Picayune Watershed Water Quality Feasibility Study
Feasibility Study
The intent of the Picayune Watershed Water Quality Feasibility Study is to improve the quality of water entering the Collier-Seminole State Park, Rookery Bay Estuarine Research Reserve, and the Cape Romano – Ten Thousand Islands National Wildlife Refuge. Water flows entering these protected areas currently have increased levels of phosphorus and nitrogen. The feasibility study will review existing data, evaluate nutrient inflow levels and recommend treatment technologies.
Map of Study Area

Identified Technologies
Treatment technologies will be evaluated against their a) capacity to reduce nutrient inflows, primarily Total Phosphorous and secondarily Total Nitrogen and b) ability to be installed within the boundaries of the study area south of US 41 (project sites must be under public ownership and appropriately sized). The following technologies have been identified for review:
- Applicable
- Constructed treatment wetlands
- Flow equalization basins
- Spreader berms and canals
- Restored wetlands
- Offline alum treatment
- Air diffusion systems
- Periphyton/submerged aquatic vegetation growth & removal
- Non-applicable
- Algal scrubbers
- Floating treatment wetlands
- Bold and Gold®
- NutriGone Media™
- Downstream Defender®
- Aquifer storage and recovery
- Deep well injection
Status, Resources, Next Steps and Public Involvement
Team members have compiled an Information Collection Summary Report. This report will provide findings for each of the identified technologies. It will also recommend more detailed research on the technologies that will be most applicable to the study area.
To receive information and updates about the Picayune Watershed Water Quality Feasibility Study, register by using the link below:
Fact Sheets
Partner Agencies
South Florida Water Management District
Florida Department of Environmental Protection
Florida Department of Agriculture and Consumer Sciences
United States Fish and Wildlife Service
Lipman Family Farms
Collier County Pollution Control
Conservancy of Southwest Florida