Trillium Lake (OR): Motor & Boating Rules

Rules at a glance

What this means in practice

A no-motor listing is the strictest class on the books. It is not just about gasoline: mounting any motor, including a small electric trolling unit, puts you outside the rule on Trillium Lake. Whether a motor may stay attached-but-unused varies by agency — ask Oregon State Marine Board before assuming.

Why do agencies zero out motors entirely? Usually the lake is small, shallow, or managed as quiet fishing water, where even trolling-motor wakes and noise change how it fishes. The payoff for you: flat water, no engine traffic, and fish that see less pressure.

Worth knowing about Trillium Lake: ORS 830.180(1) table entry (Clackamas County). Electric motors are allowed on ORS 830.180 lakes only if the Marine Board adopts an authorizing rule (ORS 830.180(3)); no such rule exists for Trillium Lake in OAR 250-020-0033, so all motors are prohibited. Exemptions only for public bodies with jurisdiction and the federal government.

Common mistakes on No motors water

Arriving with the motor still bolted on. Even if you never start it, an attached motor can be treated as a violation here. Pull it at home, not at the ramp.

Trusting an old fishing forum thread. Motor listings change by rulemaking, not rumor. The source document linked below is current as of our verification date — read that instead.