For lakes and wetlands, a permit is needed for most work that occurs below the Ordinary High-Water Line (OHWL) or the 100-year Flood Elevation. Typically the OHWL is located where aquatic vegetation changes to predominantly terrestrial or upland vegetation, but this isn't always the case. The 100-year Floodplain Elevation is a set elevation for each lake.
For information about the OHWL or 100-year Flood Elevation of a lake, please contact RPBCWD or the Minnesota DNR.
Below is sample of shoreline work that requires a permit. This list is NOT all inclusive. Contact RPBCWD to see if your proposed project requires a permit.
Every major lake within the watershed district has a set 100-year flood elevation. Download a map of the major lake 100-year flood elevations or see the table below.
|LAKE NAME||100-YR FLOOD ELEVATION|
|Purgatory Creek Recreation Area||825.78|
Use the FEMA Flood Map Service Center to find a flood map.
District Rules & Permits
RPBCWD has its own rules, separate from county and city rules and ordinances. Learn about rules and how to apply for a permit.Learn more
The Minnesota DNR regulates aquatic plants including their removal. Visit their Aquatic Plant Management Program webpage for more information including if you need an aquatic plant permit.
RPBCWD chemically treats some lakes to control aquatic invasive species (AIS) including Curlyleaf Pondweed and Eurasian Watermilfoil. Click the link below to learn about the treatment schedule for the current year.Learn more
Apply for a Natural Shoreline Restoration Grant
RPBCWD offers generous cost-share grants for shoreline restorations! Residential property owners can get up to 75% of cost up to $5,000. Other property owner types are also eligible.Learn more about grants