11162765 SAN FRANCISCO BAY AT SAN MATEO BRIDGE, NEAR FOSTER CITY, CA
LOCATION.-Lat 37°35'04", long 122°14'59", unsurveyed, T.4 S., R.4 W., in San Mateo County, Hydrologic Unit 18050004, on Pier 20 of the
San Mateo Bridge.
PERIOD OF DAILY RECORD.-
SPECIFIC CONDUCTANCE: October 1989 to current year.
WATER TEMPERATURE: October 1989 to current year.
INSTRUMENTATION.-Water-quality monitor since October 1989.
REMARKS.-Interruptions in record were due to malfunction of the sensing and (or) recording instruments. Upper probe is set at 3.5 ft below Mean
Lower Low Water (MLLW). Lower probe is set at 36.0 ft below MLLW. Daily maximums and minimums sometimes differ from tidal-cycle
(24.8 hours) maximums and minimums.
EXTREMES FOR PERIOD OF RECORD.-
SPECIFIC CONDUCTANCE: (Upper probe) Maximum recorded, 50,200 microsiemens, Sept. 5, 1990; minimum recorded,
11,500 microsiemens, Mar. 17, 1996.
(Lower probe) Maximum recorded, 50,300 microsiemens, Oct. 31, Nov. 4, 9, 1990; minimum recorded, 16,000 microsiemens, Apr. 2, 4,
1995.
WATER TEMPERATURE: (Upper probe) Maximum recorded, 23.5C, Aug. 1, 2, 28, 1993, Aug. 8, 1995; minimum recorded, 6.5C, on several
days in December 1990 and January 1991.
(Lower probe) Maximum recorded, 23.0C, on several days in August 1990, July 16, 17, 1992, Aug. 2-6, 1993, July 16, 31, and several
days in August 1995; minimum recorded, 6.5C, Dec. 30, 1990, to Jan. 2, 1991.
EXTREMES FOR CURRENT YEAR.-
SPECIFIC CONDUCTANCE: (Upper probe) Maximum recorded, 47,000 microsiemens, Aug.16, 21-23; minimum recorded,
12,600 microsiemens, Feb. 2.
(Lower probe) Maximum recorded, 47,000 microsiemens, Sept. 29, 30; minimum recorded, 16,100 microsiemens, Feb. 3.
WATER TEMPERATURE: (Upper probe) Maximum recorded, 23.0C, Aug. 26; minimum recorded, 9.0C, Jan. 16-19.
(Lower probe) Maximum recorded, 22.5C, several days in July, August, and September; minimum recorded, 9.0C, several days in
January.
SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
(UPPER PROBE)
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
OCTOBER NOVEMBER DECEMBER JANUARY FEBRUARY MARCH
1 44800 43800 45100 44000 43800 42700 35000 33300 16300 13900 26200 22500
2 44800 43900 45100 44200 44000 42900 34800 30400 15100 12600 29200 23800
3 45000 43700 45300 44300 43900 43200 32000 19700 15300 12900 28700 23000
4 44900 43800 45300 44200 43800 42900 25900 16100 16800 13700 29800 23500
5 44900 43700 45400 44300 43500 42100 20900 14000 19100 14400 30600 23900
6 45000 44000 45400 43800 43500 42300 18500 13700 19300 15300 30400 26800
