Aquatic Invasive Species

Chisago County Water Monitoring Video

Join Chisago Lakes Lake Improvement District and county Water Resources staff for a day of lake monitoring in the Chisago Lakes Chain of Lakes watershed.  

Visit the Lower St. Croix Partners website where Susanna, Water Resources Manager with Chisago County, demonstrates how to record lake level readings and check zebra mussel monitoring plates.   County Watercraft Inspectors show how they work with boaters to inspect and decontaminate watercraft and prevent aquatic invasive species from coming into area lakes.  

To view the Chisago County Water Monitoring video, visit https://www.lsc1w1p.org/virtual-project-tour or https://www.youtube.com/watch?v=oAyrgsPx3GA.


Chisago County Aquatic Invasive Species Prevention

The goals of the Chisago County Aquatic Invasive Species (AIS) Program is to Prevent the spread of AIS through conducting watercraft inspections, decontamination of watercraft, providing education and outreach to citizens, enforcing AIS laws and regional coordination. The County conducts Early Detection activities through zebra mussel veliger sampling, installing zebra mussel monitoring plates, and conducting aquatic plant Point-Intercept surveys. Chisago County will implement Rapid Response actions if zebra mussels or other AIS are found in a lake or river located in the County.

Chisago Lakes Lake Improvement District

One of the goals of the Chisago Lakes Lake Improvement District is to promote the reduction of non-native aquatic invasive species (AIS). Aquatic invasive species are non-native plants, animals and other organisms. When they are introduced into a lake or river they cause harm to the ecosystem. Once in a lake or river they can be impossible to eliminate and difficult to manage. Each year, thousands of watercraft users come to local lakes and rivers, potentially bringing zebra mussels and other AIS along with them. 

Reporting Suspected Invasive Species

Report a Suspected Invasive Aquatic Plant.

Report a Suspected Invasive Aquatic Animal.

Clean, Drain, Dispose and Dry

The AIS Fact Sheet (PDF) helps educate watercraft users on how to Clean, Drain and Dry watercraft and Dispose of bait to prevent the introduction and spread of AIS. The AIS Fact Sheet (PDF) also provides information on the types of AIS species currently found in lakes in Chisago County. Thank you for taking the steps and helping to reduce the spread of AIS. What you do Matters...and it’s Minnesota State law to Clean, Drain, Dispose!

View the Annual Report Fact Sheets below for more information on AIS Activities conducted in Chisago County last year.

AIS Communication and Education

In 2016, staff developed an AIS Communication and Education Plan for Chisago County with the Mission to "Education Citizens about AIS and encourage behavior that reduces or stops the spread of AIS in Chisago County." Please view the fact sheet below for more information on AIS educational activities

 Watercraft Inspection Program

Chisago County and the Lake Improvement District actively works to minimize the spread of aquatic invasive species by conducting boat inspections at public water accesses. The Watercraft Inspection Program (PDF) goal is to inform and educate watercraft users on the threats of AIS. Inspections are key to helping watercraft users understand how to prevent the spread of AIS by cleaning off weeds, dumping and replacing minnow bucket water, and removing the drain plug to let water drain from watercraft.

AIS Treatment Program

The Chisago Lakes Lake Improvement District also provides cost share funds to are lake associations for treatment of Eurasian Watermilfoil and Curly-leaf Pondweed to improve navigation for watercraft in are lakes.

AIS in Minnesota

  • 95% of lakes in Minnesota are not infested with AIS.
  • 98% of lakes in Minnesota are not infested with zebra mussels.

Let’s continue to work together to help prevent the introduction and reduce the spread of AIS in Chisago County and in the Chisago Lakes Lake Improvement District. Visit the MN Department of Natural Resources (DNR) Infested Waters List for known locations of invasive species found in Minnesota lakes and rivers.

