1.3 .4
AUG
13... 1 <1 <1 <1 <1 2 <1 1.5 .3
SEP
15... 1 <1 1 <1 <1 1 <1 2.0 .3
PARTICLE-SIZE DISTRIBUTION OF SUSPENDED SEDIMENT, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DIS- SEDI- SED.
CHARGE, MENT, SUSP.
INST. SEDI- DIS- SIEVE
CUBIC TEMPER- MENT, CHARGE, DIAM.
FEET ATURE SUS- SUS- % FINER
DATE TIME PER WATER PENDED PENDED THAN
SECOND (DEG C) (MG/L) (T/DAY) .062 MM
(00061) (00010) (80154) (80155) (70331)
OCT
16... 0950 13000 16.0 13 456 93
23...N 1100 9250 16.6 15 375 99
NOV
20...N 1130 13400 12.2 19 687 97
DEC
04... 1250 24000 10.5 116 7520 92
12...N 1200 25000 9.3 85 5740 95
JAN
08... 1003 24500 8.0 74 4900 92
15...N 1030 63000 10.0 368 62600 84
FEB
05...N 1230 91100 9.5 35 8610 91
09... 0942 84000 10.0 114 25900 54
09...N 1430 83400 9.3 79 17800 69
MAR
19... 1100 47200 13.8 91 11600 88
APR
07...N 1030 69400 11.7 44 8240 76
08... 1240 68800 12.0 58 10800 57
MAY
19... 0950 52000 14.0 107 15000 77
21...N 1050 48600 14.6 59 7740 80
JUN
09...N 1030 63200 16.6 49 8360 65
JUL
22... 0842 24700 21.0 40 2670 93
30...N 1000 e23700 21.1 40 2560 97
AUG
13...N 1200 24200 21.4 44 2870 85
20... 1121 27700 19.5 46 3440 85
SEP
15...N 1030 25900 19.9 46 3220 92
PARTICLE-SIZE DISTRIBUTION OF SURFACE BED MATERIAL, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DIS- BED BED BED BED BED BED BED BED
NUMBER CHARGE, MAT. MAT. MAT. MAT. MAT. MAT. MAT. MAT.
OF INST. SIEVE SIEVE SIEVE SIEVE SIEVE SIEVE SIEVE SIEVE
SAM- CUBIC TEMPER- DIAM. DIAM. DIAM. DIAM. DIAM. DIAM. DIAM. DIAM.
PLING FEET ATURE % FINER % FINER % FINER % FINER % FINER % FINER % FINER % FINER
DATE TIME POINTS PER WATER THAN THAN THAN THAN THAN THAN THAN THAN
(COUNT) SECOND (DEG C) .062 MM .125 MM .250 MM .500 MM 1.00 MM 2.00 MM 4.00 MM 8.00 MM
(00063) (00061) (00010) (80164) (80165) (80166) (80167) (80168) (80169) (80170) (80171)
DEC
04... 1320 1 25000 10.5 10 25 34 41 64 94 100 --
04... 1325 1 25000 10.5 3 11 14 51 94 99 100 --
04... 1330 1 25000 10.5 -- 1 2 17 70 97 100 --
04... 1335 1 25000 10.5 -- 1 12 74 98 99 100 --
04... 1340 1 25000 10.5 1 1 2 27 95 100 -- --
FEB
09... 1000 1 84000 10.0 -- -- 3 30 78 96 99 100
09... 1005 1 84000 10.0 -- -- 6 74 92 93 94 100
09... 1010 1 84000 10.0 -- -- 7 68 93 95 97 100
09... 1015 1 84000 10.0 -- -- 21 94 99 99 99 100
09... 1020 1 84000 10.0 -- 1 42 98 100 -- -- --
SPECIFIC CONDUCTANCE (MICROSIEMENS/CM AT 25 DEG.C), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
OCTOBER NOVEMBER DECEMBER JANUARY FEBRUARY MARCH
1 131 122 140 128 181 151 179 161 125 114 123 118
2 127 120 151 130 183 134 178 163 125 117 122 120
3 128 118 138 131 134 115 185 162 117 91 124 120
4 126 117 150 135 164 130 184 151 91 69 124 121
5 123 116 148 137 181 163 166 152 75 68 128 122
6 121 114 146 137 195 181 162 146 89 75 130 126