7 45200 43800 45300 42800 43400 42000 18700 15600 19500 15800 30900 27000
8 45100 44100 45300 41800 43600 41900 18900 15500 19600 15400 31000 26700
9 45500 43900 45300 42200 43500 41600 18400 16200 19900 15900 31300 27400
10 45100 43800 45300 41900 42700 40900 18300 17000 19800 16500 31600 28500
11 45000 43900 45500 43900 42500 40900 18300 16800 20100 17200 32100 28800
12 44800 43700 45200 44000 42300 41100 18000 16600 19800 17000 31900 28200
13 44600 43800 45000 43900 42300 41200 18100 16900 19300 16900 32300 28800
14 45200 44000 45100 44100 42800 39400 18000 17200 19900 16800 32800 28600
15 45300 44200 45200 44000 43000 41300 17800 16900 21400 16400 32600 29300
16 45400 44000 45000 43200 43100 41600 18100 16800 22100 17300 32600 29000
17 45400 43900 44900 43200 43000 40000 19200 17200 23600 17800 35100 30000
18 45300 43800 44700 43300 42600 38900 20100 17300 22500 18100 33900 30600
19 45300 43600 44500 43200 41500 36300 22000 17600 24200 18100 34400 31300
20 45200 43600 44500 42900 40400 35200 21200 18000 24800 18400 34700 31700
21 45400 44400 44200 43200 39900 35000 23900 18100 25400 19100 34900 32500
22 45400 43400 44400 42900 39200 35100 25600 20600 25900 20900 34700 33100
23 44900 43700 44300 43100 38600 36100 --- --- 26500 21100 35200 33100
24 44700 43600 44300 43000 38400 35800 25300 19300 26100 21400 35000 33000
25 44700 43600 44400 43100 38000 33600 24400 20800 25500 21900 35200 33200
26 45300 42500 44500 40100 37300 33000 23800 20800 26100 22500 35100 33500
27 45400 43300 44700 43000 36600 32700 23400 19600 26900 21200 35100 33400
28 45300 44100 44200 42900 36100 33300 22000 18400 26900 22500 34900 33200
29 45100 43500 44100 43000 35000 32500 19400 16900 --- --- 35200 32900
30 44900 43700 44000 42900 34400 32900 18200 15200 --- --- 35600 33100
31 45300 43900 --- --- 34500 32700 17000 14700 --- --- 35200 32500
MONTH 45500 42500 45500 40100 44000 32500 --- --- 26900 12600 35600 22500
SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
(UPPER PROBE)
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
APRIL MAY JUNE JULY AUGUST SEPTEMBER
1 35500 32200 40700 38800 42400 41400 45000 44000 46300 45200 46600 45800
2 35600 32100 40700 39300 42800 41500 45200 44100 46300 45200 46600 45800
3 35200 31700 40900 39200 42800 41600 45200 44300 46000 45300 46700 45700
4 35300 32500 41200 39500 42700 41600 45200 44400 46300 45200 46800 45800
5 35900 32300 41400 39900 42800 41200 45200 44600 45900 45300 46600 45800
6 36200 33400 41600 39800 42800 41700 45400 44400 46100 45300 46700 45700
7 36300 33900 41400 40100 42900 41600 45100 44400 46100 45500 46600 45900
