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  • Conservation Programs
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  • Tree Program
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Aquatic Invasive Species (AIS)

AIS or aquatic invasive species are non-native plants  animals that were either accidentally or purposefully brought from other  regions of the world and over populate or take over an area due to that  lack of their usual competitors that would keep their populations in  check. Aquatic seeds/plant fragments were first introduced into our  waterways most often by hitchhiking in the bilges of large ships, spread  by water birds or people who wanted them in their ponds or aquariums  but later dumped them.
Invasive species harm the ecosystem by out  competing natives for food, sun and space. Many native plants provide  food and shelter for insects and animals disrupting the food chain and  reducing biological diversity. They can also cause issues for recreation  and the general aesthetics of a water body.

Eurasian Watermilfoil

Eurasian Watermilfoil

Eurasian Watermilfoil

Fast growing. Forms thick mats that choke out native vegetation & impact swimmers, boaters & fish. 


Union Lake is currently on the Infested Waters List for Eurasian Milfoil

Zebra Mussels

Eurasian Watermilfoil

Eurasian Watermilfoil

Prolific invaders, clogging/damaging to hard surfaces like docks, boat motors. Sharp shells can cut swimmers feet.

Starry Stonewort

Eurasian Watermilfoil

Starry Stonewort

Grows dense mats at the water’s surface that out competes native aquatic plants and could also affect water salinity levels.

How do AIS spread?

The  pressure many of our lakes see from recreational users can take a toll. As mobile as we are, (fishermen, boaters, paddle boarders, kayakers,  etc...) we hop from lake-to-lake with ease. Aquatic  invasive species (AIS) or nonnative plants, animals and sometimes fish  are finding ways to spread along with our movements. The easiest mode  of transportation for AIS is unfortunately by interaction with us. 

On  their own, invasive species expand territory fairly slow. With our help  AIS are able to travel like jet-setters! Often they can be found  attached to boat motors, (A) the watercraft itself, (B) trailers, or still floating within the live-well or bilge water. (C)

Give customers a reason to do business with you.

What can you do to stop the spread of AIS?

Drain everything!

Drain water from boats, motors, live-wells, even bait buckets before leaving the lake. Don't let AIS piggyback in bilge.

Clean your watercraft & trailer of all foreign matter.

Remove  plants, mud, and other debris from your watercraft and trailer. Don’t  allow any natural matter to be transported to other bodies of water.  Remember... watercraft does not just mean boats. Kayaks, canoes, paddle  boards, jet skis, etc... they all are capable of transporting AIS.

Dry it out. It’s the law!

Any  dock equipment moved from one lake to another must be dried on land for  at least 21 days before it is placed in new lake. This includes docks,  boat lifts and swim platforms.

Observe & report.

If you think you might have spotted an aquatic invasive species... report it! Early detection is the key to limiting the spread. Feel free to contact 

    us if you think you’ve found something fishy.

  • Rain Barrels
  • State Buffer Law
  • Tree Program
  • Weed Management

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Protecting water and natural resources