Stormwater Management: Low Impact Dredging

Mick RibaultBlog, Dredging, Grading & Excavating, Pond Management

Stormwater Management: Raleigh, North Carolina System Restored

Thomas Moore- Triangle Client Service Manager, Stormwater BMP Inspections Specialized Training, Licensed Commercial Applicator

Proper stormwater management is critical for lakes and ponds to retain their system functionality. An important component of stormwater management is retaining proper water depths. Sediment buildup in lakes and ponds will compromise the integrity of the stormwater system. Dredging by stormwater management experts is necessary to return the lake or pond to a healthy, functioning, and compliant system.

Stormwater Management with conventional dredging


The traditional solution to sediment buildup in a lake or pond is conventional dredging. Conventional dredging requires the water level to be lowered so that heavy machinery can access the area. The machinery then needs to dispose of the excess sediment which can be quite costly. This process is unsightly, causes fish to die, and easily damages the surrounding area. As stormwater management experts in Raleigh, Durham, Cary, and beyond, we are always looking for innovative techniques to decrease our impact on the environment. Our low impact hydraulic dredging service meets this goal by restoring waterscapes with a much smaller footprint than conventional dredging. In addition to being low impact, hydraulic dredging is also efficient and cost-effective.

Stormwater Management: Innovative Dino 6 Sediment Removal System

Restoration of Raleigh, NC Stormwater System

We recently utilized low impact dredging as part of our stormwater management plan for a pond in a Raleigh, North Carolina HOA. We found that a new development upstream was causing an increase in volume and velocity of water flowing through a creek behind the pond. The increase in volume and velocity was causing banks of the creek to erode and eroded sediment was then deposited into the upper end of the pond. The head of the pond required dredging to a depth of a three feet.

Stormwater Management Before: Built up sediment within the creek
Stormwater Management after: Restored banks

First, we addressed the issue of the eroded banks and built up sediment within the creek behind the dam. We restored the creek banks and removed excess sediment. Our crew was able to spread and stabilize the excess sediment on site, saving time and money. They then installed a silt fence along the bank to prevent sediment from washing into the creek in the future.

Dino 6: Low impact dredging in stormwater management.

Next, we dredged the upper end of the pond. The Dino 6 glides through the water and pumps excess sediment from the targeted, shallow sections. The nutrient-rich sediment is pumped directly into geotextile bags, or Geobags, that allow the water to drain and the sediment to dry.

Stormwater Management: Geobag filled with excess sediment

We placed the Geobags offsite in the nearby woods. Once the material dried, we split the bags open and allowed the sediment to decompose out of sight. This process increased efficiency and was cost-effective, due to eliminating the need for transport of sediment to a different location. This also eliminated the possibility of damage due to heavy machinery transporting sediment.

Stormwater Management: Restored turf areas

Lastly, we regraded and stabilized any disrupted turf areas. New grass seed was established throughout and matting was secured over the seed to prevent washout.

Stormwater System Issues Resolved

Our stormwater management plan returned the pond to a functioning and compliant system. We addressed the issue contributing to excess sediment washing into the pond and took steps to prevent future washout. Changes to the surrounding area can impact lakes and ponds in a variety of ways. Proper stormwater management and maintenance are critical in keeping your system healthy. Please contact us to learn more about our stormwater management services and how we can help you create a beautiful space and sanctuary.

Our stormwater management plan returned the pond to a functioning and compliant system. We addressed the issue contributing to excess sediment washing into the pond and took steps to prevent future washout. Changes to the surrounding area can impact lakes and ponds in a variety of ways. Proper stormwater management and maintenance are critical in keeping your system healthy. Please contact us to learn more about our stormwater management services and how we can help you create a beautiful space and sanctuary.

Stormwater Management and More!

As experienced specialists in pond and lake management, our designs transform retention ponds, sand filters, stormwater basins, underground detention facilities, and other types of aquatic systems into healthy and integrated waterscapes.

From Maryland to Florida, Dragonfly Pond Works serves clients throughout the Mid-Atlantic region, including corporate, commercial, and public accounts, residential customers, and home owner associations. We provide stormwater management services and more throughout North Carolina, in Raleigh, Cary, Durham, Charlotte, and Wilmington. Our services can also be found throughout Florida, in Tampa Bay, St. Petersburg, Naples, Sarasota, and Fort Myers. We also provide services in Myrtle Beach, Charleston, South Carolina and Atlanta, Georgia; in addition to services in Virginia and Maryland. We strive to develop long-term relationships based on quality work, timely service, cost-efficiency, and of course, trust. Please contact us if you would like to learn how we can help you create a beautiful space and sanctuary.

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