8 36500 33100 41300 40100 42900 41700 45400 44500 46000 45500 46700 45500
9 36100 32600 41200 40100 43100 41800 45100 44600 46500 45500 46700 45800
10 36400 34400 41100 40100 42900 41900 45800 44700 46600 45800 46600 45600
11 --- --- 41300 40200 42800 41800 46000 44700 46700 45900 46500 45400
12 37400 34300 41200 40100 42600 41400 46000 44200 46700 45900 46400 45500
13 37300 35000 41600 40600 43200 41900 45700 43800 46700 45900 46500 45300
14 37800 34500 41600 40200 43400 42600 45600 43700 46900 45500 46400 45200
15 38500 35000 41600 40300 43400 42700 45700 44900 46600 45500 46400 45300
16 38600 35400 41900 40300 --- --- 45700 43800 47000 45600 46100 45100
17 39400 35800 42200 40500 --- --- 45900 44900 46700 45700 46000 45000
18 39600 35900 42200 40500 --- --- 45900 44300 46700 45700 46600 45100
19 39700 36900 41600 40600 --- --- 45900 44500 46600 45500 46400 45100
20 39600 37500 41300 40200 --- --- 46000 45000 46800 45600 46500 45300
21 39500 37700 41500 40000 --- --- 46000 45000 47000 45600 46500 45200
22 39600 38200 --- --- --- --- 46100 45100 47000 45900 46400 45200
23 39500 37700 41700 40400 --- --- 46200 45100 47000 46100 46500 45300
24 39600 38000 41700 40700 44200 43300 45800 45000 46900 45900 46400 45200
25 39600 38100 41700 40800 44200 43200 45900 45000 46900 45800 46000 45300
26 39900 38400 41800 40800 44500 43300 46100 45100 46800 45700 46000 45400
27 40000 38300 41800 40800 44400 43500 46300 45200 46600 45500 46700 45600
28 40000 38700 42000 40800 44300 43600 46100 44600 46500 45500 46700 45700
29 40300 38500 42400 41000 44800 43800 46100 45300 46400 45500 46700 45200
30 40500 38700 42200 41300 44800 43900 46000 45200 46800 45700 46400 45700
31 --- --- 42500 41100 --- --- 46000 45300 46600 45700 --- ---
MONTH --- --- --- --- --- --- 46300 43700 47000 45200 46800 45000
SPECIFIC CONDUCTANCE, US/CM @ 25 DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
(LOWER PROBE)
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
OCTOBER NOVEMBER DECEMBER JANUARY FEBRUARY MARCH
1 45100 44100 45400 44400 44400 43100 36400 34600 23300 20500 28900 24400
2 45000 44000 45300 44200 44100 43200 37000 34900 23300 17200 33600 26800
3 44900 44100 45200 44200 43900 43300 36100 31200 23600 16100 35300 30800
4 44900 43700 45100 44100 43900 43300 34900 31100 25300 16400 34700 28700
5 45100 44100 45200 44200 44000 43200 34200 26000 24900 16300 32900 27400
6 45100 44200 45100 44200 43800 42800 31400 19500 21400 16500 30900 27900
7 45200 44300 45300 44200 43600 42500 26600 18800 20100 16600 31000 27700
