California / Sacramento-SanJoaquinDelta-Three Mile Slough /

Brannan Island SRA

Boat ramp · on Sacramento-SanJoaquinDelta-Three Mile Slough · near Rio Vista · California

Golden mussels

California Department of Fish and Wildlife has detected golden mussels (latest detection 2025) in the water at this launch. Clean, drain and dry your boat, trailer and gear before you leave, and do not move water, plants or live bait to another water.

California Department of Fish and Wildlife · checked October 18, 2026

Past algal blooms

Harmful algal blooms reported on Sacramento-SanJoaquinDelta-Three Mile Slough 430 m from this launch (state reports compiled by U.S. EPA): 2018, 2021 and 2022.

state reports compiled by U.S. EPA · checked October 18, 2026

Status not reported No closure has been posted for this launch, but its agency does not publish open or closed status. Check with the managing agency before you tow.

At the launch

Type
Boat ramp
Ramp lanes
10
Trailer parking
100 spaces
Restrooms
Yes
Tidal
Yes
Website
parks.ca.gov
Coordinates
38.11531, -121.68844

Directions (Google) Apple Maps

Conditions

Tides

Predicted highs and lows at NOAA's Threemile Slough station, 0.9 mi from this launch, in local time above MLLW. Predictions, not observations: wind and weather move the real tide. Full predictions at NOAA.

Tide predictions, Sun Oct 18 to Sat Oct 24
Sun Oct 18 Low 4:59 am 0.2 ft · High 11:29 am 3.0 ft · Low 4:16 pm 1.7 ft · High 9:08 pm 3.2 ft
Mon Oct 19 Low 5:52 am 0.2 ft · High 12:18 pm 3.1 ft · Low 5:31 pm 1.5 ft · High 10:35 pm 3.1 ft
Tue Oct 20 Low 6:38 am 0.1 ft · High 1:00 pm 3.1 ft · Low 6:36 pm 1.2 ft · High 11:58 pm 3.0 ft
Wed Oct 21 Low 7:17 am 0.1 ft · High 1:35 pm 3.3 ft · Low 7:32 pm 0.9 ft
Thu Oct 22 High 1:04 am 3.1 ft · Low 7:51 am 0.2 ft · High 2:03 pm 3.4 ft · Low 8:22 pm 0.6 ft
Fri Oct 23 High 2:01 am 3.1 ft · Low 8:21 am 0.3 ft · High 2:26 pm 3.6 ft · Low 9:09 pm 0.3 ft
Sat Oct 24 High 2:54 am 3.1 ft · Low 8:50 am 0.6 ft · High 2:46 pm 3.9 ft · Low 9:55 pm 0.1 ft

On Sacramento-SanJoaquinDelta-Three Mile Slough

River in California. All launches on Sacramento-SanJoaquinDelta-Three Mile Slough.

Community

Where people who use Sacramento-SanJoaquinDelta-Three Mile Slough talk about it.

Nearby launches

Sources

Why it is listed as public: listed by California Boating Facilities (Division of Boating and Waterways survey, CDFW Fishing Guide). Something wrong, or is this launch private? Send a correction; it goes to a person.