USGS Water-Year Summary for Site USGS 11453000

Click to hide Water-Year Summary instructions and information

Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
Not all sites have reports available for every water year.

	Available Parameters
	00060 Discharge(Mean)
	63680 Turbidity, Form Neph(Med.)
	63680 Turbidity, Form Neph(Med.) [NEP 5000]
	80154 Suspnd sedmnt conc(Mean)
	80155 Suspnd sedmnt disch(Mean)

Select a water year

Water year 2020: 2019-10-01 to 2020-09-30

Print this page

USGS Water-Year Summary 2020

11453000 Yolo Bypass near Woodland, CA

LOCATION - Lat 38°40'40", long 121°38'35" referenced to North American Datum of 1927, Yolo County, CA, Hydrologic Unit 18020163, unsurveyed, on left bank, 300 ft upstream from Sacramento and Woodland Railroad Bridge, 6 mi upstream from Sacramento Bypass, 6 mi downstream from Fremont Weir, and 7 mi east of Woodland.

DRAINAGE AREA - Drainage area below gage 11452500, Cache Creek at Yolo, CA, is indeterminate.

REVISIONS HISTORY - WDR CA-96-4: 1995 (instantaneous maximum discharge).

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1939 to current year (since October 1977, high flows only). Monthly discharge only for some periods, published in WSP 1315-A.

GAGE - Water-stage recorder. Datum of gage is 1.46 ft below NAVD of 1988 as determined by GNSS survey in 2023. Datum of gage is subject to change due to subsidence. Prior to Dec. 17, 1941, nonrecording gage, and Dec. 18-31, 1941, water-stage recorder, at datum 0.73 ft higher. Prior to Sept. 30, 1977, a supplementary water-stage recorder 6 mi downstream at different datum recorded low flow.

REMARKS - Records prior to 2015 not computed below 1,000 ft³/s. Flow is from Cache Creek and Knights Landing Ridge Cut plus floodwater passing over Fremont Weir. Published discharges reflect rated flows at this site minus the flows released at the Sacramento Weir Spill to Yolo Bypass, near Woodland (station 11426000), when it is in operation, which are provided by California Department of Water Resources. Beginning October 1977 through September 2014, only flows above 1,000 ft³/s were computed. See schematic diagrams of lower Sacramento River Basin and Sacramento-San Joaquin Delta available from the California Water Science Center.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 374,000 ft³/s, Feb. 20, 1986, gage height, 34.87 ft; no flow at times in several years.

DISCHARGE, CUBIC FEET PER SECOND
YEAR 2019-10-01 to 2020-09-30
DAILY MEAN VALUES

Day	Oct
	2019
1	41.9
2	27.2
3	26.4
4	27.9
5	44.0
6	42.6
7	26.8
8	23.4
9	30.0
10	38.2
11	19.1
12	15.0
13	11.8
14	11.4
15	10.8
16	10.8
17	12.1
18	11.7
19	11.3
20	10.7
21	10.1
22	9.69
23	9.39
24	9.03
25	9.05
26	10.1
27	9.67
28	9.72
29	9.75
30	9.56
31	9.85
Total	559
Mean	18.0
Max	44.0
Min	9.03
Ac-ft	1,109

Day	Nov
2019
1	11.4
2	11.7
3	10.7
4	10.6
5	10.2
6	10.1
7	12.7
8	15.5
9	15.2
10	13.4
11	14.5
12	13.3
13	12.5
14	12.3
15	13.6
16	18.7
17	18.6
18	19.2
19	21.1
20	26.0
21	24.2
22	23.0
23	22.6
24	22.2
25	22.6
26	30.3
27	31.3
28	30.6
29	29.3
30	54.1
--
Total	582
Mean	19.4
Max	54.1
Min	10.1
Ac-ft	1,153

Day	Dec
2019
1	297
2	762
3	266
4	123
5	82.6
6	70.4
7	73.8
8	65.6
9	89.8
10	124
11	95.5
12	77.5
13	68.6
14	65.0
15	63.1
16	61.3
17	57.9
18	57.6
19	58.5
20	56.7
21	56.3
22	62.0
23	67.5
24	65.2
25	64.1
26	62.3
27	61.6
28	60.0
29	58.6
30	59.5
31	61.2
Total	3,294
Mean	106
Max	762
Min	56.3
Ac-ft	6,534

Day	Jan
2020
1	62.3
2	64.0
3	67.1
4	63.7
5	60.9
6	59.0
7	58.6
8	56.2
9	95.2
10	88.6
11	72.4
12	68.8
13	68.0
14	54.8
15	51.9
16	59.9
17	72.3
18	69.2
19	70.7
20	74.0
21	73.6
22	69.7
23	85.6
24	90.3
25	94.7
26	96.8
27	88.5
28	84.8
29	173
30	148
31	134
Total	2,477
Mean	79.9
Max	173
Min	51.9
Ac-ft	4,912

Day	Feb
2020
1	135
2	130
3	135
4	151
5	135
6	115
7	140
8	167
9	112
10	98.9
11	119
12	157
13	143
14	124
15	114
16	107
17	95.8
18	91.7
19	88.7
20	86.2
21	82.5
22	78.0
23	77.2
24	73.4
25	75.8
26	77.5
27	76.5
28	72.7
29	73.5
--
--
Total	3,132
Mean	108
Max	167
Min	72.7
Ac-ft	6,213