8 45200 44400 45400 44300 43500 42200 21100 17800 20300 16800 31400 27900
9 45400 44400 45400 44200 43300 42500 18600 17200 20300 17000 31600 28400
10 45300 44400 45400 44100 43100 42100 18100 17200 20500 17600 32100 28800
11 45400 44600 45400 44000 42900 41600 17900 17000 20200 17900 32500 29100
12 45400 44400 45300 44000 42800 41600 17800 17000 20200 17500 32400 29100
13 45500 44400 45400 43900 42700 41400 17600 17000 19800 17500 32900 29400
14 45600 44100 45400 44000 42700 41600 17500 17000 21500 17700 33400 29900
15 45500 44200 45200 43500 42800 41800 18600 17100 26600 19600 33400 30400
16 45500 44100 45200 44200 42800 42000 21400 17200 28900 22500 35100 30500
17 45400 44300 45100 44100 42500 41600 22800 17400 31700 20200 37800 34300
18 45300 44100 45000 44200 42400 41200 23500 17700 27600 19400 37400 34200
19 45200 43800 45000 44000 42000 40700 24400 18500 26700 21400 36800 34200
20 44900 43800 44900 44200 41300 39100 24200 19100 26700 22200 36000 34000
21 44900 43900 44900 44100 40100 37600 27300 20200 27500 22500 35800 33900
22 45100 44000 44900 43800 38900 37000 28200 22400 27700 23300 35800 34100
23 45100 44000 44800 43400 38200 37100 --- --- 28600 23500 35900 34000
24 45100 44000 44700 43500 38000 36800 26700 23300 27200 23200 36100 34000
25 45200 43800 44700 43500 37700 35900 25400 22600 26600 23000 36300 34000
26 45200 44000 44800 43700 37000 35600 25800 22500 26700 23000 36500 34300
27 45300 44200 44700 43600 36200 34800 25600 23200 28600 22000 36200 34000
28 45500 44400 44600 43400 35700 34600 25300 23000 29800 23200 36400 33600
29 45500 44200 44300 43100 35000 33500 24800 22800 --- --- 37300 34000
30 45200 44100 44300 43500 34300 33700 24400 22000 --- --- 37400 34800
31 45400 44300 --- --- 35600 33700 23800 20700 --- --- 37500 34400
MONTH 45600 43700 45400 43100 44400 33500 --- --- 31700 16100 37800 24400
APRIL MAY JUNE JULY AUGUST SEPTEMBER
1 36400 33800 41500 39000 43500 40900 45600 43800 45800 45200 46500 45900
2 36100 33400 41400 39100 43400 40900 45400 43900 46000 45200 46400 45800
3 35700 33400 41400 39200 43100 40700 45500 44300 45900 45200 46300 45700
4 36500 33700 41700 39100 43500 40900 45500 44400 46000 45200 46300 45800
5 37100 34100 42000 39400 43500 40700 45400 44300 46200 45400 46400 45900
6 37100 34300 42400 39500 43400 41100 45600 44500 46300 45500 46300 45900
7 37300 34500 42000 39800 43400 41000 45700 44500 46300 45600 46400 45700
8 37600 34600 41900 39700 43100 41200 45600 44400 46400 45600 46300 45900
9 37300 34500 41700 39700 43500 41500 46000 44600 46300 45700 46300 45600
