.svg)
How the OverFlo Guard™ Works
The OverFlo Guard™ is a floating HDPE structure that surrounds existing overflow risers.It captures cooler, mid-depth water while keeping floating debris out — ensuring constant flow and protecting water quality.
Our Story
.svg){kind=icon}
.svg){kind=icon}
The Challenge
Traditional overflow risers draw from the surface—where water is warm and filled with floating debris.
- Blockages cause flooding and maintenance issues.
- Warm outflows increase downstream temperatures, degrading aquatic habitats.
The Solution
The OverFlo Guard™ is a floating HDPE structure that surrounds existing overflow risers.It captures cooler, mid-depth water while keeping floating debris out — ensuring constant flow and protecting water quality.
Proven Results
A 2019 study by the University of Georgia’s Warnell School of Forestry and Natural Resources found that the OverFlo Guard™ successfully discharged cooler water from mid-depths of Big Sister Pond at Whitehall Forest — improving habitat for cold-water species such as trout.
.svg){kind=icon}
Our Network
see all our network
Cox Enterprises
City of Fort Worth
Sonoran Institute
Anacostia Riverkeeper
Chesapeake Bay Trust
National Oceanic and Atmospheric Agency
Metropolitan Washington
Department of Energy and the Environment
City of Waycross
Satilla Riverkeeper
Proven Performance: Validated by the University of Georgia
In partnership with the University of Georgia’s Warnell School of Forestry and Natural Resources, the OverFlo Guard™ was evaluated in a field study at Big Sister Pond in Athens, GA. The goal of the research was to improve downstream water quality by reducing the temperature of water discharged from impoundments—an important factor for maintaining healthy aquatic ecosystems and supporting cold-water fish species such as trout.
Traditional overflow systems release warm surface water that can exceed 30°C (86°F) in Georgia summers, which is harmful to fish habitats. The UGA research team installed the OverFlo Guard™ over an existing riser pipe to test its ability to draw cooler water from mid-depths of the pond rather than from the surface. Continuous temperature monitoring revealed that water released through the OverFlo Guard™ was consistently cooler than surface water, confirming the system’s ability to reduce thermal loading in downstream environments.
These findings demonstrate that the OverFlo Guard™ is not only effective at preventing debris buildup—it also offers measurable environmental benefits. By releasing cooler, oxygen-rich water, the system helps expand viable cold-water habitat, improves dissolved oxygen balance, and supports the long-term health of aquatic life. The study concluded that this simple, passive modification can play a significant role in enhancing the ecological performance of ponds and reservoirs across the Southeast.
Key Features
Prevents Blockages:
Keeps floating trash and debris from clogging overflow pipes to ensure consistent drainage.
Reduces Outflow Temperature:
Draws cooler mid-depth water for discharge, lowering downstream water temperatures.
Improves Fish Habitat:
Supports cold-water species by maintaining cooler, oxygen-rich conditions below ponds.
Corrosion-Resistant HDPE:
Built from durable, UV-stabilized HDPE for long-lasting performance in all conditions.
No Power or Pumps Required
Operates passively using natural water flow—no electrical components or maintenance needed.
Easy Retrofit Installation
Fits seamlessly over existing overflow risers with no structural modification required.
*Specification sheet is available upon request.
-p-500.jpeg)
.jpeg)
