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Prior Lake Spring Lake Watershed District

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Swamp Lake Iron Enhanced Sand Filter Project

The Swamp Iron Enhanced Sand Filter (IESF) is an important part of watershed nutrient reduction and preventing nutrients from reaching the downstream County Ditch 13 system, Spring Lake and Prior Lakes. The Swamp IESF is expected to filter, bind with excess nutrients, and remove 89 lbs of Phosphorus per year, and presents one of most cost-effective, and far-reaching solutions in the watershed strategy.

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Waterbodies: Topic:

Buck Stream Stabilization Project

Preventing erosion on 1,300 feet of stream by reconnecting its natural floodplain.

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Waterbodies: Topic:

Prior Lake Outlet Channel Repairs: Bank Erosion Project

Bank erosion repair work has been completed along the channel. Maintenance for vegetation reestablishment is an ongoing project.

Sutton Lake Outlet Project

The Sutton Lake Outlet project constructed a controlled outlet structure at the Sutton Lake Blvd culvert crossing to store stormwater in Sutton Lake.

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Waterbodies: Topic:

Upper Prior Lake Alum Treatment Project

Studies by the Prior Lake-Spring Lake Watershed District determined Upper Prior Lake was impaired/threatened by an excess of phosphorus and recommended that the phosphorus concentration should be reduced by to achieve water quality goals.

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Spring Lake Alum Treatment Project

PLSLWD treated Spring Lake with Aluminum Sulfate (Alum) in 2013, 2018, and 2020.

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Ferric Chloride Treatment Facility Project

The Ferric Chloride Treatment Facility is one of the District's "nutrient reduction powerhouses". Reducing nutrients reaching Spring Lake is essential for preventing algal blooms and other water quality problems.

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Fish Lake Shoreline Enhancement & Prairie Restoration Project

The project enhanced a section of shoreline along Fish Lake behind the Spring Lake Township town hall and implemented a prairie restoration on the north side of the property.

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Sand Point Beach Park Project Project

The Sand Point Beach Park Pond Improvements Project improves the efficiency of stormwater treatment before it enters Prior Lake. The project includes three components: Maintenance & Expansion of the Two Existing Ponds, Iron-Enhanced Sand Filter, and Prairie Restoration.

Raymond Park Restoration Project Project

The restoration project includes buckthorn removal, an oak savanna restoration, beach plant community restoration, shoreline restoration and replacing the existing turf grass with low-maintenance grass.

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Watzl’s Beach Shoreline Restoration Project

The shoreline area at Watzl’s beach was previously dominated by invasive plants and erosion was occurring at the shoreline. As such, the site was in desperate need of restoration.

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Indian Ridge Water Quality Improvement Project

The project will filter out sediments and nutrients from the stormwater that runs off properties and streets in the Indian Ridge Park neighborhood before it reaches Lower Prior Lake.

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Fish Point Park Retrofits Project

The Fish Point Park Retrofit project includes three elements: retrofitting an existing ditch section with in-line iron-sand filters, expanding storage capacity and creating wetland upstream of the ditch, and installing a new predictive control structure in the existing berm.

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Spring Lake Shoreline Restoration Project

Shoreline restoration prevents soil erosion from entering our lake, as well as providing filtration for other pollutants. Native plants provide bank stabilization, water filtration, and habitat improvement. Three main shoreline restoration techniques were used to stabilize these areas: brush bundles, cedar revetment and native plantings with erosion control blanket.

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Arctic Lake Restoration Project Project

This project consists of three components: retrofitting stormwater ponds with iron-sand filters, restoring a wetland, and managing carp.

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CR 12/17 Wetland Restoration Project

The CR12/17 Wetland Restoration Project is an innovative stormwater treatment project intended to improve water quality in Spring Lake.

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Boudin Neighborhood Improvement Project Project

Prior Lake-Spring Lake Watershed District completed retrofit projects on the Boudin neighborhood reconstruction that previously drained untreated to Lower Prior Lake.

Prior Lake Outlet Structure Reconstruction Project

Normal wear and tear on the outlet structure resulted in cracking to the structure and diminishing efficiency. The outlet structure was replaced in 2010.

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