What "Electric Motors Only" Really Means on a Lake
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Quick answer
"Electric motors only" bans the fuel, not the boat. Gasoline and diesel engines are prohibited; electric trolling motors are allowed, on most lakes at any thrust rating. The standard legal setup is a transom-mount trolling motor (30–55 lb thrust) with a deep-cycle battery. Thrust is not horsepower — 55 lb of thrust equals roughly 0.6 hp. Rare local rules cap electric motor size, so verify per lake.
What the rule actually regulates
Electric-only rules exist to keep small fishing lakes quiet, wake-free, and clean. The regulation targets the propulsion source: if the motor runs on electricity, it complies; if it burns fuel, it does not. That single distinction answers most follow-up questions. Hull type does not matter — jon boats, canoes, kayaks, inflatables, and full-size bass boats are all fine, as long as what pushes them is electric. Sail and paddle are, of course, also fine.
The wording differs across states — Pennsylvania's Fish & Boat Commission lakes say "electric motors only," Kentucky lists waters where "combustion engines are prohibited," Virginia's department lakes prohibit "boats with gasoline motors" — but the practical effect is the same. Each lake page on this site quotes the controlling wording via its official source link.
The mounted-but-unused gas motor problem
The one genuinely tricky case: arriving with a gas outboard on the transom and intending not to use it. Agencies split. Some explicitly allow a gas motor to remain mounted if it stays off (sometimes requiring it trimmed out of the water); others prohibit even having it attached. Because getting this wrong can void your trip at the ramp, our lake pages flag it whenever the source addresses it — and when in doubt, take the gas motor off at home.
Thrust vs. horsepower: sizing a trolling motor
Trolling motors are rated in pounds of thrust, not horsepower, and the two do not convert cleanly. As a rough mechanical equivalence, 55 lb of thrust corresponds to about 0.6 hp — but the useful comparison is to your boat, not to gas engines. The common rule of thumb: at least 2 lb of thrust per 100 lb of loaded boat weight.
| Loaded boat weight | Suggested thrust | Typical voltage |
|---|---|---|
| Up to 1,500 lb (kayak, canoe, small jon) | 30–40 lb | 12 V |
| 1,500–2,500 lb (14–16 ft fishing boat) | 40–55 lb | 12 V |
| 2,500–3,500 lb | 55–80 lb | 24 V |
| Over 3,500 lb | 80–112 lb | 24–36 V |
More thrust never violates an electric-only rule — it just moves a heavier hull at the same modest pace. Expect 3–5 mph at full power on a light boat, which suits the fishing character of these lakes.
Batteries and run time
A deep-cycle battery (AGM or lithium LiFePO4) is the other half of the setup — car starting batteries sag and die quickly under trolling loads. Estimate run time as battery amp-hours divided by the motor's draw: a 50 Ah lithium battery on a motor drawing 25 A at half speed gives about two hours continuous, more with intermittent use. Cold water, wind, and battery age all cut real-world numbers, so bring margin — or a paddle, which is good practice on any electric-only water anyway.
Where these lakes are
Agency-owned fishing lakes are the classic electric-only waters. Browse the verified lists by state — for example Pennsylvania, Virginia, and Ohio — or check a specific lake and motor in the motor check tool. Every lake page cites the official regulation and shows its verification date.
Frequently asked questions
Is a trolling motor with more thrust "more illegal" on an electric-only lake?
Usually no. Most electric-only rules regulate the power source, not the thrust rating — an 80 lb thrust motor is as legal as a 30 lb one. A few local rules do cap electric motor size (Minnesota's Brown Lake limits electric motors to under half a horsepower), so check the lake page's notes.
Can I bring my bass boat with a 150 hp outboard if I only use the trolling motor?
It depends on the agency. Some allow a gas motor to stay mounted but unused (often trimmed up); others prohibit having it attached at all. Check the lake page here and its official source, or call the agency.
How long will a deep-cycle battery run a trolling motor?
A rough rule: battery amp-hours divided by the motor's amp draw at your speed. A 100 Ah battery running a motor at 20 A gives about 4 hours of continuous top-speed use — much longer at lower speeds. Cold water and old batteries cut that down.