Invasive Phragmites in Chisago County and the Lake Improvement District

Chisago County and Chisago Lakes Lake Improvement District (LID) staff, along with local lake associations, are working with the MN Aquatic Invasive Species Research Center (MAISRC) and MN Department of Natural Resources to identify and map occurrences of invasive phragmites and implement treatment strategies to control infestations along shorelines, as well as in wetland and upland areas throughout Chisago County.

Center Lakes, Chisago-Lindstrom and Green Lakes Associations are actively working with lakeshore owners to manage stands of invasive phragmites on shorelines by treating with an approved herbicide.  The Chisago Lakes LID and other partners are working to treat invasive phragmites in roadsides and other upland sites. 

If you live in the Chisago Lakes Area, contact your local lake association and a representative will consult with you to determine if you have invasive phragmites.  If your property has invasive phragmites, the lake association will document the population in EDDMaps, a statewide reporting website, and will guide you on the next steps to treat the invasive phragmites.

If you live anywhere in Chisago County, contact Julia at bohne001@umn.edu for guidance on determining if you have native or invasive phragmites.  She will ask you to take and share photos that will help in making a remote identification. 

To contact your local lake association, or for more information, view the Invasive Phragmites fact sheet below.

Aquatic Plant Surveys and Web Mapping

The aquatic plant point-intercept survey reports list the frequency and distribution of native and invasive plants found in a lake.  

Web mapping links are available in the following point-intercept survey reports.  All plant species found during the survey are included in the map.  

Clicking on an individual point reveals all the plant species found at a given point and the density (abundance) of each species sampled at that point.  To find the ArcGIS Online map, please click on the following surveys:

East Rush Lake Plant Survey 2021 - Web Map

Little Horseshoe Lake Plant Survey 2020 - Web Map

Rabour and Mandall Lake Plant Survey 2020 - Web Map
 

Aquatic Plant Surveys

  1. 2004 North Center Lake Aquatic Plant Survey (PDF)
  2. 2004 South Center Lake Aquatic Plant Survey (PDF)
  3. 2004 South Lindstrom Lake Aquatic Plant Survey (PDF)
  4. 2005 Chisago Lake Aquatic Plant Survey (PDF)
  5. 2005 Green and Little Green Lakes Aquatic Plant Survey (PDF)
  6. 2005 North Lindstrom Lake Aquatic Plant Survey (PDF)
  7. 2008 South Center Draft Point Intercept Survey (PDF)
  8. 2009 South Center Draft Point Intercept Survey (PDF)
  9. 2010 Chisago Point Intercept Survey (PDF)
  10. 2010 South Center Point Intercept Survey Points (PDF)
  11. 2010 South Lindstrom Point Intercept Survey (PDF)
  12. 2011 North Center Point Intercept Survey (PDF)
  13. 2015 Green Lake Aquatic Vegetation Survey - Muskgrass Map (PDF)
  14. 2015 Green Lake Aquatic Vegetation Survey - Coontail Map (PDF)
  15. 2015 Green Lake Aquatic Vegetation Survey - Canada Waterweed Map (PDF)
  16. 2015 Green Lake Aquatic Vegetation Survey - Eurasian Watermilfoil Map (PDF)
  17. 2015 Green Lake Aquatic Vegetation Survey - Water Celery Map (PDF)
  18. 2015 Green Lake Aquatic Vegetation Survey - Whitestem Pondweed Map (PDF)
  19. 2015 Green Lake Aquatic Vegetation Survey (PDF)
  20. 2017 Fish Point Intercept Survey (PDF)
  21. 2017 Horseshoe Point Intercept Survey (PDF)
  22. 2017 Kroon Lake Point Intercept Survey (PDF)
  23. 2017 Little Point Intercept Survey (PDF)
  24. 2017 North Center Point Intercept Survey (PDF)
  25. 2017 Spider Point Intercept Survey (PDF)
  26. 2018 Chisago Lake Point Intercept Survey (PDF)
  27. 2018 West Rush Point Intercept Survey (PDF)
  28. 2019 Little Comfort Point Intercept Survey (PDF)
  29. 2019 North and South Goose Point Intercept Survey (PDF)
  30. 2019 North Lindstrom Lake Point Intercept Survey (PDF)
  31. 2019 Wallmark Lake Point Intercept Survey (PDF)
  32. 2020 Little Horseshoe Lake Point Intercept Survey (PDF)
  33. 2020 Pioneer Lake Point Intercept Survey (PDF)
  34. 2020 Rabour and Mandall Lakes Point Intercept Survey (PDF)
  35. 2020 School Lake Point Intercept Survey (PDF)
  36. 2021 East Rush Lake Point Intercept Survey (PDF)
  37. 2021 South Lindstrom Lake Point Intercept Survey (2021)
  38. 2021 Linn Lake Point Intercept Survey (PDF)

