How to Use a Boat Launch Ramp in California

A smooth launch is mostly preparation. Do everything you can in the staging area, spend as little time on the ramp as possible, and leave the water clean, drained and dry. California also has legal basics to cover before you tow, and many ramps add their own rules.

Paperwork before you leave home

• California Boater Card: since January 1, 2025, every operator of a motorized vessel needs one, according to the Division of Boating and Waterways (DBW).
• Mussel Fee sticker: owners of motorized recreational vessels used in fresh water must display a current sticker from the DMV. Boats used only in marine waters are exempt.
• Local rules: check the ramp's page for permits, inspection programs, hours and parking limits (see "Know before you go" below).

Step by step at the ramp

1. Prep in the staging area. Load gear, put in the drain plug, remove tie-downs except the bow strap, attach dock lines and fenders, and check the engine is tilted up. Don't do this on the ramp itself.

2. Launch. Wait your turn, back down until the boat floats or is ready to slide off, and have one person hold the bow line from the dock. Release the bow strap only once the stern is in the water.

3. Clear the ramp and dock. Move the boat to the end of the boarding float or away from the lane so the next boater can launch. Keep it to 5 mph near docks and swimmers: DBW sets 5 mph as the maximum within 100 feet of a bather and within 200 feet of a bathing beach, swimming float, diving platform or lifeline.

4. Park. Pull out and park in a marked car-and-trailer space. Pay and display any parking receipt.

5. Retrieve. Bring the boat to the float, fetch the trailer, then back down and winch or drive the boat on following the ramp's posted rules. Pull up to the staging area to strap down and unload.

6. Clean, Drain, Dry. Before you leave, clean plants, animals and mud off the boat, trailer and equipment; drain ballast, bilge, live-wells and other water-holding devices on land, never back into the waterway; and dry everything before launching in another water body. The Department of Water Resources says golden mussels foul hulls and motors and clog cooling lines, and spread easily on boats.

Know before you go

Real examples from our ramp and lake pages:

Inspections and quarantines

• Folsom Lake: trailered or motorized boats must be inspected and either quarantined for 30 days under a seal or decontaminated for a green seal (program effective April 14, 2025). Hand-launched, non-motorized craft are exempt from quarantine.
• New Melones Lake: gas-powered boats need a 30-day out-of-water quarantine with a wire and red seal, or a decontamination wash by reservation (announced April 14, 2026).
• Lake Casitas: every vessel must pass inspection, with a 35-day quarantine.
• Clear Lake State Park Boat Ramp: visitor boats and trailers need Lake County Visitor Mussel Stickers, with screening before the first launch in every calendar month.
• Lake Tulloch: bring your registration, mussel sticker and Boater Card to inspection.
• Silverwood Lake: after golden mussels were found (September 2025), outbound inspections are required and drain plugs must be pulled before exiting.

Launch permits

• Castaic Lake: valid launch permits are required for all boats, including float tubes.
• Big Bear Lake: every vessel needs an inspection and a Lake Use Permit displayed on the vessel.

Hours

• Long Beach Marine Stadium: 8 a.m. to dusk, boats up to 23 feet, no overnight parking.
• Hogback Island: sunrise to sunset, year-round.
• Marina del Rey: open 24 hours.

Trailer parking

• Marina del Rey: trailers must stay attached to a tow vehicle; no more than 7 days of parking in any 30-day period.
• Santa Barbara Harbor: trailers park in yellow diamond stalls, for up to three consecutive 24-hour periods.
• Port of Redwood City: free trailer parking up to 72 consecutive hours.
• Ventura Harbor: stays beyond four days need a special permit.

Ramp courtesy

These aren't laws, just good habits: keep the line moving, help a struggling neighbor, don't block lanes while you chat, and be ready before you back down.

This guide is general information, not legal advice; rules change, so check the linked pages and posted signs.