Tag Archives: Canal Dredging

Cavache-MAYA CAELYN 1170

Little Known Ways to Nourish a Coastline

Ponce de Leon Inlet, FL– Crews have been granted permission by the U.S. Army Corps of Army Engineers (USACE) to begin dredging on the Ponce de Leon Inlet.  This should make it more secure for anglers to navigate. In addition, the dredging will offer additional beach nourishment for the nearby coastline. The Inlet itself has not been maintained to this extent in over ten years according to the Corps officials.

Those working on the project have already begun the mobilization phase of the eight-month-long hydraulic dredging project.  In fact, crew members working on the project are expected to remove nearly 38,000 ft² (3,530 m²) of sand and debris. The dredging should increase water depths to nearly 12 ft (3.65 m). The USACE is financing the and has awarded Cavache (Incorporated) of Pompano Beach the contract.

What’s in a Dredge

The team from Cavache Inc,  (owned and operated by Mr. Adam Adache and Mr. Anthony Cavo), has over 100 years of combined hydraulic dredging experience.  They have previously worked on similar types of projects such as the Florida Inland District project. The team from Cavache will be using an Ellicott 1170 “Dragon” dredge known as the “Maya Caelyn” to complete the project.

The portable cutterhead dredge is a medium sized dredge that is designed to perform exceptionally well in typical conditions experienced in Atlantic inlets, and entrance channels from the Sea to inner coastal waterways.

Ponce de Leon Project Details

“What is really unique about this specific project is that this is an offshore disposal placement project that requires pumping material offshore. The pumping distances are fairly lengthy, and our team is using multiple boosters to complete the project,” noted Cavache Principle Owner Anthony Cavo.

Debris and sand that accumulated during Hurricanes Irma and Matthew caused aggressive shoaling.  Also, the materials caused by the shoaling will be pumped from the Ponce de Leon Inlet.  The materials will then be transported to a nearby location and used to help nourish area beaches.  Once the dredging process is complete the flow of water will drastically improve in the nearby region. Dredging the inlet should bolster the shoreline during subsequent storms making it simple for vessels to freely move about the inlet.

Ellicott 1270 Dragon Dredge

Ellicott Builds 1270 Dredge for West African Based Oil Company for Channel Dredging -Ellicott Dredges

Ellicott Dredges, the Baltimore-based dredge manufacturer with over 133 years of experience, recently built a Series 1270 “Dragon®” dredge for an oil company in West Africa. The dredge recently launched and will be used for channel dredging in swamp regions. The customer has worked with our team before and owns two Series 670 “Dragon®” dredges and appreciates the simplicity of the dredges operating systems, rugged design and high performance.

Ellicott was awarded the contract based on the customers’ interest in the 1270’s shallow dredging optimization feature that is built into Ellicott’s 16 – 20 inch dredges, with an option to adjust the dredges ladder to a maximum digging depth of 50 ft (15.2 m). This is feature is extremely appealing to the customer because there are times when they will have to transition to a land reclamation project that requires efficient work productivity in both shallow and deep working conditions.

The portable cutterhead dredge includes two diesel engines that enables the operator to adjust both the cutter and slurry pump power separately to efficiently meet West Africa’s varying working conditions and yield maximum production rates. The 1270 also includes wide pontoons offering optimum stability and additional workspace for crew members working below and on deck.

Why Dredging Sea Dog Creek Was Necessary - Ellicott Dredges

Why Dredging Sea Dog Creek Is Necessary

Anglers navigating Sea Dog Creek near the Town of Hempstead, New York, are now able to safely travel the creek with relative ease in shallow areas this summer; however, this hasn’t always been the case. In 2012, clogged floodwaters created by Superstorm Sandy made it almost virtually impossible for large commercial vessels to navigate charted waters between the eastern end of Sea Dog Creek and nearby Long Creek.

Recently local workers from the Department of Conservation and Waterways used an Ellicott 460SL “Swinging Dragon®” dredge, known as the “Hempstead Bays” to remove 8,000 cubic yds³ (6,116 m³) of sand from nearby Sea Dog Creek. The swinging ladder dredge was purchased by the Town of Hempstead from dredge manufacturer Ellicott Dredges in 2008. Crews used the dredge to remove sand and water to dig down to approximately 12 ft (3.6 m).

One of the many challenges the crew faced during the dredging process included working within very short dredging windows. In addition, they were not allowed to use clean sand within the boundaries of regulated title zones. Despite some limitations, crews were able to overcome these obstacles to complete the project over the course of two weeks

Impact of Hurricane Sandy

There is little doubt that Hurricane Sandy had a tremendous impact on the local region. In fact, when flooded waters swept through the local area, it created a shoal near the eastern end of Sea Dog Creek causing it to clog making virtually impossible for casual boaters to navigate the creek.

Conservation Biologist Dr. James Browne noted that Hurricane Sandy had a tremendous influence on the formation of a sandbar causing the waterway to clog.

“Simply put, was sand stirred up along the beaches, and ebb shoal bar. The materials were then pulled into the bay during the storm surge. The sand was then deposited at some locations which slowed the flow of water. When conditions returned to normal, there was very little to no water in some of the channels.  Traditionally some of these areas range from 4 to 6 ft. in depth. The minimized water levels were then exposed causing a sandbar to form at extreme low tides. This made it hard to navigate a vessel without water underneath of its keel,” noted Dr. James Browne.

The Environmental Impact On Sea Dog Creek

Sea Dog Creek is the only inland waterway route for vessels to navigate north of the fixed bridge close to nearby Point Lookout. The recent improvements now make it easier for commercial boats to travel freely. However, a more pressing problem includes making better use of clean materials that include the enhancement of salt marsh projects.

Hempstead council members were unable to obtain marsh restoration on the emergency permit granted to them by the NYSDEC. Additional funding is being sought for future marsh restoration work sourcing material from Sea Dog State marshes and shoals. The hope is that the additional work will reduce flooding during future storms.

Almost every channel in the surrounding region remains clogged. Therefore additional dredging is required to keep waterways clear. Thankfully, the Town of Hempstead has the necessary dredging equipment in-house to address environmental disasters. This keeps recovery costs reasonably low should an unfortunate incident occur in the future that impacts nearby waterways.

The NYSDEC Funds Sea Dog Restoration Project

A group of officials representing the Town of Hampstead led by Councilman Timothy D’ Esposito asked the NYSDEC to accelerate the necessary dredging permit process after several vessels ran aground due to shallow water conditions.

Town officials needed a state waiver from the NYSDEC to begin dredging in state intercoastal waterways. That’s because this is typically the time of year when spawning season starts for flounder fish.

Thanks to the help of the NYSDEC the Town of Hempstead Department of Conservation and Waterways was granted a 10-year dredge permit to maintain Sea Dog Creek.

The entire operation was completed under an approved emergency permit issued by the New York State Department of Environmental Conservation (NYSDEC.) Councilman D’Esposito noted, “Our biggest challenge was obtaining the necessary permits that were needed to begin the Sea Dog Creek restoration project.”

Hempstead town officials are now planning to start additional dredging projects slated to begin in the fall of 2018.