10 37800 34900 41700 39700 43600 41400 45800 44900 46500 45700 46300 45900
11 --- --- 41700 39900 43300 41400 45900 44600 46300 45500 46400 45800
12 38500 35500 41800 40000 43200 41600 46100 45100 46200 45500 46400 45800
13 39400 36100 41800 40100 43700 42300 45900 45200 46200 45500 46400 46000
14 40600 36200 41900 40000 43500 42500 45700 45200 46400 45600 46500 46000
15 41300 37800 42000 40100 43700 42700 45700 45200 46500 46100 46500 45800
16 41300 37900 41900 40100 --- --- 45800 45300 46700 46200 46400 45800
17 41500 38500 41800 40300 --- --- 46100 45200 46700 46100 46600 45800
18 41700 39100 41700 40100 --- --- 45900 45000 46600 46000 46600 45800
19 41500 39700 42100 40500 --- --- 45900 45000 46500 45800 46400 45900
20 41600 39600 42200 40400 --- --- 45800 44800 46500 45900 46600 46000
21 41600 39400 42300 39900 --- --- 45800 44700 46600 45900 46600 45800
22 41600 39500 --- --- --- --- 45800 44900 46700 45900 46600 46000
23 41700 39100 42600 40500 --- --- 45800 45000 46600 46000 46800 46100
24 41700 38400 43000 40400 44900 43300 45900 45200 46500 45900 46900 46300
25 41200 38800 42800 40300 44900 43500 45900 45300 46600 45700 46800 46200
26 41700 39000 42400 40400 45200 43500 46000 45300 46500 45700 46900 45600
27 41500 38800 42600 40600 45400 43600 46100 45200 46300 45600 46900 45900
28 41300 39100 43000 40500 45300 43700 46000 44600 46400 45700 46900 46200
29 41400 38700 43500 40800 45200 43600 45900 45100 46400 45800 47000 46200
30 41900 38700 42700 40900 45100 43900 45900 45000 46400 45800 47000 46000
31 --- --- 42800 41100 --- --- 45900 45200 46400 45800 --- ---
MONTH --- --- --- --- --- --- 46100 43800 46700 45200 47000 45600
WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
(UPPER PROBE)
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
OCTOBER NOVEMBER DECEMBER JANUARY FEBRUARY MARCH
1 19.0 18.5 15.5 14.0 13.5 13.0 13.5 12.5 12.5 11.5 12.5 11.5
2 19.0 18.0 14.0 13.5 13.5 12.5 13.5 13.0 13.0 11.5 12.5 11.5
3 19.0 18.0 14.0 13.5 13.0 12.5 13.5 12.5 13.0 11.5 13.0 12.0
4 19.0 18.0 14.0 13.5 13.0 12.5 13.0 12.0 13.0 12.0 12.5 12.0
5 19.5 18.0 14.0 13.5 13.5 13.0 12.5 11.5 13.5 12.0 12.5 11.5
6 19.5 18.0 14.0 13.0 13.5 13.0 12.0 11.0 13.0 11.5 12.5 11.5
7 21.0 18.5 14.0 13.0 13.5 13.0 12.0 11.0 13.0 12.0 13.0 11.5
8 21.5 19.0 14.0 13.5 13.5 13.5 11.5 11.0 13.0 12.0 13.0 11.5
9 20.5 19.0 14.0 13.5 13.5 13.5 12.0 11.0 12.5 12.0 13.5 12.0
10 20.0 19.0 14.5 13.5 13.5 13.0 11.5 11.0 13.5 12.0 13.5 12.0
11 20.5 19.0 14.0 13.5 14.0 13.5 11.5 11.0 13.0 12.0 13.5 12.5