7 120 113 163 142 201 188 156 120 89 80 134 127
8 120 114 152 145 201 187 147 126 80 74 136 130
9 140 116 156 147 201 177 156 133 78 74 136 132
10 123 113 155 147 185 135 156 139 85 78 141 135
11 116 109 151 145 151 132 155 137 88 85 143 134
12 119 112 153 147 172 151 160 140 94 88 148 137
13 123 115 165 149 180 162 140 104 97 93 150 135
14 119 113 157 151 186 168 104 97 100 97 152 139
15 121 112 192 155 193 169 129 102 99 92 152 137
16 126 120 165 157 203 179 124 102 96 90 153 138
17 129 122 173 161 200 152 115 102 105 96 153 140
18 160 122 180 169 163 131 107 102 110 105 155 139
19 132 121 184 171 175 152 103 96 111 108 152 137
20 144 119 183 171 185 168 101 96 112 109 142 124
21 123 120 178 171 190 175 102 100 111 109 138 125
22 136 120 182 174 193 177 103 101 112 108 132 121
23 134 118 179 167 197 166 111 101 109 104 121 111
24 121 115 175 164 181 164 122 111 109 105 124 115
25 134 116 169 161 185 166 123 118 --- --- 122 112
26 133 110 172 160 183 164 127 121 112 108 113 96
27 126 119 179 161 185 165 127 122 115 111 96 90
28 173 122 190 170 187 164 131 123 119 115 93 89
29 154 137 175 134 180 164 133 127 --- --- 92 89
30 141 133 151 139 188 163 128 109 --- --- 96 92
31 136 128 --- --- 179 164 114 109 --- --- 98 96
MONTH 173 109 192 128 203 115 185 96 --- --- 155 89
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
APRIL MAY JUNE JULY AUGUST SEPTEMBER
1 104 97 122 112 90 79 104 95 118 112 131 127
2 111 104 114 107 112 90 106 96 119 114 130 125
3 117 107 111 104 118 111 106 99 124 118 131 124
4 117 108 109 101 118 113 106 99 121 116 130 123
5 116 108 106 100 120 112 107 101 122 117 127 122
6 118 113 106 99 120 112 109 100 123 117 128 122
7 128 115 105 99 121 114 110 100 125 118 125 119
8 133 126 106 100 123 114 111 100 123 117 125 120
9 134 126 106 100 121 112 110 104 121 115 129 122
10 133 124 108 103 118 109 109 101 118 114 133 127
11 134 130 107 101 118 109 109 102 120 114 134 122
12 136 132 106 98 115 109 113 107 121 116 132 125
13 136 129 100 94 116 108 116 104 122 116 141 129
14 136 130 100 95 111 100 122 109 122 117 149 137
15 135 130 102 99 106 100 124 108 120 117 151 140
16 135 130 102 95 104 97 129 113 123 114 153 142
17 134 126 102 96 102 96 129 108 122 113 152 139
18 138 128 103 96 105 98 124 111 124 120 148 134
19 139 130 103 98 108 100 128 116 124 119 143 125
20 139 128 103 98 108 101 128 117 124 119 135 126
21 139 128 102 98 109 102 127 119 124 119 137 127
22 138 128 102 94 108 101 128 118 125 121 129 105
23 133 125 99 92 107 99 129 116 127 123 127 103
24 132 124 96 87 106 97 123 115 128 124 125 113
25 128 118 90 84 107 99 124 112 127 123 126 111
26 124 116 87 76 110 101 127 119 125 120 123 111
27 122 116 79 71 110 102 126 116 127 120 120 109
28 126 114 74 69 108 98 126 114 130 122 116 108
29 128 120 74 67 105 97 126 114 129 121 117 110
