15th Ave N. Lake Improvements Lake 19

The City of Naples is finalizing project plans to improve the water quality of 15th Avenue N Lake which will enhance the lake creating a healthy, attractive and environmentally thriving stormwater feature for the surrounding community. The functions of 15th Avenue N Lake include storing, treating, and directing stormwater which then discharges through pipes into the Conservancy of Southwest Florida’s filter marsh. The lake also mitigates flooding, reduces flows during rainfall events and reduces the discharge of pollutants to the filter marsh which discharges into the Gordon River. Each of these functions are expected to be improved with this project by removing sediment from the lake bottom.

Lake 19
15th Avenue N. Lake

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The lake will be dredged and all exotic vegetation will be removed. The project also provides the opportunity to plant diverse wetland vegetation along the northern shoreline to form a littoral shelf. A littoral shelf is a shallow shelf in a water body that is planted with native aquatic vegetation. The purpose of a littoral shelf is to help filter out the nutrients and minerals in the water prior to it leaving the lake. Some areas of the 15th Avenue N. Lake shorelines are eroded and overly steep and could benefit from littoral shelf modifications and plantings. Littoral shelf plantings and modifications would limit nutrients and runoff from the roadway from entering the lake and help stabilize the shoreline. They will also provide additional nutrient uptake within the lake from the additional littoral shelf plants that are dependent on the available nutrients within the lake targeted for removal.

A Nutrient Separating Baffle Box is used for water quality treatment at the inflow of storm drains. The box primarily removes sediment and suspended solids from stormwater. The intent is to place one at the stormwater outfall at the north end of the lake.

Submersed aerators help reoxygenate lake water and floc logs add a second layer of water quality improvement by removing unwanted nutrients.  The combination of these two water quality improvement tools impedes growth of algae by moving water and creating a non-stagnant environment.

A sidewalk extension will be incorporated into the project on the north side of the lake and include informational signage.

In one option shown on the right side of the page below, the project would include a reinforced grass swale/pavers with parking.

Proposed Renderings

Rendering - Lake 19 - Proposed sidewalk extension on north side of lake
Rendering - Lake 19 - Proposed sidewalk extension on north side of lake with reinforced grass swale/pavers parking
Lake 19 - Proposed littoral shelf with native aquatic vegetation
Rendering - Lake 19 - Proposed nutrient box

We want your input

Public input is very important in the design of Lake 19 15th Avenue N. Lake project.

Please provide your comments on the Contact Us page.