Every Public Boat Launch on Lake Minnetonka (and Which One to Use)

Grays Bay is the best all-around public launch on Lake Minnetonka. It is the lake's busiest access for a reason — it has the most lanes, the most trailer parking, and permanent slips, all managed jointly by the City of Minnetonka and the MN DNR.

The Grays Bay numbers: three launch lanes, 29 permanent slips, parking for 112 trailer rigs, plus 21 vehicle-only spots. That is more launch capacity than any other single access on the lake.

Grays Bay sits at the far east end of the lake, right by the Grays Bay Dam that regulates the outlet into Minnehaha Creek. That east-end location is convenient if you are coming from Minneapolis or the eastern suburbs and want the fastest ramp-to-water start.

There are six main public accesses on Lake Minnetonka, spread around the lake so you can pick the one closest to where you want to boat. Here they are with lane counts and trailer parking:

- Grays Bay (City of Minnetonka / MN DNR): 3 launch lanes, 29 permanent slips, 112 trailer spots plus 21 vehicle-only spots — the busiest and largest.

- Lake Minnetonka Regional Park (Three Rivers, near Smithtown Bay): 2 ramps, 55 trailer spaces, 100 vehicle spaces.

- North Arm (Mound): 2 ramps, 51 trailer spaces.

- Carsons Bay (Deephaven): a small ramp with 2 lanes and 17 trailer spaces, on a no-wake bay.

- Surfside on Cooks Bay: a launch in downtown Mound.

- Spring Park: a ramp on Shoreline Drive.

The three big ones — Grays Bay, Lake Minnetonka Regional Park, and North Arm — carry the most trailer parking, so they are your safest bet on a crowded day.

No, there is no launch fee at the public Lake Minnetonka accesses — with one caveat. The launch itself is free at ramps like Grays Bay, North Arm, Carsons Bay, Surfside, and Spring Park.

The exception is a ramp that sits inside a park requiring a vehicle permit. Lake Minnetonka Regional Park is part of the Three Rivers Park District, so any park entry or permit rules apply there even though the launch is public.

The practical takeaway: budget for a park vehicle permit only if you launch at the regional park. Everywhere else, you are trailering in for free.

If your destination is Big Island or the deep water of the Lower Lake, launch from the east or south side of the lake rather than the far western arms. Big Island sits off Orono in the middle of the lake, and the Lower Lake is the eastern basin.

Grays Bay and Carsons Bay both put you on the Lower Lake side, which is the shorter, more direct run to Big Island — the lake's signature party anchorage. On a typical summer weekend Big Island draws around 100 boats, and on the Fourth of July it can swell to 400 to 500 boats tied off around it.

The Lower Lake is also where the deepest, clearest water is: Lower Lake North exceeds 90 feet deep and Lower Lake South exceeds 80 feet. If you are an out-of-towner who wants the postcard version of the lake in one trip, start at Grays Bay and head for the Big Island and Lower Lake water.

The Lake Minnetonka Conservation District (LMCD) is the multi-city agency that governs the lake, and its core speed and distance rules apply to every boat regardless of where you launched.

The rules you have to know before you throttle up:

- 5 mph / minimum-wake limit within 300 feet of any shoreline.

- Stay 150 feet away from docks, swimmers, anchored boats, and dive flags.

- For the 2026 season the LMCD kept the existing 300-foot wake-boat buffer, declining a push for a stricter 600-foot distance and 20-foot minimum depth for wake surfing. (A University of Minnesota study found wake boats stir up lakebed sediment unless operated in water at least 20 feet deep, which is what fuels that debate.)

If you are renting a boat rather than trailering your own, note that as of August 2024 the LMCD requires rental-watercraft operators to obtain an LMCD license and pass a Hennepin County Water Patrol inspection.

Get to the ramp early. On peak days — the Fourth of July and summer weekends — the trailer lots fill first thing in the morning, and Grays Bay's 112 spots and the regional park's 55 can be gone well before midday.

A few peak-day tactics that work:

- Launch at first light, or come back late afternoon after the morning crowd has cleared.

- Spread out: if Grays Bay is full, North Arm in Mound (51 trailer spaces) or Lake Minnetonka Regional Park (55 trailer spaces) give you the next-largest lots.

- Expect Big Island to be at its fullest on the Fourth — 400 to 500 boats — so plan your anchoring and your exit accordingly.

Carsons Bay's 17 trailer spaces fill fastest of all, so treat the small no-wake-bay ramps as backups, not your holiday-morning plan.