What is Pond Dredging?

Pond dredging is the process of removing organic matter from the bottom of a pond to restore its original storage capacity. For all stormwater systems, regardless of whether they have had a routine maintenance program or not, there will come a time in their lifecycle where sediment has accumulated to a volume that has to be removed.

pond dredging

Sedimentation in Stormwater Ponds

Over time sediment, leaves, trash, debris and other organic matter settle on the bottom of the pond and decay into sludge or muck. This process is called sedimentation. The material compounds, altering the capacity of the pond, reducing the amount of water that can be held. This becomes a serious problem during rain events when ponds are supposed to collect and store runoff, but do not have the capacity to do so, resulting in flooding elsewhere. 

Stormwater on Your Property

Some stormwater ponds are not designed to permanently hold water but due to sedimentation become clogged and no longer allow for proper drainage. These ponds must also be dredged to remove nuisance vegetation and compacted soils. As the depth of the pond is compromised due to sedimentation and decomposition, dredging may be appropriate to restore the pond to its original design. Removing this excessive organic material may also remove unwanted smells due to the decaying process and algae buildup.

person on an excavator in an empty pond

The four ponds on this property became sedimented over time and required dredging to comply with local regulations.

Case Study Erosion

Learn more about common stormwater issues and how to stay ahead of them.

How Ponds are Dredged

In large scale operations, dredging may be done with a dredge machine, a barge with a submersible pump to collect sludge and a rotating blade attachment on the front to disrupt built up sediment. Dredging may also be done by dewatering the pond and excavating the material to the proper grade. 

Often in this process, the pond is dewatered, and the excess water is held in a silt discharge bag temporarily while the pond bottom is excavated. The material from the bottom of the pond is then disposed of at the proper facility and the water is returned to the pond. 

Benefits of dredging include:

  • Reduced Risk of Flooding
  • Improved Storage Capacity
  • Improved Water Quality
  • Improved Oxygen Levels
  • Algae Reduction
  • Smell Reduction
pond dredging

Pond Dredging and Rehabilitation in Michigan

Improper pond dredging and sediment stabilization lead to a second dredging at this educational facility. Learn more about why the original project failed and how this can be prevented on your property.

before image of a dry retention pond after picture of a detention pond after maintenance done by AQUALIS

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Frequently Asked Questions About Pond Dredging Services

Our AQUALIS team strives to minimize disruptions during pond dredging, using methods designed to reduce impacts on your daily activities.

Pond dredging with AQUALIS typically offers several years of reliable function, depending on regular upkeep and conditions.

Weather conditions can impact pond dredging scheduling with AQUALIS, especially heavy rain or extreme conditions, but we will adjust to minimize delays.

Annual stormwater pond inspections are recommended by AQUALIS, with additional checks following severe weather events or noticeable changes.

Maintaining your stormwater infrastructure through pond dredging with AQUALIS can significantly enhance property value and reduce liability risks.

Yes, AQUALIS provides pond dredging nationwide through regional experts familiar with local regulations.

Our AQUALIS team handles compliance documentation and communications with local regulatory agencies throughout the process.

At AQUALIS, we tailor customized pond dredging plans to meet each property’s unique needs, regulatory requirements and infrastructure conditions.

Initial assessments with AQUALIS for pond dredging services typically involve visual inspections, structural evaluations and site map evaluations.

Our AQUALIS team has extensive experience with commercial, retail and industrial properties for pond dredging, managing complex stormwater systems nationwide.

Our AQUALIS team typically responds to requests for pond dredging consultation within 24 hours to discuss your specific needs.

Yes, our AQUALIS technicians use advanced equipment and proven techniques suited for various stormwater infrastructure services, including pond dredging services.

At AQUALIS, we always aim to restore stormwater systems to their original or improved performance standards as required by regulations.

Yes, our AQUALIS team will conduct thorough post-pond dredging inspections to ensure lasting effectiveness and compliance.

Your stormwater pond may need to be dredged if it has not been maintained in years or if water is often flowing out of the outlet control structure. From inside the pond, an AQUALIS stormwater professional can measure the accumulated sediment to determine if dredging is necessary.

Permits for pond dredging vary across municipalities and by the amount of disturbance.

Regular preventative maintenance greatly reduces the risk of major issues, extending the life of your stormwater system. Your system may still need repairs, but identifying issues early with AQUALIS will ensure they are repaired before they escalate to full failure.

Yes, neglecting necessary stormwater pond maintenance or repairs with AQUALIS can result in regulatory violations, potential fines, business disruptions and safety hazards.