12 20.5 19.0 14.0 13.5 14.5 13.5 11.0 11.0 13.0 12.5 13.5 12.5
13 20.0 19.0 14.0 14.0 14.0 14.0 11.0 10.0 13.5 12.0 13.5 12.5
14 20.0 19.0 14.0 13.5 14.0 13.5 10.0 9.5 14.0 12.5 13.5 12.5
15 19.5 19.0 13.5 13.0 14.0 13.0 10.0 9.5 13.5 12.5 13.5 13.0
16 19.0 18.0 13.5 13.0 14.0 13.0 10.0 9.0 14.0 12.5 13.5 13.0
17 18.5 17.5 13.5 13.0 13.5 12.5 10.0 9.0 14.0 12.5 14.5 12.5
18 18.0 17.5 14.0 13.5 13.5 12.5 10.0 9.0 14.0 12.5 15.0 13.0
19 17.5 16.0 14.0 13.5 13.0 12.0 10.0 9.0 14.0 13.0 15.5 13.5
20 16.5 16.0 14.0 13.5 12.5 11.5 10.0 9.5 13.5 12.5 15.0 13.5
21 16.5 15.5 14.0 13.5 12.0 11.5 10.0 9.5 14.0 12.5 15.5 13.5
22 16.5 15.5 14.0 14.0 12.0 11.5 10.5 10.0 14.0 12.5 15.5 14.0
23 16.5 15.5 14.0 14.0 12.0 11.5 11.0 10.0 13.5 12.5 15.5 14.0
24 16.0 15.5 14.5 14.0 12.0 11.5 11.0 10.0 13.0 12.5 16.5 14.0
25 16.0 15.0 14.5 14.0 11.5 11.0 11.5 10.5 13.0 12.0 17.0 14.5
26 15.0 14.0 15.0 14.0 11.5 11.0 12.0 11.0 12.5 12.0 16.0 15.0
27 15.0 14.0 15.0 14.0 11.5 11.5 12.5 11.0 12.0 12.0 16.0 15.0
28 15.0 14.0 14.5 14.0 11.5 11.5 13.0 11.5 12.0 11.5 16.0 15.0
29 14.5 14.0 14.0 13.5 11.5 11.5 13.0 11.5 --- --- 16.5 15.5
30 14.5 13.5 14.0 13.0 12.5 11.5 12.5 11.5 --- --- 16.0 15.5
31 15.0 13.5 --- --- 12.5 12.0 12.5 11.5 --- --- 16.0 15.0
MONTH 21.5 13.5 15.5 13.0 14.5 11.0 13.5 9.0 14.0 11.5 17.0 11.5
APRIL MAY JUNE JULY AUGUST SEPTEMBER
1 15.5 15.0 16.0 15.5 21.5 20.5 20.0 19.5 22.0 21.0 22.0 21.5
2 15.0 14.0 16.5 15.5 21.5 20.5 20.5 19.5 22.0 21.0 22.0 21.5
3 14.5 14.0 17.0 16.0 21.5 20.0 20.5 19.5 21.5 21.0 22.0 21.5
4 15.0 14.0 17.0 16.0 21.0 20.0 21.0 20.0 22.0 21.0 22.5 21.5
5 15.0 14.0 17.5 16.0 20.5 20.0 21.0 20.0 22.0 21.0 22.5 22.0
6 15.0 14.0 17.5 16.0 20.0 19.5 21.0 20.0 22.0 21.0 22.5 22.0
7 15.0 14.0 17.5 16.5 20.0 19.5 21.0 20.0 22.0 21.0 22.0 21.5
8 15.0 14.0 18.0 16.5 21.0 20.0 21.5 20.5 22.5 21.5 22.0 21.5
9 14.5 14.5 18.0 17.0 20.5 20.0 21.5 20.5 22.5 21.5 22.0 21.5
10 15.0 14.0 18.0 17.5 20.5 20.0 21.5 20.5 22.0 22.0 22.0 21.5
11 --- --- 18.0 17.5 20.5 20.0 21.5 20.5 22.5 22.0 22.0 21.5
12 15.0 14.0 18.0 17.5 20.0 19.5 21.5 20.5 22.5 22.0 22.0 21.0
13 15.0 14.5 18.5 17.5 19.5 19.0 22.0 21.0 22.5 22.0 22.0 21.0
14 15.5 14.5 19.0 18.0 20.5 19.0 22.0 21.0 22.5 21.5 22.0 21.0
15 16.0 14.5 19.5 18.0 20.5 19.0 22.5 21.5 22.5 21.5 21.5 21.0
16 16.5 15.0 20.5 18.5 --- --- 22.0 21.5 22.5 21.5 21.5 21.0
17 17.0 15.0 21.0 19.0 --- --- 22.0 21.0 22.5 21.0 21.5 21.0
18 17.5 15.0 21.5 19.5 --- --- 22.0 20.5 22.0 21.0 21.0 21.0
19 17.5 15.5 21.5 20.0 --- --- 22.0 20.5 22.0 21.0 21.0 20.5
20 17.5 15.5 21.0 20.0 --- --- 22.0 21.0 21.5 21.0 21.0 20.5
