09/15/2025
9/13/25 WLA Meeting Minutes
1. Meeting was called to Order
2. Pledge of Allegiance
3. Speakers: Natalie Erler (Sawyer County AIS Coordinator), and Megan Sorenson (Community Developer Specialist).
Lake Health Assessment and Management Planning
· Invasive species were identified in Lake Loretta and Barber last summer.
· A collaborative effort was initiated with board members and consultants to address the issue.
· Grants were applied for to assess lake health and determine potential management actions, beginning with data collection this spring.
· Plans involve understanding lakes, including water quality and watershed health.
· Secchi disk measurements determine water clarity by lowering a black and white disk until it's no longer visible.
· Phosphorus, nitrogen, and chlorophyll levels are measured to assess water quality and algae presence.
· Baseline water quality measurements are taken by volunteers monthly from June to August.
· Point intercept surveys were conducted using a map of Loretta, Barber, and South Barber. A rake is used to collect plants at designated points, and each species is identified and rated on a scale of 1 to 3 based on coverage.
Lake Loretta
· A point intercept survey was conducted on Lake Loretta to study aquatic species.
· The initial survey in May revealed 13 species with an average rate fullness of 1.6, including curly pond w**d at 85% of sites.
· A follow-up survey in August identified 16 species with a rate fullness of 1.5, noting a decrease due to the disappearance of curly leaf pond w**d, which was found at 77% of sites.
· Plant growth patterns are observed, noting early-season growth potentially dying back later.
· Water clarity readings, taken bi-weekly, average between 2 and 4 feet.
· Chlorophyll-a levels are normal for the season, but a spike in algal biomass was detected, possibly due to an algal bloom or compromised sample.
· The trophic state index (TSI) incorporates various water quality parameters into a formula.
· The TSI scale ranges from less than 30 to greater than 80, based on chlorophyll, biomass, water clarity, and total phosphorus.
· The current state is eutrophic, which is typical for lakes in this area, with a possible high chlorophyll level.
Barber Lake
· Water clarity monitoring was conducted for Barber Lake, while point intercept surveys were performed on both Barber Lake and South Barber Lake.
· Water clarity in Barber Lake ranged from 6.25 feet to 10 feet, indicating stained water, though less dark compared to Loretta Lake.
· Water quality analysis of Barber Lake revealed normal levels of chlorophyll (9.7) and phosphorus (.009 mg/liter).
· The lake is transitioning between eutrophic and mesotrophic states, which is considered normal.
· A survey found 17 total species, indicating good lake health, with Eurasian watermilfoil present at only 20% of sites.
· South Barber showed no Eurasian watermilfoil, but the water was notably stained.
· Native species richness is considered, representing the number of plants present.
· Plant resilience is evaluated on a scale of 0 to 10, where higher values indicate better tolerance to environmental stressors like pollution.
· Tolerant plant species like whom tail or Duckw**d indicate low value in certain environments.
· Fluorescent quality index combines values to assess the health of a plant community.
· The number of species for south Barber lake was 7, indicating low species diversity.
Plant Community Health Assessment
· Loretta Lake and Barber are in a good condition regarding plant health.
· The plant community south of Barber is declining, while Barber shows better health than expected.
· Low plant values in south Barber are not concerning due to it being a dark water lake.
Addressing Curly Leaf Issues in Lake Loretta
· A combination of DNR regulations and lake association actions will determine the solution.
· Chemical treatments are unlikely due to the flowing water, necessitating further discussion and baseline data.
· Focus is on gathering opinions and data related to lake conditions.
· Continuation of data collection for water clarity and sampling is planned as a next step.
Ecological Data Analysis and Public Input
· Chlorophyll and phosphorus studies are planned for the next summer.
· Point intercept surveys for plant identification will be conducted every five years.
· Data will be summarized into a report, followed by public input meetings to gather opinions.
Aquatic Plant Management Strategy
· The initial section will present background information.
· Management options such as herbicides or mechanical harvesting will be discussed as primary methods for aquatic plant control.
· Public input meetings will help determine a 'menu' of options based on the extent of curly leaf presence, triggering specific actions like mechanical harvesting.
· Chemical treatments are likely unsuitable due to water flow.
· Mechanical harvesting or manual removal are favored management techniques due to DNR's preference.
· Waterfront property owners can manually remove plants without a permit within a 30-foot radius of docks or swimming areas by hand pulling or raking.
Mechanical Harvesting Cost Analysis
· Discusses the financial aspects of mechanical harvesting, including permit applications and costs.
· Lake associations apply for permits on behalf of property owners, who may then contract for individual harvesting.
· Permit costs are initially $30, with an additional $10 per acre, up to a maximum of $300; grants may help cover mitigation costs.
· Lake associations can pursue control grants for invasive species mitigation.
· The DNR offers funding to associations for mitigating invasive species.
4. Secretary minutes from August 9 accepted and approved.
5. Treasure Report: was read. The picnic fundraiser brought in funds.
6. Old Business
· Fish stocking planned late September/early October.
· Lake reps still needed for Barber, Blaisdell, Bluegill, and Fish Trap Lakes. Please let us know if you would be interested in signing up!
· “Kids’ Life Vest Box” project postponed until spring.
7. New Business Pat’s Landing fundraiser (meat raffle/bingo) scheduled Sept. 15.
· The group discussed the possibility of kayak prize for next years raffle.
8. Lake Updates
· Secchi disk monitoring updates shared
· Loons — multiple sightings on Barber, Winter, and Island Lakes.
9. Next Meeting
· Next meeting set for October 25 (moved from Oct. 11).
· Children’s Christmas Store project will be discussed at the next meeting.
10. Adjourn
Respectfully submitted,
Denise Brendel – WLA Secretary
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