ACD Hard at Work Removing Carp from Martin Lake

The Anoka Conservation District has been hard at work this September removing invasive carp from Martin Lake, located in northeastern Anoka County. Martin Lake has had a large carp population over the years, which can be extremely detrimental to lake water quality if left unmanaged. This type of work isn't possible without strong partnerships between natural resource professionals and residents of the community. This project and the dedicated volunteers on Martin Lake are a shining example of the level of civic engagement that is achievable when these relationships are nurtured. Thank you volunteers!

Updates are also periodically posted here: Carp Harvests

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Protecting Your Streambank without Breaking the Bank

Erosion along streambanks can cause pollution to local water resources and result in loss of property for landowners. Many times, developmental practices leave streambanks bare and without vegetation covering the soil which can lead to erosion.

Live staking is a practice that puts vegetation back into vulnerable areas. This practice is very low-cost when compared to other streambank stabilization practices and is also something that a landowner can do on their own.

Live stakes can be purchased but many times can be found actively growing in the wild. The most common species used for live staking are species of Willow and Dogwood.

Live stakes should be cut in 2-3 foot lengths and be between 0.5 and 1.5 inches in diameter. It's recommended to cut the stakes at an angle to make them easier to install.

Once harvested, live stakes can be stored for several days in a bucket of water out of the sun but it is recommended to harvest and install live stakes within the same day.

Install stakes in rows, two to three feet apart along the streambank. Planting needs to be deep enough so that the plants can reach water. The stakes are purposely planted densely knowing that not all stakes will survive.

Strong root growth is important during the first growing season. You may not see above-ground growth or budding but that does not mean plants didn't survive. A light tug on the stake can help identify if the roots have become established.

This practice is easy to maintain and additional stakes can easily be added in the future to improve bank stability and fill in any of the areas you may have missed. 

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135 Hits

Buffer Law Update

Erosion along streambanks causes pollution and loss of property for the landowner. Current development practices often leave streambanks bare and without vegetation. These conditions can lead to erosion occurring on the banks since there is no longer plant material holding the soil in place.

ACD is continuing to work with landowners in 2020 to help bring Anoka County into 100% compliance with the State Buffer Law. The law that was passed in 2017 requires a perennial vegetated buffer along waterways across the state:

  • 50' average and minimum of 30' along designated public waters.
  • 16.5' minimum along designated public ditches.

The goal of the law is to improve water quality in Minnesota as these buffers help filter out phosphorus, nitrogen, sediment and other pollutants.

With the growing season underway, ACD staff is actively checking properties for compliance and providing direction to landowners.

As of July 2019, the state was 98% compliant but this is an ongoing effort and will continue to update and develop as local land use changes.

The next phase, includes another professional review of properties throughout Anoka County to identify non-compliant parcels. This review will be based on 2019 aerial photos that will be released later this year.

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206 Hits

Oak Wilt

Oak Wilt is becoming an increasing problem throughout the State and kills off a large number of oaks every year. Even though oak wilt is active in a large area of Minnesota, effective management techniques exist.

Oak wilt in a healthy tree will begin wilting the canopy. This usually starts at the top of the tree and spreads downward. The tree then sheds leaves, which will begin individually wilting at the edges and spread towards the midrib of the leaf or at the leaf tip and wilt towards the stem. A discoloration or streaking of the wood just below the bark may also be present.

In Red Oaks, the deterioration process can take as little as 4 weeks. In White Oaks, the disease may come back every year but death of the tree could take up to 5 years or longer after the initial symptoms appear.

Healthy oak trees are usually infected by the fungus's ability to move underground through the roots of nearby trees that have grafted together. In general, trees more than 50 feet apart are less likely to be infected through grafted roots. Sap beetles also transport the disease above ground by moving from an infected tree to a healthy one.

Stopping the spread of oak wilt is possible. Breaking root connections between closely spaced oaks will reduce the chance of the disease spreading from infected trees to nearby healthy ones. This takes a specialized piece of equipment and can be difficult to achieve. This is way preventing infection in the first place is the recommended best management practice.

Even though the nice weather makes you want to head outside and work on your property, you should avoiding pruning and wounding healthy oaks in the spring and summer. Between April and July, oak trees are at a much higher risk of infection by sap beetles who are attracted to fresh wounds in the bark of oak trees and may be carrying the fungus. Oak trees should be assessed for storm damage and any wound should immediately be sealed with a water-based paint of another type of plant sealer.

Other techniques to stop the spread of oak wilt include; avoid moving firewood from known infected areas, timely removal and disposal of infected trees, and the use of fungicide when necessary. Many times multiple approaches are necessary to slow or eradicate the problem. Meeting with a local tree care providers can help create a management plan that will be effective on your property.

If you have more questions or are concerned about Oak Trees in your area, contact a local professional to inquire about what can be done on your property. Early detection is still the best method of control.

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346 Hits

ACD Awarded a State Grant for Carp Mgmt. at Linwood & Martin Lakes

A State grant has been awarded for carp management at Linwood, Martin and Typo Lakes and is set to begin in 2020. This $148,000 grant is funded through the Clean Water Fund and will build on the successes of the current carp management program. Contributions from the Martin Lakers Association, Linwood Lake Association, and the Sunrise Watershed Management Organization will assist in funding the grant. ACD will be the grant recipient and help coordinate partnerships between private contractors, volunteers, and local organizations. The state took notice of the success the current program is having and saw that continuing work in this area of Anoka County should be a priority, ranking the project #3 out of nearly 100 applications statewide​.

Carp management over the last 3 years, funded by a different grant, was able to remove enough carp from the lakes to reach the halfway mark of the total reduction goal. Similar techniques will be continued over the next 3 years. A private contractor will develop management plans specific to each lake. Large box-nets will be installed in priority areas and be baited with bags of cracked corn. Throughout the season the nets will be harvested by the contractor and local volunteers. The nets will be maintained by residents who live near the harvesting sites and ACD staff​.

Carp populations have the ability to grow quickly and can be devastating to overall lake health if left unmanaged. This grant is focused on improving water quality, help reduce seasonal algae blooms and improve the habitat and life cycle for other game fish.

This grant is the fruition of hard work and support from many individuals and organizations. By continuing to plan and build strong local partnerships, these lakes are on track to meet management goals and prevent carp population increases that would likely cause declining water quality.

If you live on Linwood, Martin or Typo Lakes and would like to learn more about the program or would like to inquire about volunteering, please contact the ACD office. (763) 434-2030.

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291 Hits