HomeMy WebLinkAbout2025 Mirror Lake POI Survey Report2025 Mirror Lake (DOW: 27005500, Hennepin County)
Aquatic Vegetation Point Intercept Survey Report
4/26/2025
An aquatic vegetation point intercept survey was completed in Mirror Lake on 4/26/2025 for the City
of Edina. Three species of vegetation were sampled during the survey:
• Curlyleaf pondweed
• Coontail
• Elodea canadensis
The point intercept survey consisted of 95 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 the most abundant plant species in Mirror Lake (See figure 1). It was found
at 6% of sites with an average rake abundance of 1.2 at sites where it was collected. Both metrics
were down from 2024.
Coontail was found at 3% of sites with an average rake abundance of 1 at the sites where it was
collected (See figure 2).
Elodea canadensis was found at 1% of sites with an average rake abundance of 1 at the sites where
it was collected.
Figure 1a: 2025 Mirror Lake curlyleaf pondweed distribution and abundance
Figure 2b: 2024 Mirror Lake curlyleaf pondweed distribution and abundance
Figure 3: 2025 Mirror Lake coontail distribution and abundance
Figure 4: 2025 Mirror Lake Elodea canadensis distribution and abundance