Day	Mar
2020
1	76.6
2	73.7
3	77.1
4	80.5
5	72.5
6	47.3
7	44.9
8	42.7
9	42.1
10	42.2
11	42.2
12	42.4
13	41.7
14	41.7
15	47.1
16	51.1
17	45.0
18	41.9
19	40.9
20	40.1
21	46.1
22	45.0
23	46.4
24	44.0
25	41.6
26	40.0
27	37.4
28	37.2
29	38.9
30	28.1
31	30.4
Total	1,469
Mean	47.4
Max	80.5
Min	28.1
Ac-ft	2,913

Day	Apr
2020
1	38.5
2	37.0
3	32.6
4	31.4
5	32.5
6	33.6
7	39.6
8	46.5
9	43.1
10	39.8
11	36.8
12	34.9
13	33.2
14	31.0
15	30.3
16	30.2
17	30.0
18	29.7
19	30.4
20	29.7
21	29.7
22	29.0
23	28.5
24	27.8
25	29.0
26	30.0
27	29.7
28	30.4
29	30.2
30	28.0
--
Total	983
Mean	32.8
Max	46.5
Min	27.8
Ac-ft	1,950

Day	May
2020
1	24.1
2	24.7
3	26.3
4	27.4
5	28.1
6	29.4
7	29.1
8	29.7
9	28.8
10	27.7
11	28.6
12	28.6
13	28.7
14	28.5
15	29.9
16	28.9
17	31.2
18	31.4
19	31.1
20	31.3
21	32.2
22	30.1
23	29.4
24	28.5
25	29.0
26	25.5
27	23.4
28	23.9
29	24.2
30	30.8
31	26.9
Total	877
Mean	28.3
Max	32.2
Min	23.4
Ac-ft	1,739

Day	Jun
2020
1	25.7
2	25.2
3	22.1
4	13.7
5	12.1
6	11.6
7	11.3
8	14.3
9	15.2
10	14.3
11	18.7
12	19.7
13	18.8
14	20.9
15	22.5
16	23.8
17	24.5
18	23.3
19	19.5
20	19.2
21	18.4
22	17.3
23	16.3
24	15.0
25	14.9
26	15.3
27	13.2
28	12.9
29	15.3
30	18.9
--
Total	534
Mean	17.8
Max	25.7
Min	11.3
Ac-ft	1,059

Day	Jul
2020
1	21.0
2	22.5
3	21.5
4	22.7
5	22.5
6	22.6
7	23.3
8	22.9
9	21.7
10	20.3
11	20.0
12	20.6
13	21.9
14	21.3
15	21.5
16	22.1
17	22.4
18	23.7
19	22.5
20	19.4
21	19.8
22	21.9
23	19.7
24	18.1
25	18.6
26	20.0
27	21.6
28	23.6
29	23.1
30	22.7
31	21.3
Total	667
Mean	21.5
Max	23.7
Min	18.1
Ac-ft	1,323

Day	Aug
2020
1	21.7
2	22.1
3	18.6
4	15.0
5	13.4
6	13.1
7	14.6
8	13.3
9	13.5
10	17.4
11	20.1
12	18.3
13	19.7
14	22.6
15	20.9
16	17.2
17	16.8
18	16.6
19	15.1
20	15.5
21	17.0
22	18.4
23	15.9
24	14.6
25	12.8
26	12.0
27	12.0
28	13.3
29	19.7
30	21.7
31	24.3
Total	527
Mean	17.0
Max	24.3
Min	12.0
Ac-ft	1,046

Day	Sep
2020
1	35.1
2	73.2
3	41.9
4	22.0
5	37.5
6	54.1
7	45.6
8	19.9
9	15.9
10	18.9
11	32.0
12	53.3
13	46.1
14	26.6
15	17.8
16	25.4
17	54.7
18	67.9
19	63.5
20	54.2
21	43.2
22	32.1
23	26.7
24	24.6
25	22.2
26	19.2
27	17.2
28	15.6
29	14.2
30	15.1
--
Total	1,036
Mean	34.5
Max	73.2
Min	14.2
Ac-ft	2,054

STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1946 - 2020, BY WATER YEAR (WY)
	Oct	Nov	Dec	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep
Mean	366	620	6,075	16,060	16,810	9,514	6,206	482	159	26.7	32.3	73.9
Max	13,420	10,890	48,790	107,400	120,900	106,800	59,319	4,546	1,419	260	155	449
(WY)	(1963)	(1951)	(1956)	(1997)	(2017)	(1983)	(2006)	(1952)	(1967)	(2016)	(2015)	(2019)
Min	.000	2.19	.92	2.43	.88	3.55	.083	.55	.53	.000	.000	.000
(WY)	(1983)	(1960)	(1977)	(1977)	(1977)	(1977)	(1976)	(1977)	(1977)	(1966)	(1966)	(1983)

SUMMARY STATISTICS
	Water Year 2020		Water Years 1946 - 2020
Annual total	16,140
Annual mean	44.1		3,708
Highest annual mean			17,620	1983
Lowest annual mean			1.53	1977
Highest daily mean	762.0	Dec 02	367,000	Feb 20, 1986
Lowest daily mean	9.03	Oct 24	0.0	Jul 11, 1963
Annual 7-day minimum	9.52	Oct 22	0.0	Jul 19, 1963
Maximum peak flow	974^a	Dec 02	374,000^a	Feb 20, 1986
Maximum peak stage	15.30	Dec 02	34.87	Feb 20, 1986
Annual runoff (cfsm)
Annual runoff (inches)
10 percent exceeds	85.8		9,418
50 percent exceeds	29.0		52.0
90 percent exceeds	13.2		2.91

^a Discharge affected by Regulation or Diversion

USGS Water-data graph for site USGS 11453000