30 127 122 74 71 105 95 121 114 130 124 116 108
31 --- --- 80 72 --- --- 118 112 132 126 --- ---
MONTH 139 97 122 67 123 79 129 95 132 112 153 103
TEMPERATURE, WATER (DEG. C), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
OCTOBER NOVEMBER DECEMBER JANUARY FEBRUARY MARCH
1 20.5 20.0 16.0 15.5 12.0 11.5 8.5 8.0 10.0 10.0 11.0 10.5
2 20.0 19.5 16.5 16.0 11.5 11.0 9.0 8.5 10.0 10.0 11.5 11.0
3 20.0 19.5 16.5 16.0 11.0 11.0 9.5 9.0 10.5 10.0 11.5 11.5
4 19.5 19.5 16.5 16.0 11.0 10.5 9.5 9.5 10.0 9.5 11.5 11.0
5 19.5 19.0 16.5 16.0 11.0 11.0 9.5 9.5 9.5 9.5 11.0 10.5
6 19.0 18.0 16.0 16.0 11.0 11.0 9.5 9.0 9.5 9.5 10.5 10.0
7 18.0 17.5 16.0 15.5 11.5 11.0 9.0 8.5 9.5 9.5 10.0 10.0
8 17.5 16.5 15.5 15.0 11.5 11.0 8.5 8.0 9.5 9.0 10.0 10.0
9 16.5 16.5 15.0 14.5 11.0 11.0 8.0 8.0 9.5 9.0 10.5 10.0
10 16.5 16.0 14.5 14.0 11.0 10.5 8.5 8.0 9.5 9.5 11.0 10.5
11 16.0 15.5 14.0 14.0 10.5 10.0 9.0 8.5 9.5 9.0 11.5 11.0
12 15.5 15.0 14.0 13.5 10.0 9.0 10.0 9.0 9.5 9.5 12.0 11.5
13 15.5 15.0 14.0 13.5 9.0 9.0 10.0 10.0 10.0 9.5 12.0 12.0
14 15.5 15.0 13.5 13.0 9.0 9.0 10.0 10.0 10.0 10.0 12.5 12.0
15 16.0 15.5 13.5 12.5 9.0 8.5 10.0 10.0 10.0 10.0 13.0 12.5
16 16.5 16.0 12.5 12.5 9.0 8.5 10.0 10.0 10.0 9.5 13.0 12.5
17 17.0 16.5 12.5 12.5 9.0 9.0 10.5 10.0 9.5 9.5 14.0 13.0
18 17.5 16.5 13.0 12.5 9.0 9.0 11.0 10.5 9.5 9.5 14.0 13.5
19 17.5 17.0 12.5 12.0 9.0 9.0 10.5 10.0 10.0 9.5 14.0 14.0
20 17.5 17.0 12.5 12.0 9.0 8.5 10.0 9.5 9.5 9.5 14.0 13.5
21 17.0 16.5 12.0 12.0 9.0 8.5 9.5 9.5 9.5 9.0 13.5 13.0
22 17.0 16.5 12.0 12.0 8.5 8.0 9.5 9.5 9.0 9.0 13.0 12.5
23 17.0 16.5 12.5 12.0 8.0 7.5 9.5 9.5 9.5 9.0 12.5 12.0
24 17.0 16.0 13.0 12.5 7.5 7.5 9.5 9.5 9.5 9.5 12.5 12.0
25 --- --- 13.0 13.0 7.5 7.0 9.5 9.5 --- --- 13.0 12.5
26 15.5 15.0 13.0 13.0 7.0 7.0 9.5 9.5 10.0 9.5 13.0 12.5
27 15.0 14.5 13.0 13.0 7.5 7.0 10.0 9.5 10.5 10.0 12.5 12.0
28 15.5 14.5 13.0 12.5 7.5 7.0 10.0 10.0 11.0 10.5 12.0 11.5
29 15.0 14.5 12.5 12.0 7.5 7.0 10.5 10.0 --- --- 12.0 11.5
30 15.0 14.5 12.5 12.0 8.0 7.5 10.5 10.0 --- --- 12.0 11.5
31 15.5 15.0 --- --- 8.0 8.0 10.5 10.0 --- --- 11.5 11.5
MONTH --- --- 16.5 12.0 12.0 7.0 11.0 8.0 --- --- 14.0 10.0
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
APRIL MAY JUNE JULY AUGUST SEPTEMBER
1 11.5 11.0 16.5 16.0 15.5 14.5 18.5 18.5 21.0 20.5 20.5 19.5
2 11.5 11.0 16.0 15.5 16.5 15.5 19.0 18.5 21.5 20.5 21.0 20.0
3 11.5 11.0 15.5 15.5 17.0 16.5 19.0 18.5 22.0 21.0 21.0 20.0
4 11.0 11.0 15.5 15.0 16.5 16.5 19.0 19.0 22.5 21.5 21.0 20.0
5 11.5 11.0 15.5 14.5 17.0 16.5 19.5 19.0 22.5 21.5 21.0 20.0
6 12.0 11.5 14.5 14.5 17.0 16.5 20.0 19.5 22.5 21.5 21.0 20.0
7 12.0 11.5 15.0 14.5 17.0 16.5 20.5 20.0 22.0 21.0 20.5 20.0
8 12.0 12.0 15.0 14.5 16.5 16.5 20.5 20.5 21.5 21.0 20.5 19.5
