FAILED POND
OVERFLOW REPAIR
Wetland-compliant dam repair and ecosystem restoration — Vermont Class 2 Wetland.
HOW A 1-ACRE POND DRAINED COMPLETELY
The standpipe overflow for this 1-acre pond was constructed of steel and failed at a connection point slightly below ground level within the pond. At first, this likely resulted in a slow leak driven solely by hydrostatic pressure.
Over time, the soil, sediment, and gravel covering the failure point eroded, allowing free-flowing water. The pressure and sheer volume of water created a catastrophic failure at the connection point — and the pond drained entirely.
CLASS 2 WETLAND DESIGNATION
The pond and surrounding area are classified as a Class 2 Wetland by the Vermont Department of Environmental Conservation. This designation required us to coordinate the repair directly with a state-assigned representative before any work could begin.
Working on behalf of our client, we navigated the regulatory process and found a compliant solution that allowed us to complete the repair quickly and cost-effectively — without compromising the ecosystem.
SCOPE OF WORK
State & Regulatory Coordination
The pond and surrounding area are classified as a Class 2 Wetland by the Vermont DEC. We worked directly with an assigned state representative on behalf of the client to navigate the approval process, securing all necessary permits to proceed in a compliant, cost-effective manner.
Dam Excavation & Overflow Removal
A portion of the dam was excavated to expose and remove the failed steel standpipe overflow, which had corroded and failed at a connection point just below the pond floor — ultimately allowing the entire 1-acre pond to drain.
Overflow Replacement
The standpipe overflow was completely replaced to specific dimensions matching the original design, ensuring proper hydraulic function and long-term reliability.
Dam Reconstruction & Compaction
The dam was backfilled and reformed using proper compaction techniques, compacting in lifts of 3"–6" to achieve the required compaction rates and structural integrity throughout the embankment.
Erosion Control — Straw Blankets
100% biodegradable erosion-controlling straw blankets were installed across the dam surface, secured with fully biodegradable anchoring stakes — protecting the disturbed soil while native vegetation establishes.
Native Grass Seeding
Two native grass blends were selected: a deep-rooting, high-stability blend for the side banks to resist erosion and sloughing, and a standard lawn blend for the dam top to match the surrounding backyard.
PROJECT GALLERY
Dam top regraded and compacted — new standpipe overflow visible at right, pond beginning to refill
Excavation in progress — dam opened and new overflow standpipe installed, compaction lifts underway
100% biodegradable straw erosion blankets installed over reformed dam with native grass seeding
Completed project — pond restored and refilling, straw blankets protecting the dam banks
COMPLEX PROJECT? WE'VE DONE IT.
From regulatory navigation to hands-on restoration — we handle difficult projects from start to finish.
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