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Parks & Recreation

Posted on: December 5, 2023

Caution: Thin Ice at Central Park

A "Thin Ice" sign at Lake Bennett in Roseville's Central Park.

Central Park visitors need to be aware of the potential for thin ice on Bennett Lake this winter.

The City of Roseville has updated and reactivated its underwater aeration system, the bubbler, to support the fish population throughout the winter months by increasing the amount of dissolved oxygen in the water.

“Historically, we’ve run the waterfall year-round to boost dissolved oxygen levels in Lake Bennett,” said Environmental Manager Ryan Johnson.  

The waterfall alone can’t always keep up. Adding the bubbler, which will run year-round, will help support the lake’s sunfish, bluegills, and bass population.

A picture of thin ice at Lake Bennett.The city works closely with the Minnesota Department of Natural Resource and the Ramsey-Washington Metro Watershed District to monitor lake conditions.  

DNR regulations require “thin ice” signs every 100 feet around public waters when aeration systems are in operation. 

Johnson said residents should avoid walking on the ice at Bennett Lake and any body of water in the city due to the potential of thin ice spots. 

“No water, especially in the metro area, is safe in winter,” Johnson said. “That’s because we have storm sewers emptying into them, which causes water movement and can carry chloride laden water as a result of road salt which changes the water chemistry. There are springs in some of the lakes and ponds which can also result in thin spots.”  

Originally a wetland, Bennett Lake developed into the water feature visitors see today in the 1960s and 70s. As the city grew, the network of storm sewers was developed and drained into Bennett.  

Bennett Lake measures 28 acres today with a maximum depth of 9 feet. It’s a notable attraction of Central Park with a fishing pier and a walking and biking trail following its shoreline.  

In the past, the DNR has stocked Bennett Lake with Walleye fingerlings, Channel Catfish yearlings, and large adult Bluegills.

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  1. Roseville City Hall

  2. 2660 Civic Center Drive

  3. Roseville, MN 55113


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    8:00 a.m. - 4:30 p.m.


  5. Phone: 651-792-7000

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