Twin Lakes Advisory: Curly Leaf Pondweed Now in Big Lake — How You Can Help Protect Our Waters
Important Update for All Twin Lakes Residents
Curly Leaf Pondweed (CLPW) — a fast-growing and invasive aquatic plant —was confirmed in multiple locations in the Big Lake last week as of July 1, 2025. Unfortunately, the CLPW was not contained to the small lake and has now infiltrated and is threatening our large lake.
This is not just a cosmetic issue: CLPW can harm native native aquatic plants, disrupt fishing, reduce water quality, and make swimming and boating difficult.
Where is CLPW in the Big Lake?
New growth points have been confirmed in multiple areas, primarily along the shorelines between the passageway from Little Lake and the Big Lake Dam/Spillway.
These areas should be avoided for recreational boating, paddling, or fishing to help prevent further spread.
CLPW Spread Pathway: From Little Lake to Big Lake
Little Lake source of original Curley Leaf pondweed infestation
Passageway between lakes have an open flow
Arrows indicating water flow into and out of the big lakes : plant fragments moving from Little Lake to Big Lake and Big Lake with water inflows
New CLPW growth points marked in Big Lake in Yellow (e.g., near docks and shorelines).
What You Can Do Right Now
We all have a part to play in protecting our lakes. Here’s how you can help:
✅ Avoid boating or fishing near shorelines and visible vegetation. CLPW fragments easily attach to boats and gear.
✅ Clean all boats, paddles, and fishing equipment thoroughly after each use. Remove and properly dispose of any plant fragments — never throw them back into the water.
✅ Spread the word. Encourage your neighbors and guests to follow these best practices.
✅ Support unified, science-driven lake management efforts. A collaborative, transparent approach is crucial to keep our waters healthy.