9 12.5 12.0 14.5 14.0 16.5 16.5 20.5 20.0 21.5 20.5 20.0 19.0
10 12.5 12.5 14.5 14.0 17.0 16.5 20.5 20.0 21.5 20.5 19.0 18.5
11 13.0 12.5 14.5 14.0 16.5 16.0 20.0 19.5 21.5 20.5 19.0 18.5
12 12.5 12.0 14.0 13.0 16.5 16.0 20.5 20.0 21.5 20.5 19.0 18.5
13 12.0 12.0 13.0 12.5 16.5 16.0 21.0 20.0 21.5 21.0 19.5 18.5
14 12.0 12.0 13.0 13.0 17.5 16.5 21.0 20.5 21.5 21.0 20.0 19.0
15 12.0 12.0 13.5 13.0 17.5 17.0 21.5 20.5 21.5 21.0 20.5 20.0
16 12.5 12.0 13.5 13.0 17.5 17.0 22.0 21.0 21.5 20.5 20.5 20.0
17 12.5 12.0 13.5 13.0 17.0 16.5 22.0 21.5 21.0 20.5 20.5 20.0
18 13.5 12.5 14.5 13.5 17.5 17.0 22.5 21.5 21.0 20.0 20.0 19.5
19 14.0 13.5 14.5 14.0 17.5 17.0 22.5 22.0 20.5 20.0 19.5 19.0
20 14.5 14.0 14.5 14.5 17.5 17.5 22.5 22.0 20.5 19.5 19.0 18.5
21 15.5 14.5 15.0 14.5 18.0 17.5 22.5 21.5 20.0 19.5 19.0 18.5
22 15.5 15.5 15.5 15.0 18.0 17.5 22.0 21.0 20.0 19.5 18.5 18.0
23 15.5 15.0 16.0 15.5 18.0 17.5 21.0 20.5 20.0 19.5 18.0 18.0
24 15.5 14.5 16.0 15.5 18.0 17.5 21.0 20.5 20.0 19.5 18.0 17.5
25 14.5 14.5 15.5 15.5 18.5 18.0 21.0 20.5 20.0 19.5 18.0 17.5
26 14.5 14.0 15.5 14.5 18.0 18.0 21.5 20.5 19.5 19.0 17.5 17.0
27 15.0 14.5 14.5 14.0 18.5 18.0 22.0 21.0 19.5 19.0 17.0 16.5
28 15.5 14.5 14.0 13.5 18.5 18.0 22.0 21.5 19.5 19.0 17.0 16.5
29 16.0 15.0 13.5 12.5 18.5 18.0 22.0 21.0 20.0 19.0 17.5 17.0
30 16.5 16.0 13.0 12.5 18.5 18.0 21.5 21.0 20.0 19.0 17.5 17.0
31 --- --- 14.5 13.0 --- --- 21.0 20.5 20.5 19.5 --- ---
MONTH 16.5 11.0 16.5 12.5 18.5 14.5 22.5 18.5 22.5 19.0 21.0 16.5
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
MEAN MEAN MEAN
MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT
DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE
DAY (CFS) (MG/L) (TONS/DAY) (CFS) (MG/L) (TONS/DAY) (CFS) (MG/L) (TONS/DAY)
OCTOBER NOVEMBER DECEMBER
1 12900 14 488 10700 12 347 23700 79 5030
2 13900 14 518 10600 12 343 29400 121 9600
3 13900 13 483 10600 12 343 27400 120 8870
4 14100 12 462 10700 12 347 24000 111 7190
5 13900 12 465 10700 12 347 21800 76 4460
6 12800 13 441 11200 12 363 20200 52 2810
7 13600 13 483 11700 12 375 21000 53 2980
8 13100 14 479 11800 10 331 25500 70 4820
9 13500 14 508 11500 10 311 29400 91 7250
10 13200 15 517 11400 10 308 30700 93 7690
11 13700 15 548 11900 10 321 27700 79 5910
12 13600 14 523 11800 10 319 24300 66 4320
13 13200 14 485 11700 11 335 21500 56 3220
14 12600 13 443 12900 14 485 20000 49 2650
15 11700 12 394 13200 12 427 20800 44 2450
16 11000 12 343 14300 11 407 23800 49 3170
17 10800 9 251 14500 12 484 27500 135 10000
18 10900 10 290 14900 15 596 25900 138 9640
19 10500 10 293 15900 18 762 24100 84 5450
20 10700 11 307 16600 21 954 23900 53 3390
21 11300 11 334 17000 26 1170 22800 43 2670
22 11900 11 362 17700 31 1500 21100 37 2100
23 11800 12 370 17000 40 1850 19000 31 1610