Common Carp Surveys

Aquatic Invasive Species and Watercraft Inspection Reports

  1. 2010 Watercraft Inspection Report - Chisago Lakes (PDF)
  2. 2011 Watercraft Inspection Report - Chisago South Lindstrom (PDF)
  3. 2011 Watercraft Inspection Report - Forest Lake (PDF)
  4. 2012 Watercraft Inspection Report - Chisago Lakes (PDF)
  5. 2014 Watercraft Inspection Report - Chisago Lakes
  6. 2015 Aquatic Invasive Species and Watercraft Inspection Report - Chisago County
  7. 2016 Aquatic Invasive Species and Watercraft Inspection Report - Chisago County (PDF)
  8. 2017 Aquatic Invasive Species and Watercraft Inspection Report - Chisago County (PDF)
  9. Attachment A - 2017 Watercraft Inspection Summary CLFLWD (PDF)
  10. Attachment B - 2017 Yearend Watercraft Inspection Summary CLFLWD (PDF)
  11. Attachment C- 2017 AIS in Previous Lake or River Visited - Lake Name (PDF)
  12. Attachment D - 2017 DNR Chisago-South Lindstrom Grant Summary Report (PDF)
  13. Attachment E - 2017 Lakes and Rivers with AIS in Chisago County (PDF)
  14. 2018 Aquatic Invasive Species and Watercraft Inspection Report - Chisago County (PDF)
  15. Attachment A - 2018 Watercraft Inspection Program Yearend Report CLFLWD (PDF)
  16. Attachment B - 2018 AIS in Previous Lake or River Visited - Lake Name (PDF)
  17. Attachment C - 2018 Lakes and Rivers with AIS in Chisago County (PDF)
  18. 2019 Aquatic Invasive Species and Watercraft Inspection Report - Chisago County (PDF)
  19. Attachment A - 2019 Watercraft Inspection Program Yearend Report CLFLWD (PDF)
  20. Attachment B - 2019 Lakes and Rivers with AIS in Chisago County (PDF)
  21. Attachment C - 2019 AIS Prevention AID Program Chisago County (PDF)
  22. 2020 Aquatic Invasive Species and Watercraft Inspection Report - Chisago County
  23. Attachment A - 2020 CLFLWD Yearend Watercraft Inspection Summary Report
  24. Attachment B - 2020 Lakes and Rivers with AIS in Chisago County
  25. Attachment C - Aquatic Invasive Species Prevention AID Program Chisago County
  26. 2021 Aquatic Invasive Species and Watercraft Inspection Report - Chisago County (PDF)
  27. Attachment A - 2021 CLFLWD Yearend Watercraft Inspection Summary Report (PDF)
  28. Attachment B - 2021 CLFLWD AIS Program Yearend Summary (PDF)
  29. Attachment C - 2022 Lakes Rivers with AIS in Chisago County Map (PDF)
  30. Attachment D - Aquatic Invasive Species Prevention AID Program Chisago County (PDF)

Lakes Susceptibility to Zebra Mussels

Zebra Mussel Plan