21 18.0 16.0 21.0 20.0 --- --- 22.0 21.0 22.0 21.0 21.5 21.0
22 17.5 16.0 --- --- --- --- 22.0 21.0 22.0 21.0 21.5 21.0
23 17.0 16.0 21.0 20.0 --- --- 22.0 21.0 22.0 21.5 22.5 21.0
24 17.0 16.5 20.5 19.5 20.5 19.5 22.0 21.5 22.0 21.5 22.5 21.0
25 17.0 16.5 20.5 20.0 20.5 19.5 22.0 21.5 22.0 21.5 21.5 21.5
26 17.0 16.5 20.0 19.5 20.5 19.5 22.5 21.5 23.0 22.0 21.5 21.5
27 17.0 16.5 20.5 19.5 20.5 19.5 22.5 21.5 22.5 21.5 21.5 21.0
28 17.0 16.0 20.5 20.0 20.0 19.0 22.5 21.5 22.5 22.0 22.0 21.0
29 16.5 16.0 21.0 20.0 20.0 19.0 22.5 21.5 22.5 22.0 22.0 21.0
30 16.5 15.5 21.5 20.5 20.0 19.0 22.5 21.5 22.5 21.5 22.0 21.0
31 --- --- 22.0 20.5 --- --- 22.5 21.5 22.5 21.5 --- ---
MONTH --- --- --- --- --- --- 22.5 19.5 23.0 21.0 22.5 20.5
WATER TEMPERATURE, DEGREES CELSIUS, WATER YEAR OCTOBER 1996 TO SEPTEMBER 1997
(LOWER PROBE)
DAY MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN
OCTOBER NOVEMBER DECEMBER JANUARY FEBRUARY MARCH
1 19.5 18.5 15.0 14.5 13.0 12.5 12.0 11.5 11.5 11.5 11.5 11.5
2 19.0 18.5 15.0 14.5 13.0 12.5 12.0 11.5 12.5 11.5 11.5 11.0
3 19.0 18.5 14.5 14.0 12.5 12.0 12.5 11.5 12.0 11.5 11.5 11.0
4 19.0 18.5 14.5 14.0 12.5 12.5 12.5 12.0 12.5 11.5 12.0 11.5
5 19.0 18.5 14.5 14.0 12.5 12.5 12.0 12.0 12.5 11.0 12.5 11.5
6 19.0 18.5 14.0 14.0 12.5 12.5 12.5 11.0 12.5 11.5 12.5 11.5
7 19.5 19.0 14.5 14.0 13.0 12.5 12.0 11.0 12.5 11.5 13.0 11.5
8 20.0 19.0 14.5 13.5 13.0 12.5 11.5 11.0 12.5 11.5 13.0 11.5
9 20.0 19.5 14.5 13.5 13.5 12.5 11.5 11.0 12.5 11.5 13.0 11.5
10 20.5 19.5 14.5 14.0 13.5 12.5 11.5 10.5 12.5 11.5 13.5 12.0
11 20.0 19.5 15.0 14.0 13.5 12.5 11.0 10.0 12.5 11.5 13.5 12.5
12 20.0 19.0 15.0 14.0 13.5 12.5 11.0 10.0 12.0 11.5 13.5 12.5
13 20.0 19.0 15.0 14.0 13.5 13.0 11.0 9.5 12.0 11.5 13.5 12.5
14 20.0 19.0 14.5 14.0 13.5 13.0 10.0 9.0 12.0 11.5 13.0 12.5
15 19.5 18.5 14.5 13.5 13.5 12.5 9.5 9.0 12.0 11.5 13.5 13.0
16 19.0 18.0 14.0 13.5 13.0 12.5 9.5 9.0 12.0 11.5 13.5 12.5
17 18.5 17.5 14.0 13.5 13.0 12.5 9.5 9.0 12.5 11.5 12.5 12.0
18 18.0 17.5 14.5 13.5 12.5 12.0 9.5 9.0 13.0 12.0 13.0 12.0
19 17.5 16.0 14.5 14.0 12.5 12.0 9.5 9.0 13.0 12.0 13.5 12.0
20 16.5 16.0 14.5 14.0 12.0 11.5 9.5 9.0 13.0 12.0 13.5 12.5
21 16.0 15.5 14.0 13.5 12.0 11.5 9.5 9.0 13.0 12.0 14.0 13.0
22 16.0 15.5 14.0 13.5 11.5 11.5 10.0 9.0 12.5 12.0 14.5 13.5
23 16.0 15.5 14.5 13.5 11.5 11.0 10.0 9.5 13.0 12.0 15.0 14.0
24 16.0 15.5 14.0 13.5 11.5 10.5 10.0 9.5 12.5 12.0 15.0 14.0
25 16.0 14.5 14.0 13.5 11.5 10.5 10.5 9.5 12.5 12.0 15.5 14.0
26 15.5 13.5 14.0 13.5 11.5 10.5 10.5 10.0 12.0 11.5 15.5 14.5
