Rush Lake Ice Breaks Up as Spring Warmth Returns to Otter Tail County

Marlys Simpson stepped outside her north shore home to check on Rush Lake and landed on one word to describe what she found: "Shocked."

Simpson has watched ice go out on the 5,337-acre lake for four decades, long enough to set a baseline for what the season normally brings. This was not that. "When I got up and saw it, I thought, well, maybe something will happen, and then as it progressed, I thought, uh oh," she said.

The culprit was a combination of warmth and wind. Temperatures climbed into the 60s for the first time since November, while south winds gusted to 40 mph, pushing massive slabs of ice across the lake and stacking them against the north shoreline beaches. The Otter Tail River, which flows into Rush Lake through an inlet on the north shore, had already been working at the ice from below as the warmup built. More is expected to push ashore as melting continues.

WDAY-TV deployed a drone over the lake to capture the scale of it, and the aerial footage confirmed what Simpson described: mountains of ice piled along the north side beaches in formations that made 40 mph wind physics visible from the air.

The speed of the change is striking. Rush Lake carried 13 to 15 inches of ice as recently as December 29, 2024. Three months later, gusts were reshaping the shoreline.

Conservation Officer Tricia Plautz of Otter Tail County is urging anglers to treat the remaining ice as unsafe. With above-freezing temperatures becoming more consistent, she advised extreme caution for anyone still attempting lake access on ice. For those targeting Rush Lake's walleye and northern pike, the message is to wait for open water before heading to either of the lake's two public landings: one off MN HWY 108 on the west end and one on the east side.

The timing matters for more than fishing. The Otter Tail Lakes Country Association, the regional tourism body with more than 37,500 social media followers, shared footage of the changing conditions as resort operators began tracking when boat access would return. On Otter Tail Lake, the county's largest and part of the same Otter Tail River Chain, the median ice-out date runs around April 16th based on records going back to 1950. Rush Lake's early-April melt puts it ahead of that benchmark; the earliest ice-out on record for Otter Tail Lake fell on March 16th, while the latest arrived May 13th, 2013.

Otter Tail County holds 1,048 lakes, more than any other county in the United States, and the ice-out season rarely delivers the same spectacle twice. This spring on Rush Lake, 40 mph winds and walls of ice stacked on the north beach confirmed it had arrived on its own terms.