Lakes Restoration Project

Killearn Lakes has six lakes throughout the neighborhood. These were manmade in the 1950's by spring feeding. Five are maintained by the HOA: Arrowhead (8 acres, fishing dock), Pine Hill (34 acres, fishing dock/boat ramp), Pettygulf (25 acres, boat ramp), Blue Heron (58 acres), Monkey Business (39 acres, fishing dock/boat ramp) and Dianne (Maintained by Golden Eagle HOA). All of the lakes are interconnected below Lake Arrowhead. Here's a map of the various Lakes.

In order to keep the growth of invasive aquatic plants under control, maintenance of the lakes consist of spraying herbicide treatments and adding Sterile Triploid Grass Carp. The video below, provided by the University of Florida's Invasive Plant Management section details the importance of managing invasive aquatic plants in Florida's lakes:

Here's a link to additional UF Plant management:

Invasives that currently exist: Hydrilla, Water Hyacinths, Duckweed, Alligator-weed, Tara. Lake Blue Heron has Filamentous Algae and Lyngbya.

Of the five Lakes maintained by the HOA, Lake Blue Heron is currently experiencing the worst invasive plant intrusion. Per Naturalake Biosciences, "There are few things as difficult to treat as Lyngbya." - Link to Article. The main sources of filamentous algae in the lake come from: 1) Air, e.g. coal/gas, 2) Septic Systems, 3) Road debris, e.g. fertilizers/silt.

The continued explosion of residential and commercial developments throughout Killearn Lakes has provided significant excess stormwater runoff entering our lakes mostly untreated. As a result, aquatic plant expansion in any lake could occur within a year or less without continued management.

Preventions: All recommendations start with prevention of pollution. They recommend avoiding yard fertilizers unless the soil is sampled for need. Most lawns here don't need fertilizers. They recommend using native plants. Lake front properties need non-invasive plant buffers to filter fertilizer pollution. Removal of plants actually gets the pollutant out of the lake. Poisoning tends to sink plants to feed more algae. Poisoning can also kill some native plants that compete with algae and crayfish have been killed by copper-based herbicide treatments.

Looking for additional information regarding the invasive species issues within our Lakes? Check out local resident and Lake Doctor, Charlie Mesing's articles here:

Killean Lakes Restoration Summary
Lake Blue Heron Treatment Summary


If you want to help clean our lakes or make your yard lake friendly, please call or contact us today. We can also have your yard evaluated by a Master Gardener!