Question 1

How big does my retention pond need to be?

Accepted Answer

Pond size is calculated based on: contributing watershed area, percentage of impervious surface, allowable discharge rate, required retention volume (typically 1 inch over impervious area for water quality), and SFWMD flood criteria. A 1-acre parking lot might need 4,000+ cubic feet of retention volume.

Question 2

Can you renovate an existing pond?

Accepted Answer

Absolutely. We frequently renovate ponds to: increase storage capacity through dredging, improve water quality with littoral plantings, repair or upgrade control structures, restore permit compliance, and improve aesthetics. Renovation is often more cost-effective than new construction.

Question 3

What is the difference between retention and detention?

Accepted Answer

Retention ponds permanently hold water and allow it to percolate into the ground or evaporate. Detention ponds temporarily hold stormwater and slowly release it through an outlet structure. In Florida, retention is often preferred because it recharges groundwater and provides better water quality treatment.

Question 4

Why does my retention pond have algae problems?

Accepted Answer

Common causes include: excess nutrients from lawn fertilizers, poor water circulation, inadequate littoral zone vegetation, accumulated sediment, and thermal stratification. Solutions may include aeration, beneficial bacteria, enhanced plantings, and watershed nutrient management.

Question 5

What maintenance does a retention pond need?

Accepted Answer

Regular maintenance includes: annual inspection of control structures and banks, littoral zone vegetation management, aquatic weed control, sediment monitoring and periodic dredging (typically every 15-25 years), debris removal, and ensuring outfall structures remain clear.

Retention Pond Design & Construction

What We Provide

Hydrologic Design

Control Structures

Littoral Zones

Bank Stabilization

Benefits

Our Process

Frequently Asked Questions

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