Alviso Marina County Park Boat Launch
- Type
- County park boat launch on the bay
- Location
- Mill Street, Alviso, San Jose
- Ramps
- Two concrete ramps, two floating docks
- Route
- About 4 miles down Alviso Slough to the bay
- Boat launch
- Kayak & SUP
- Wildlife & birding
- Restrooms
About this boat ramp
Alviso Marina County Park in the Alviso neighborhood of San Jose is Santa Clara County's main launch onto San Francisco Bay.
On the water
Two concrete ramps and two floating docks serve power boats and paddlers. From the launch it's about 4 miles down Alviso Slough to the open bay, through the salt marshes of the wildlife refuge.
Tides and wildlife
Low tides expose mudflats that can strand boats, so check the tide chart at the launch. Stay off levees and refuge land, keep clear of Ridgway's rail habitat and harbor seal haul-outs, and expect waterfowl hunting in the refuge from about October to January.
Getting there & access
Getting there
The park is at the end of Hope Street and Mill Street in Alviso, at the south tip of San Francisco Bay.
Tides
Plan around the tide. At low water the slough and mudflats can strand boats; a tide chart is posted at the launch.
After hours
Launching or retrieving outside park hours needs a county annual gate key.
- Hours
- 8 a.m. to sunset; gate key for after hours
- Parking
- Free, including trailer spaces
What's here
Launch
Two concrete ramps and two floating docks
Kayaking
Paddlers and power boats share the launch
Restrooms
Accessible restroom near the entrance
Wildlife
Salt marsh and bird habitat in the wildlife refuge
Rules & official resources
- California Boater Card required for all operators of motorized vessels, regardless of age, since January 1, 2025dbw.parks.ca.gov ↗
- Do not land on levees, wetlands or refuge land; give harbor seal haul-outs about 500 feet in pupping seasonsfbaywatertrail.org ↗
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