You'll find Bayside/Joinville Park Boat Ramp on Seal Slough in San Mateo. It's a public boat ramp. The next public ramp is Kite Launch 3rd Ave Upper in San Mateo, about under 1 mile away.
| Type | Public boat ramp |
|---|---|
| Address | San Mateo, CA |
| Water | Seal Slough |
| Park | Bayside/Joinville Park |
| Launch fee | not in our data, check the signs at the launch |
Official California access sites: California State Parks, Division of Boating and Waterways.
Compare all 3 launches on Seal Slough. Seal Slough overview
More in our guide: How to launch a boat from a trailer, plus ramp etiquette.
Illustration Bestseller Attwood 7524A7 snap-handle drain plug The forgotten drain plug is the classic ramp mistake. A spare in the glove box saves the day. View on Amazon 
Illustration Top pick Bungee dock lines with quick connect, shock absorbing Clip on in seconds while your partner parks the trailer. The bungee keeps the boat off the dock in wakes. View on Amazon 
Illustration Master Lock trailer coupler lock (fits 1-7/8", 2", 2-5/16") Your trailer sits alone in the ramp lot all day. A coupler lock keeps it where you left it. View on Amazon We haven't tested these ourselves; we chose them by size and specs. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Check the current price on Amazon.
Illustration The classic ramp mistake
A spare snap-handle plug in the glove box, and the full launch checklist that keeps the line moving.
Launch checklist
Illustration Loading the boat
How to winch your boat on in a minute, and the small upgrades that make the drive home safer.
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Bayside/Joinville Park Boat Ramp is in San Mateo, California. We only have the map location of Bayside/Joinville Park Boat Ramp from OpenStreetMap, and the directions link goes straight to it.
It gives you access to Seal Slough.
We don't have fee information for Bayside/Joinville Park Boat Ramp, but many city and county ramps are free, while state parks and Corps lakes often charge.
Most likely, if you launch from the side of Bayside/Joinville Park Boat Ramp and don't block the lane. The nearest dedicated kayak launch is Eden landing Kayak Launch in Hayward, about 9.7 miles away.
Kite Launch 3rd Ave Upper in San Mateo (under 1 mile), Kite launch 3rd Ave Lower in San Mateo (under 1 mile) and Parkside Aquatic Park Boat Ramp in San Mateo (under 1 mile).
Boat Ramps Nearby