HomeMy WebLinkAbout2025 Lake Edina POI Survey Report2025 Edina Lake (DOW: 27002900, Hennepin County)
Aquatic Vegetation Point Intercept Survey Report
4/26/2025
An aquatic vegetation point intercept survey was completed in Edina Lake on 4/26/2025 for the City
of Edina. Five species of vegetation were sampled during the survey:
• Small pondweed spp (immature growth, couldn’t fully identify)
• Northern watermilfoil
• Chara spp
• Elodea canadensis
• Small duckweed (observed)
The point intercept survey consisted of 100 points. At each site depth was recorded and vegetation
was sampled with a double-sided rake. For every species sampled, an abundance rating was
assigned based on how much was sampled on the rake. The ratings are as follows:
0. Plant species absent
1. Plant species covers <25% of the rake
2. Plant species covers 25-75% of the rake
3. Plant species covers >75% of the rake
This rating scale was taken out of the Minnesota Department of Natural Resources Guidance for
Delineating Aquatic Plants for Management.
Curlyleaf pondweed was not sampled during the 2025 survey of Lake Edina, same as in 2024.
Northern watermilfoil was found at 76% of sites with an average rake abundance of 2.0 at the sites
where it was collected (See figure 1). This was up from 2024.
Small pondweed spp was found at 1% of sites with an average rake abundance of 1 at sites where it
was collected. This was down from 2024 in both metrics.
Chara spp was found at 6% of sites with an average rake abundance of 1.7 at the sites where it was
collected (See figure 3).
Elodea canadensis was found at 9% of sites with an average rake abundance of 1 at the sites where
it was collected (See figure 2).
Figure 1: Edina Lake northern watermilfoil distribution and abundance
Figure 2: Edina Lake Elodea canadensis distribution and abundance
Figure 3: Edina Lake Chara spp distribution and abundance