Do I need a permit to install a fountain?

A permit from the Minnesota Department of Natural Resources is required to operate an aeration system on public waters in Minnesota.

https://www.dnr.state.mn.us/eco/lakeaeration

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1. The surface of my lake or pond appears green. What is it?
2. Are motor boats allowed on lakes, ponds, and streams?
3. Does my dock need a permit?
4. Can swimming pool water be pumped into the street and/or the storm sewer?
5. What is done to control mosquitoes?
6. I have new sod or recently seeded my lawn. Can I water it daily?
7. Do residential lakeshore property owners pay higher taxes than non-lakeshore property owners?
8. Who owns the lake bed?
9. Who manages the flow of Minnehaha Creek?
10. Do I need a permit to install a fountain?