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A five gallon bucket in the grass filled with large invasive goldfish

PSA: Keep Bubbles in the Bowl

Goldfish are an aquatic invasive species that hurt water quality. It is critical that unwanted aquarium fish or plants are never dumped into lakes, creeks, or ponds.

Small brown beetle on a leaf with holes from eating

The Hungry, Hungry Beetle

To control the spread of invasive Purple Loosestrife along pond and lake shorelines, a tiny and very hungry beetle has been recruited to help.

House with native plant garden in the foreground

Newsletter | Spring 2026

Grants for plants, upcoming planting workshops, Ravine Lake Channel stabilization, citizen science opportunities, and draft Watershed Management Plan.

Hands holding a oversized goldfish

SWWD Partners on Goldfish Management with the City of Woodbury

Goldfish are a non-native, invasive species that interrupt normal ecosystem processes when they become established in a waterbody. To protect our lakes, goldfish must be removed from stormwater ponds before they reach Powers Lake. The South Washington Watershed District and the City of Woodbury are committed to protecting our lakes.

Aquatic plants underwater

Spring AIS Treatments

SWWD is continuing efforts to control growing infestations of aquatic invasive species (AIS) like curly-leaf pondweed (CLP) and Eurasian watermilfoil (EWM) in the 2026 growing season. Spring treatment will be conducted at Markgrafs and Wilmes (north basin) for curly-leaf pondweed.

Purple flower near body of water

Become a Beetle Parent to Control Invasive Species

Have you seen this purple flower before? This is Purple Loosestrife, and while it may look appealing, it is an invasive plant causing ecological havoc. Purple Loosestrife (Lythrum salicaria L.) is a highly invasive plant that is often found along shorelines.

Aerial map of stream

Ravine Lake Channel Stabilization Project

This spring, SWWD will undertake a project to stabilize the stream channel to address erosion, create better flow, prevent future erosion, and re-establish native vegetation throughout the stream.

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