Tampa Bay Dredged Hole Habitat Assessment Project: Management Recommendations Project Objectives Determine habitat value of each hole Develop management strategies for each hole No Change Complete filling and restoration of seagrasses Partial filling Enhance habitat value Project Tasks Fisheries Monitoring Trawl and Seine Samples- inside and outside holes Directed Hole-and-Line Sampling Recreational & Commercial Angler Use Benthic Monitoring Benthic Organisms Physical Parameters- DO, sediment chemistry Physical Characteristics Acreage, Depth & Surrounding Depth of holes Location Overall Rankings OPTION 3 (of 4) Fisheries and Benthos Weighted Equally Ranking Uses Numerical Values assigned by FIM or Benthos Fisheries: 9 holes ranked (BIG and NEP not ranked) Value= 10 - ranked # = x 9 9 e.g., Shore Acres (#1, “best”) = 10 – 1 = 9 =1 9 9 Benthos: 11 holes ranked Value = 12- ranked # = x 11 11 Fisheries Score + Benthos Score (If no Fisheries, only Benthic 2 e.g., BIG, NEP1) Overall Ranked Comparison: Lowest score = lowest habitat value Fisheries x 1, Benthos x 1 1.200 1.000 0.955 0.833 Combined Score 0.800 0.672 0.687 0.707 0.600 0.530 0.545 0.400 0.293 0.200 0.101 0.359 0.180 0.000 MCK NEP1 NSH CYP AIR BIG Dredged Hole WSK1 MAC WSK2 GAN SHA Shore Acres Score: 0.955 Rank: 1of 11 (highest ranked) Angler Use: Recreational: #8 (tied) Commercial: #4 (tied) Rationale: Highest ranked hole for fisheries and 2nd highest ranked for benthos. Objections: None Management Recommendation: Keep Hole As IsDo Not Fill Gandy Channel North Score: 0.833 Rank: 2 of 11 Angler Use: Recreational: #3 (tied) Commercial: #4 (tied) Rationale: Highly ranked hole by benthic Objections: None Management Recommendation: Keep Hole As IsDo Not Fill Whiskey Stump Key 2 (East) Score: 0.707 Rank: 3 of 11 Angler Use: Recreational: #1 Commercial: #9 (tied for last) Rationale: Original recommendation upheld. Hole provides unique fish habitat. Objections: None Management Recommendation: Keep Hole As Is- Do Not Fill Mac Dill Air Force Base Runway Extension Score: 0.687 Rank: 4 of 11 Angler Use: Recreational: #10 (access restricted) Commercial: #6 Rationale: Hole was historically utilized by recreational fishers before security restrictions. More protected refuge for fish, as recreational fishers are prohibited. Hole partially filled in 1990s. Objections: Peter Clark Management Recommendation: Keep Hole As Is- Do Not Fill Further Whiskey Stump Key 1 (West) Score: 0.672 Rank: 5 of 11 Angler Use: Recreational: #1 Commercial: #9 (tied for last) Rationale: Original recommendation upheld. Hole provides unique fish habitat. Objections: None Management Recommendation: Keep Hole As Is- Do Not Fill Big Island Cut Score: 0.545 (Benthic only) Rank: 6 of 11 Angler Use: Recreational: #2 Commercial: #1 Rationale: Objections: None Management Recommendation: Keep Hole As IsDo Not Fill St. Petersburg/Clearwater Airport East Score: 0.530 Rank: 7 of 11 Angler Use: Recreational: #5 Commercial: #2 Rationale: Objections: Management Recommendation: Keep Hole as is Do Not Fill Score: 0.359 Rank: 8 of 11 Angler Use Cypress Point Recreational: #6 Commercial: #3 Rationale: Erosion problem along eastern beach. Filling could protect against wave energy and support City of Tampa project Objections: Jan Platt Management Recommendation: Partial filling to stabilize the shoreline. Fill to various depths, including to the photic zone. Northshore Beach Score: 0.293 Rank: 9 of 11 Angler Use: Recreational: #8 (tied) Commercial: #6 (tied) Rationale: Ranked poorly for fisheries and benthos. Objections: None Management Recommendation: Fill to surrounding area depth and encourage seagrass expansion. Northeast St. Petersburg Borrow Pit 1 Score: 0.180 (Benthic only) Rank: 10 of 11 Angler Use: Recreational: #3 (tied) Commercial: #6 (tied) Rationale: Could be developed as a SWIM project. Opportunity for restoration. Objections: None Management Recommendation: Shallow up hole to between -10 and +3 feet to address hypoxia. Develop intertidal planting shelves. McKay Bay Score: 0.101 Rank: 11 of 11 (lowest ranked) Angler Use: Recreational: #6 (tied) Commercial: #9 (tied for last) Rationale: Lowest ranked hole for both fisheries and benthos Objections: None Management Recommendation: Fill hole to surrounding depths Recommendation Summary * Based on existing habitat value KEEP AS IS Shore Acres Gandy Channel North Whiskey Stump Key 2 (East) Mac Dill Air Force Base Runway Extension Whiskey Stump Key 1 (West) Big Island Cut St. Petersburg/Clearwater Airport East Recommendation Summary *Based on existing habitat value CONSIDER MODIFICATION Cypress Point- Partial filling to stabilize the shoreline. Fill to various depths, including to the photic zone. Northshore Beach- Fill to surrounding area depth and encourage seagrass expansion. Northeast St. Petersburg Borrow Pit 1- Shallow up hole to between -10 and +3 feet to address hypoxia. Develop intertidal planting shelves. McKay Bay- Fill hole to surrounding depths