Local Solutions

Tidal Backflow

When the water elevation of the waterbody that the drainage systems outfalls into, is higher than the drainage system itself.

Type of Prevention

Flooding for coastal communities has always been an issue, but sea level rise has increased the frequency and severity of inland impacts from tidal flooding. The City of Delray Beach has included infrastructure projects within our Capital Improvement Plan that aim to reduce the effects of flooding to our residents and business owners.

In-line check valves

Inline check valves are an effective and aesthetic method employed to prevent tidal backflow in a drainage system. Due to the ease of installation, low maintenance requirement, and low head-loss, in-line check valves have become the City’s preferred stormwater backflow prevention measure.


Flap Gates are typically installed at stormwater discharge points directly downstream of stormwater pump stations. They must be periodically maintained to ensure a thorough seal to prevent tidal backflow.

Duck Bill

Similar to flap gates, duckbill valves are installed to a headwall or seawall at stormwater discharge points. They require a relative low flow or hydraulic head condition to function, but their exposure to the environment can cause a higher level of maintenance to function properly. The City is currently replacing duckbill valves with in-line check valves.

Seawall Projects

Veterans PARK

Located along the western shore of the Intracoastal Waterway directly north of Atlantic Avenue is comprised of over 650 linear feet of seawall

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City Marina

The City’s municipal marina is located along the western shore of the Intracoastal Waterway between South East 1st Street and South East 2nd Street

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Marine Way is bordered to the north by Veterans Park and Atlantic Avenue, and to the south by City’s municipal marina. The improvements include

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Beach Projects

Beach Nourishment Pre-Construction Engineering

The City has one of the most successful beach maintenance and preservation programs in the United States.

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Beach Nourishment Post-Construction Engineering

The two most recent beach nourishment projects were constructed between January 2013 and May 2014

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Sea Turtle Nesting

The Federal and State permits for beach nourishment require annual sea turtle nesting monitoring on the beach during

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Beach Tilling

The permits for beach nourishment require pre-sea turtle nesting season beach tilling to loosen the sand in anticipation of the nesting season.

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Dune Management Program

The City maintains a thriving coastal beach and strand dune ecosystem. Coastal dunes serve a number of functions, including trapping

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Atlantic Dunes Park

This project aims to improve the Atlantic Dunes Parking Lot drainage and water quality concerns and then repave the entire lot for improved use.

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