24 11700 12 377 16000 41 1770 17800 27 1300
25 10600 12 346 15300 41 1690 17000 25 1160
26 9980 13 338 16200 43 1870 16300 24 1080
27 10000 13 351 20300 56 3070 15900 25 1090
28 10200 14 372 24900 81 5460 15500 23 972
29 10400 14 387 26600 133 9560 15000 21 861
30 10400 13 360 24200 86 5620 14700 21 824
31 10400 12 338 --- --- --- 14600 19 758
TOTAL 372280 --- 12656 443800 --- 42065 682300 --- 125325
JANUARY FEBRUARY MARCH
1 14300 19 734 70000 113 21400 73000 95 18800
2 14300 20 778 71900 131 25500 71400 96 18500
3 15600 29 1240 84300 171 38900 70400 80 15300
4 18900 45 2280 94100 169 43000 69700 72 13600
5 25300 68 4650 90300 122 29800 68900 78 14400
6 28100 89 6780 86100 110 25600 69000 74 13900
7 26400 77 5510 84300 131 29700 68100 67 12300
8 23900 69 4450 86800 126 29500 66900 82 14800
9 24200 61 3990 84000 116 26400 65700 82 14500
10 24500 60 3970 81400 106 23400 64500 87 15200
11 25300 65 4440 79600 106 22800 62600 99 16800
12 34500 160 14900 78100 110 23200 59800 104 16700
13 53600 315 45600 78000 113 23800 56900 102 15700
14 58500 346 54600 80300 112 24200 54100 108 15800
15 63700 444 76300 86700 100 23400 52200 134 18900
16 71700 311 60300 86100 82 19000 51200 181 25000
17 73600 237 47200 84700 89 20300 49900 149 20000
18 77800 201 42300 83000 92 20500 47600 130 16700
19 79400 173 37100 80900 96 20900 47700 121 15600
20 77400 148 30800 81000 106 23100 50500 111 15200
21 75300 144 29400 79100 90 19200 51800 97 13500
22 73600 139 27600 80700 104 22600 54300 105 15500
23 71800 132 25600 81100 95 20900 58400 123 19400
24 70300 118 22500 80000 104 22400 64700 144 25100
25 68800 118 21900 78300 109 23100 72200 180 35100
26 67800 101 18600 77200 108 22500 76400 143 29500
27 67600 98 17800 75900 110 22500 77700 125 26300
28 67700 92 16800 74400 113 22700 77900 105 22100
29 69500 118 22100 --- --- --- 76700 89 18500
30 71200 133 25600 --- --- --- 75100 78 15800
31 70700 125 23800 --- --- --- 73400 78 15500
TOTAL 1605300 --- 699622 2278300 --- 690300 1978700 --- 564000
SEDIMENT DISCHARGE, SUSPENDED (TONS/DAY), WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998
MEAN MEAN MEAN
MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT MEAN CONCEN- SEDIMENT
DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE DISCHARGE TRATION DISCHARGE
DAY (CFS) (MG/L) (TONS/DAY) (CFS) (MG/L) (TONS/DAY) (CFS) (MG/L) (TONS/DAY)
APRIL MAY JUNE
1 72300 71 13900 45700 70 8630 69000 81 15100
2 70900 66 12600 46400 70 8810 70500 83 15800
3 70600 72 13800 47300 71 9020 69000 75 14000
4 70800 64 12200 48600 71 9320 67100 68 12300
5 70100 73 13800 49300 71 9500 65500 69 12100
6 69400 59 11100 49500 65 8700 64600 68 11800
7 69000 62 11500 49700 53 7150 64100 71 12200
8 68800 64 11900 48800 59 7830 63500 59 10000
9 68600 66 12200 46800 59 7500 62600 47 7930
