Do you farm or own cropland in the Hastings Drinking Water Supply Management Area (DWSMA)?

The City of Hastings has high nitrate in their city wells. The Minnesota Department of Agriculture (MDA) is working with a team of local farmers, crop advisers, and others to develop a list of region-specific farming practices to reduce nitrate in groundwater and the city wells.

Join us to learn and share ideas about the proposed practices and the Groundwater Protection Rule process. Practice adoption is voluntary but could become regulatory if the voluntary approach is unsuccessful.

MDA staff will be available to discuss these topics, collect comments and ideas from farmers, and answer questions. A 30-minute presentation will be shared at 4 p.m. and 7 p.m. Light refreshments will be served.

Stop by the Lebanon Hills Visitor Center from 10 a.m.–4 p.m. to stroll along the activity trail or use your GPS or phone app to search for themed geocaches. For older adventurers, take on the annual medallion hunt. This year, the event is part of the We are Water MN Exhibit at Dakota County, a Minnesota Legacy program.

Location

When you arrive, head to the Visitor Center and look for the event information station. Each station includes signs with activity instruction information and take-along guides.

• Visitor Center Trailhead, Lebanon Hills Regional Park

Activities

• Water is Life Activity Trail: Explore the activity trail and investigate how critters (and other lifeforms) depend on water in interesting ways. The littlest kids will love this stroller-friendly scavenger hunt, searching for critters along a paved trail. All ages (especially fun for ages 6 and younger).
• Protecting our Waters Geocaching:  Search for the multi-cache and become a water saver superhero as you explore how you can help protect water quality. All ages (especially fun for ages 5 and older). Participants must provide their own smartphone with geocaching app or GPS unit for geocaching activity.
• Medallion Hunt: Solve clever riddles in our medallion hunt to find the “medallion” hidden somewhere in the park. All ages (especially for ages 10 and older). Riddles will be posted on Facebook, on the Opt Outside event page Nov. 24-25. Riddles will be posted at 8 a.m. and noon on Thursday, Nov. 24 and noon on Friday, Nov. 25.

Medallion finders must post a selfie near the location of the find to the Dakota County Parks – forever wild Facebook page and call the Lebanon Hills Visitor Center at 651-554-6530 to report their find. A fantastic prize package goes to the winner.

This spring and summer, the Vermillion River Watershed Joint Powers Organization (VRWJPO) is leading an Alimagnet Lake alum (aluminum sulfate) treatment feasibility study. City of Burnsville and City of Apple Valley natural resources staff are also participating in the process. VRWJPO has hired a consultant, Barr Engineering, to conduct field work, analyze data and help put together the final feasibility report. This report is expected to be completed in July. We are hosting a public meeting on July 20, 2023 where the findings of the report will be presented.

What is an alum treatment?

An alum treatment is a common water quality improvement practice in shallow lakes that have excessive phosphorus and poor water clarity as a result of algae growth. Often times phosphorus is released into the water column from lake bottom sediments during the summer months. When alum is added to the water, it attaches to phosphorus and falls to the bottom of the lake, preventing it from feeding algae and improving water clarity. Increased clarity following alum treatments can also lead to increased aquatic plant growth, which help to keep phosphorus levels in check.

One of the first steps in planning for a potential alum treatment is to conduct a feasibility study, which will determine whether Alimagnet Lake is a good candidate for the treatment, and if it is, how to most effectively apply alum in the lake, and the estimated costs. The study will also look at alternative solutions to improve water quality, other than an alum treatment.

At the public meeting, there will be a short presentation to present the findings of the study and then time for attendees to ask questions or provide feedback on the findings. If alum treatment is determined to be a feasible option for Alimagnet Lake, VRWJPO would anticipate applying for a grant in late summer of 2023 to obtain funding to complete the work. No treatment would occur prior to 2024.

If you have any questions regarding the public meeting, please feel free to contact Caleb at 952-895-4543 or caleb.ashling@burnsvillemn.gov.