Quick answer: A community pond stays healthy with a few checks each season: inspect structures in spring, manage weeds, algae and mosquitoes in summer, cut back and clear leaves in fall, and review and budget in winter. Problems caught early cost a fraction of a restoration.
Spring
- Inspect inlets, outlets, banks and any fountain or aerator
- Clear winter debris from grates and pipes
- Note early weed and algae growth and identify it
- Schedule the season plan and any permits needed for treatment
Summer
- Monitor algae and weed coverage every few weeks
- Treat growth in sections during hot weather to protect fish
- Keep aeration running
- Check for stagnant water and mosquito breeding
- Watch the shoreline for invasive plants such as phragmites
Fall
- Remove fallen leaves before they sink and feed next year's algae
- Cut back shoreline growth where appropriate
- Treat perennial invasives while they are sending energy to their roots
- Repair erosion before winter
Winter
- Review the year: what grew, what was treated, what it cost
- Update maintenance records, which many communities are required to keep
- Budget for next season and any larger repairs
What do boards most often get wrong?
Waiting until the pond is covered. By then the nutrient load is high, treatment has to be staged to avoid a fish kill, and residents are already complaining. A scheduled program avoids all three.
When should we call a professional?
Whenever anything is going into the water. In New York, aquatic pesticide applications generally require a certified applicator and often a permit.
Related: Pond weed and algae management | Surface water management
This article is general information. Pesticides and repellents must always be applied according to the product label and state regulations.