CNRFC - Hydrology - Observed River/Reservoir Conditions

YOLO BYPASS - LISBON (LSBC1)

Latitude: 38.48º N	Longitude: 121.59º W	Elevation: 20 Feet
Location: Yolo County in California		Bulletin Group: Lower Sacramento		River Group: Lower Sacramento

Action/Monitor: 13.0 Feet

Minor Flood: 19.0 Feet

Moderate Flood: 26.0 Feet

Major Flood: 31.1 Feet

Plot Type:

Observed Data Credit
	Raw streamflow data is provided by the California Department of Water Resources. View California Department of Water Resources Data for this station location.

Historical Stage/Flow Data
Note: Water Year 2025 is currently showing peak daily mean values. These will be updated to instantaneous peaks in the coming months.
Water Year	Peak Discharge (cfs)	Stage (feet)	Date
Most Recent 5 Years
2025	123,389	20.69	Feb 10, 2025
2024*	56,800	17.50	Feb 24, 2024
2023	76,100	18.46	Jan 16, 2023
2022	1,160	8.30	Dec 31, 2021
2021	659	7.22	Jan 28, 2021
Historical High Stage/Flow Events (Period of Record - January 1914 to Present) - Ranked by Flow
1986	564,800	27.50	Feb 20, 1986
1997	507,400	27.18	Jan 3, 1997
1965	323,100	24.69	Dec 25, 1964
1970	273,500	23.90	Jan 25, 1970
1956	246,000	23.40	Dec 24, 1955
1963	204,800	22.64	Feb 02, 1963
* Incomplete record for the year ** Datum changed from NGVD29 to NAVD88 on 10/01/2006. The difference is -1.06 ft and must be applied to all data before date to convert to NAVD88

Location Photographs
Upstream Photo	Gage House Photo	Downstream Photo

ESRI™ Locator Map

Flood Impacts
31.1 Feet	Stages above 31.1 feet result in flooding outside levees. Top of east yolo bypass containment levee.
26.2 Feet	Water is up to the steps of Skyrakers Duck Club buildings.
25.0 Feet	Top of the Mound Farms levee protecting the housing area.
22.5 Feet	Kerney Ranch house floods.
19.0 Feet	Mound Farms and Senator Outing Duck Club are flooded.
16.0 Feet	Glide In Ranch is completely flooded.
15.0 Feet	County Road 155 is flooded west of the Golden Sprig Duck Club.
14.0 Feet	Skyrakers Duck Club ponds begin to flood.
13.0 Feet	Flood waters extend approximately 1 mile west of the tow drain downstream of the Lisbon gage.
12.0 Feet	County Road 107 is flooded.
11.0 Feet	Glide In Ranch & Mound Farms begin to flood.
10.5 Feet	Local roads on the east side of the Yolo Bypass south of the I-80 causeway are flooded.
9.5 Feet	Yolo Bypass flooding extends 1/4 mile west. No structural damage is occurring.

Official 7 Day National Weather Service Forecast (CAZ017)

Today: Cloudy. Widespread fog and locally dense early in the morning, then areas of fog and locally dense late in the morning. Patchy fog in the afternoon. A slight chance of rain in the late morning and early afternoon. A chance of rain late in the afternoon. Highs 46 to 52. Light winds.

Tonight: Rain. Patchy fog. Lows around 47. Light winds.

New Years Day: Patchy fog in the morning. Rain. Not as cool. Highs 54 to 60. Light winds becoming southeast around 10 mph in the afternoon. Gusts up to 20 mph.

Thursday Night: Cloudy. Rain in the evening, then a chance of rain after midnight. Lows around 52. Southeast winds 10 to 15 mph.

Friday: Cloudy. A chance of rain in the morning, then rain likely in the afternoon. Highs 53 to 59. Southeast winds 10 to 15 mph. Gusts up to 25 mph in the afternoon.

Friday Night: Rain. Lows around 52.

Saturday: Rain showers and a slight chance of thunderstorms. Highs 51 to 57.

Saturday Night: Rain showers and a slight chance of thunderstorms. Lows around 49.

Sunday: Rain likely. Highs around 52.

Sunday Night: Rain showers likely and a slight chance of thunderstorms. Lows around 47.

Monday: Rain likely. Highs around 51.

Monday Night and Tuesday: Mostly cloudy with a chance of rain. Lows around 45. Highs around 52.

Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Sacramento Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.

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