27 14.5 13.5 14.0 13.0 11.5 10.5 10.5 10.0 12.0 11.5 16.0 15.0
28 14.5 14.0 14.0 13.0 11.5 10.5 10.5 10.0 11.5 11.0 16.0 15.0
29 15.0 13.5 14.0 12.5 11.5 10.5 11.0 10.5 --- --- 15.5 15.0
30 14.5 13.5 13.0 12.5 11.5 11.0 11.5 10.5 --- --- 15.5 14.5
31 15.0 13.5 --- --- 11.5 11.0 11.5 11.0 --- --- 15.5 15.0
MONTH 20.5 13.5 15.0 12.5 13.5 10.5 12.5 9.0 13.0 11.0 16.0 11.0
APRIL MAY JUNE JULY AUGUST SEPTEMBER
1 15.5 15.0 16.5 15.5 22.0 20.5 20.0 19.0 22.0 21.0 22.0 21.5
2 15.0 14.0 16.5 16.0 21.5 20.0 20.5 19.5 22.0 21.0 22.0 21.5
3 14.5 14.0 17.0 16.0 21.5 20.0 20.5 19.5 21.5 21.0 22.0 21.5
4 15.0 14.0 17.0 16.0 21.0 19.5 20.5 20.0 21.5 21.0 22.0 21.5
5 15.0 13.5 17.5 16.5 20.5 19.5 21.0 19.5 22.0 21.0 22.5 21.5
6 15.0 14.0 17.5 16.5 20.0 19.5 21.0 19.5 22.0 21.0 22.0 21.5
7 15.0 14.0 18.0 16.5 20.0 19.5 21.0 20.0 22.0 21.0 22.0 21.5
8 15.0 14.0 18.0 17.0 20.0 19.5 21.5 20.0 22.0 21.0 22.0 21.5
9 15.0 14.0 18.0 17.0 20.0 19.5 21.5 20.5 22.0 21.5 22.0 21.5
10 14.5 14.0 18.0 17.5 20.0 19.5 21.5 20.5 22.0 21.5 22.0 21.5
11 --- --- 18.0 17.5 20.0 19.5 21.0 20.5 22.0 21.5 22.0 21.0
12 15.0 14.5 18.0 17.5 20.0 19.5 21.0 20.5 22.5 21.5 22.0 21.0
13 15.0 14.5 18.5 18.0 19.5 18.5 21.5 21.0 22.5 21.5 22.0 21.0
14 15.0 14.0 18.5 18.0 20.0 18.5 21.5 21.0 22.5 21.5 22.0 21.0
15 15.0 14.0 19.0 18.5 20.0 19.0 22.0 21.5 22.5 21.5 21.5 21.0
16 15.5 14.5 19.5 18.5 --- --- 22.5 21.5 22.5 21.0 21.5 21.0
17 15.5 14.5 20.0 19.0 --- --- 22.0 21.0 22.0 21.0 21.5 21.0
18 16.0 15.0 20.5 19.0 --- --- 22.0 20.5 22.0 21.0 21.0 21.0
19 16.0 15.0 20.5 19.5 --- --- 22.0 20.5 22.0 21.0 21.0 20.5
20 16.5 15.5 21.0 20.0 --- --- 22.0 21.0 21.5 21.0 21.0 20.5
21 17.0 16.0 21.5 20.5 --- --- 22.0 21.0 21.5 21.0 21.0 21.0
22 17.0 16.0 --- --- --- --- 22.0 21.0 21.5 21.0 21.0 21.0
23 17.5 16.5 21.0 20.0 --- --- 22.0 21.0 21.5 21.5 21.5 21.0
24 17.0 16.5 21.0 20.0 20.0 19.0 22.0 21.0 22.0 21.5 21.5 21.0
25 17.0 16.5 20.5 19.5 20.5 19.5 22.0 21.5 22.0 21.5 21.5 21.5
26 17.5 16.5 20.0 19.5 20.5 19.5 22.0 21.5 22.0 21.5 21.5 21.0
27 17.0 16.5 20.5 19.5 20.0 19.0 22.0 21.5 22.0 21.5 21.5 21.0
28 17.0 16.0 20.5 20.0 20.0 19.0 22.0 21.5 22.5 21.5 21.5 21.0
29 16.5 16.0 21.0 20.5 20.0 19.0 22.0 21.5 22.5 21.5 22.0 21.0
30 16.5 15.5 21.0 20.5 20.0 19.0 22.0 21.5 22.5 21.5 22.0 21.0
31 --- --- 21.5 21.0 --- --- 22.0 21.5 22.5 21.5 --- ---
MONTH --- --- --- --- --- --- 22.5 19.0 22.5 21.0 22.5 20.5
USGS Water Resources of California
USGS Headquarters | Biology
| Geology |
Mapping | Water
Contact:
webmaster@maildcascr.wr.usgs.gov
Last modified: Wed Mar 10 14:08:37 PST 1999