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Dams & Reservoirs List

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JUTLAND LAKE DAM

Underwater Safety Inspection

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PENNSYLVANIA DCNR EASTERN DAMS

Outlet Pipe Inspection

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During the preparation phase, our team performed an underwater inspection to verify existing conditions and the amount of demolition required.  Lines, levels and coursing were established, stone work was cleaned, shrubbery was removed, and bituminous paint was applied to all ferrous metal contact surfaces. Work included removal of outlet works items including wood posts, steel floor plates, ladder rungs, a copper cylinder, and the 8”D shear gate. Masonry restoration included repointing, and grouting areas of rubble masonry. We replaced areas of failed masonry with matching material and repaired broken and cracked stones. Units that were completely missing were rebuilt with matching stone. All deteriorated cementitious patches were removed and replaced, and new stainless steel mechanical anchors were installed. Work was performed in accordance with all relevant standards, manuals, and procedures including ASTM, AWWA, NJDWSC, ASDSO, and ACI 530.

Dam Masonry Restoration

Commercial Diving, Above & Underwater Repair Services

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LIONSHEAD LAKE DAM

Underwater Inspection / Marine Construction 

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BEAVER LAKE DAM

Underwater Inspection / Commercial Diving Service

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ERSKINE LAKE DAM

Marine Construction / Low-Level Outlet Pipe Repairs

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BEAVER DAM

Commercial Diving Services / Sluice Gate Repairs

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HIDDEN VALLEY LAKE DAM

Marine Construction - Cofferdam Repair

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CRYSTAL SPRING LAKE DAM

Underwater Inspection / Marine Construction 

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PA DCNR MEMORIAL LAKE DAM

Underwater Inspection / Marine Construction

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HIGHLAND LAKES DAM

Marine Construction / Low-Level Outlet Pipe Services

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Our diving operations follow OSHA CFR 1910 subpart T regulations, with certified staff and PE Dive Supervisors trained in ASDSO, OSHA, and ADCI standards. Services include underwater and confined space inspection, bulkhead design and installation, and valve operation testing.

Clyde Potts Reservoir Dam

Southeast Morris County Municipal Utilities Authority and French & Parrello Associates in Mendham, NJ.

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This project was located in Fayetteville, NC. Our team provided comprehensive services including scour analysis, underwater inspection, and detailed report preparation. We also offered additional capabilities such as underwater video inspection, dredging, and underwater cutting/welding services.

Lake Upchurch Dam Underwater Scour Inspection Services

Lake Upchurch Dam Preserve & Association

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Marine Inspection & Repair Services

Inlet Locating Services, Underwater & ROV Inspection

Township of Wayne

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Cofferdam Repairs

Cofferdam Repair

Hidden Valley Lake Association

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Commercial Diving & Underwater Inspection Services

Low-Flow Port Bulkhead Replacement & Debris Removal Services

USACE

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Dam Inspection & Repair

Dam Masonry Restoration

NJDWSC

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Dam Inspection & Repair Services

Occoquan Reservoir Diving Services

Fairfax Water

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Construction, Engineering, & Underwater Services

3-Year Principal Service Agreement (NY, NJ)

Private Sector Water Treatment Corporation

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Underwater Inspection & Gatehouse Repairs

Knight Dam Gatehouse Repairs

Montgomery County, PA

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Dam Inspection & Repairs, Confined Space Services

Memorial Lake Dam Inspection & Repairs

PA DCNR

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Underwater Inspection, Confined Space Inspection, Marine Repairs

Eastern Dam Diving & Confined Space Services

PA DCNR

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