The vision for Segment 3 is to restore the St. Augustine Branch, from Monroe Street to Gamble Street, to a greenway and stream, with attenuation areas throughout. The design goal for this project is to create naturally stable meandering low-flow channels with wide floodplains for dissipating energy during high flows, typically occurring at least once each year.  The meandering channels will have stable low stream banks and diverse bed features, including fast-moving riffles in straight reaches and deep pools in meandering bends.  The water quality features anticipated include planted wetland fringes, and wetland creation/restoration.  The project includes enhanced treatment level to improve water quality in the Capital Cascade Trail ponds/ditch system in order to meet State of Florida Class III water quality standards and the anticipated pollutant load reductions required by FDEP’s Total Maximum Daily Load (TMDL) program. 

The Segment 3 conceptual design includes several large stormwater facilities.  These facilities are seen as improvements that will serve both stormwater treatment and recreational objectives.  Coal Chute Park is planned for development along this segment with an approximately 2.6-acre pond that will serve as an off-line stormwater treatment facility to provide treatment for 20-acres of new impervious surface area or retrofit for existing facilities.  This stormwater facility also has the potential to support some of the stormwater needs for the redevelopment of Gaines Street which is vital for attracting new development along this corridor.  This pond will be connected to the St. Augustine Branch ditch which feeds Munson Slough.  The Coal Chute Pond will offer a park-like environment similar to Martha Wellman Park, a completed Blueprint stormwater project.

A 12-foot trail will be constructed along the side of the improved St. Augustine Branch.  This trail will provide biking and pedestrian access in the highly urban area along the Gaines Street Revitalization corridor between Florida State University and Florida Agricultural and Mechanical University, and will connect Cascade Park to the St. Marks Trail.