Lake Manor Public Education Sign
The City of Naples just restored Lake Manor! A $1,000,000 project that literally brings new life to an old dying lake. Lake Manor is a stormwater collection pond that was created in the 1950s to store water and prevent flooding in the Lake Park neighborhood. An additional benefit of the lake is its ability to remove pollution in stormwater runoff that eventually flows to the Gordon River and Naples Bay. However, the last six decades took a toll on the lake and a thick layer of pollutant laden sediment, trash and debris accumulated on the bottom. Two automobiles from the 1990’s were even pulled from the lake! With all of this accumulated pollution, the lake really couldn’t remove pollutants from stormwater runoff like it once did. The restoration project was completed in February, 2016 and it is expected that the lake can now remove 80% more pollutants from Stormwater than before. Some of the project’s accomplishments include:
Quality Enterprises USA, Inc. was awarded a $1.3 million contract to excavate sediment from within the Port Royal canal system. The contractor mechanically excavated approximately 20,000 Cubic Yards of sediment from the canals using an excavator mounted on a barge. Three hopper barges worked in rotation to transport the excavated sediment to the dewatering site at the City Yard on Riverside Circle before final disposal at the Collier County Landfill. Erickson Consulting Engineers, Inc. (ECE) completed the design for the project and procured the required regulatory permits from the State and Federal government. ECE provided construction oversight and engineering services during execution of the contract by Quality Enterprises.
What part of the canals were dredged and how deep?
Click here for a project map showing the location of dredging and canal depths.
Design Dredge Depth (ft NAVD)
Design Dredge Depth (ft MLW)
Doubloon Bay Entrance
Harbor Head Entrance
*The project permits provide the contractor with a 1 ft overcut tolerance below the design dredge depth.
Design Dredge Volume (CY)
Maximum Pay Dredge Volume (CY)
Champney Bay and Doubloon Bay
Notes: (1) Galleon Cove volume is inclusive of approximately 65 CY of oyster shell requiring removal. (2) Maximum pay volume assumes 100% overdredge of four inches below the design elevation.
What criteria was used to determine if a canal needs to be dredged?
The purpose of the Project was to restore the accessible, navigable canal system for the residents of the Port Royal subdivision. Working with the City, the Port Royal residents developed the governing depth required for navigability for their specific canal(s) based on the historic and current use by residents. Surveys were conducted and location(s) within the canals which were shallower than the controlling depth were identified for dredging.
On December 14, 2011, the City Council approved Resolution No. 11-12978 to establish a special assessment district for the purpose of dredging canals in the Port Royal area. The resolution called for the removal of approximately 19,120 CY from select areas within the canal system, primarily near the canal entrances, to provide boater access to all canals. On January 18, 2012, the City Council approved a contract with Erickson Consulting Engineers, Inc. (ECE) to design and permit the canal dredging effort according to the conditions as set forth in the City Resolution.
Click Here to view the Resolution.
How much sediment was removed and where did it go?
The contractor mechanically excavated approximately 20,000 Cubic Yards of sediment from the canals using an excavator mounted on a barge. Three hopper barges worked in rotation to transport the excavated sediment to the dewatering site at the City Yard on Riverside Circle before final disposal at the Collier County Landfill.
How was water quality protected during the dredging activities?
All work was performed in compliance with State water quality standards under Section 401 of the Clean Water Act and in accordance with State and Federal permits. The contractor employed the use of turbidity curtains to confine turbidity to the immediate vicinity of active work. Turbidity monitoring was employed to ensure that turbidity does not exceed State standards.
How were fish and wildlife be protected during the dredging activities?
All work was performed in compliance with the Marine Mammal Protection Act, the Endangered Species Act, the Florida Manatee Sanctuary Act, the FWC Standard Manatee Conditions for In-Water Work and the NMFS Sea Turtle and Smalltooth Sawfish Construction Conditions. All in-water operations were shutdown if a manatee or other protected species came within 50 ft of the dredging activity. Activities did not resume until the protected species moved beyond the 50 ft radios of the project operation.
~~~~~~ Special Assessment Bills ~~~~~~
Because this dredging project was established as a special assessment, the cost of the project was divided among the affected property owners.
Links of Interest
Project Plans / Maps
The George Washington Carver Apartment Complex (GWCA) was constructed in 1981 to provide affordable housing in the City of Naples. George Washington Carver Apartments has a total of 70 units, all of which are Section 8 assisted living units. 25% of Florida properties and 26% of all properties across the country have Section 8 rental subsidies. George Washington Carver Apartments is subject to regular physical inspections to insure the property is providing a safe, clean living environment for its residents. These inspections are referred to as REAC inspections. A division of HUD, the Real Estate Assessment Center is responsible for carrying out the inspections.
The on-site water management plan at GWCA originally included an open retention between the east side of the apartments and the basketball courts at the River Park Community Center. A 5 foot high chain link fence was installed around the perimeter of the open retention area that held 3 feet of water all summer and was a breeding ground for mosquitoes. The City received a grant in 1996 to install an underground retention system which turned the area into usable green space and eliminated the standing water and mosquito problems.
Over the years the underground retention system experienced some unknown damage allowing infiltration into the system creating sinkholes in numerous areas and causing flooding in the GWCA parking lot.
The City received a Grant in May 2013 to do spot repairs to the system. An RFP was advertised and only one proposal was received. It was deemed non-responsive and 400% over the Grant amount. Additional Grant funding was obtained in June 2015 and the Project was re-advertised as an ITB for a full replacement. Construction began in July 2015 and was completed in August 2015. To date, the City of Naples has spent nearly $160,000 on this project.