10 67900 75 13700 44900 69 8330 60400 55 8900
11 66900 71 12900 44400 76 9070 58400 65 10200
12 65100 68 11900 44500 80 9660 56600 64 9820
13 63200 67 11500 46000 57 7050 56300 71 10800
14 61600 69 11500 49100 55 7320 56700 89 13600
15 59500 64 10300 50100 53 7200 58200 77 12000
16 56700 69 10600 49900 52 6950 60300 95 15400
17 53900 101 14700 49800 52 7010 60600 97 15900
18 50600 131 17900 51000 62 8550 59200 75 12000
19 47400 108 13800 51800 100 14000 56300 53 8100
20 45800 98 12200 50600 92 12600 52400 72 10100
21 45000 81 9880 48100 75 9700 49800 69 9300
22 44100 79 9390 45700 62 7690 48800 65 8590
23 43900 81 9650 43500 66 7770 47700 68 8760
24 44900 72 8750 42200 72 8160 46300 73 9100
25 46700 77 9720 42100 74 8360 44800 78 9430
26 47700 105 13500 43000 72 8320 42200 84 9510
27 47500 126 16200 45500 60 7380 40700 89 9750
28 48000 109 14200 49100 64 8530 40300 80 8700
29 47400 80 10300 52200 70 9860 39800 69 7370
30 46200 71 8870 57000 74 11400 39000 68 7110
31 --- --- --- 63200 77 13200 --- --- ---
TOTAL 1730500 --- 364460 1495800 --- 274570 1670700 --- 325670
JULY AUGUST SEPTEMBER
1 37500 69 7030 23700 51 3270 26100 46 3260
2 36100 70 6860 23800 52 3340 26500 44 3130
3 34600 63 5920 24000 53 3440 26900 42 3020
4 33600 64 5780 24400 53 3510 27400 41 3040
5 32600 59 5180 24300 50 3300 28300 41 3160
6 32100 49 4270 24400 47 3100 28500 42 3190
7 31400 41 3450 24600 44 2960 28600 42 3220
8 29900 39 3120 24300 45 2930 28400 42 3210
9 29200 41 3200 24700 45 3020 27800 42 3150
10 28700 40 3090 25100 46 3090 27200 42 3080
11 28000 39 2960 25400 44 2990 28600 42 3250
12 26900 40 2890 25000 41 2790 27900 43 3210
13 26000 41 2850 25100 39 2660 26400 43 3080
14 25700 41 2870 25500 38 2590 24600 44 2910
15 25200 42 2870 25400 39 2700 23600 44 2830
16 24500 43 2860 24900 42 2850 23100 45 2800
17 24100 45 2900 24500 44 2910 23200 45 2820
18 23400 44 2760 24500 41 2700 24200 44 2870
19 23200 42 2650 24900 40 2680 24100 39 2540
20 23000 41 2560 25300 45 3060 24100 34 2230
21 23100 40 2490 25800 43 3030 23800 30 1940
22 22900 38 2360 25800 43 2990 23000 28 1740
23 22700 30 1860 25800 42 2960 23800 31 2020
24 22700 29 1770 26000 42 2950 23700 35 2230
25 23000 30 1830 e26100 41 2920 23600 35 2230
26 23200 30 1880 e26200 41 2910 23300 35 2200
27 23100 31 1910 e26300 42 2990 23300 35 2200
28 e23300 32 2000 26400 43 3070 23200 35 2190
29 e23500 36 2280 26200 44 3130 23000 35 2170
30 e23700 41 2620 26000 47 3270 23300 35 2200
31 23800 49 3150 26100 48 3410 --- --- ---
TOTAL 830700 --- 100220 780500 --- 93520 759500 --- 81120
YEAR 14628380 3373528
e Estimated.
1998 California Hydrologic Data Report Index
USGS Water Resources of California
Contact:
webmaster@maildcascr.wr.usgs.gov
Last modified: Wed Aug 4 09:40:26 PDT 1999