An edition of: WaterAtlas.orgPresented By: Sarasota County, USF Water Institute

Sarasota County Water Atlas


Creek Oyster Mapping Summary

Oysters were first mapped in seventeen Sarasota County coastal creeks: Whitaker, Hudson, and Elligraw Bayous; and Phillippi, Matheny, Clower, Catfish, North, South, Shakett, Curry, Hatchett, Alligator, Woodmere, Forked, Gottfried, and Ainger Creeks. The original goal of the project was to locate and identify all oyster habitat types and devise a method to record their location. For the creeks, it was also to determine how far upstream oysters occurred. Aerial maps of the creeks were created and laminated. Staff used permanent markers to draw and code the oyster habitat types directly on the maps. The data was then transferred to maps in ARCGIS for storage, management, and analysis.

Creek Total Coverage Area
(m2)
Percent Coverage
(all habitats)
Coverage Area (m2) by Oysters/Habitats
Oyster Reefs (R) Mangrove Apron (MA) Mangrove Root (MRO) Seawall (SW) Rip/Rap (RR) Piling (P) Clump (C) Shell (S)
Ainger Creek 13,702.1 2.61% 9,758.2 305.5 142.2 1,563.5 891.1 19.8 952.8 69.0
Alligator Creek 11,137.9 2.48% 4,436.1 3,408.1 91.4 13.7 15.2 2,448.0 725.3
Bayou Louise 326.2 1.69% 25.1 236.2 2.0 62.9
Blind Pass 1,013.0 1.30% 222.5 177.7 595.2 17.5
Catfish Creek 2,869.7 2.29% 1,819.3 237.4 55.7 654.7 102.6
Clower Creek 797.8 5.18% 552.4 146.4 60.4 38.5
Curry Creek Oyster data linked to Roberts Bay (Venice)
Elligraw Bayou Oyster data linked to Little Sarasota Bay
Forked Creek 5,203.0 2.20% 1,207.4 84.2 276.0 1,404.2 16.6 4.3 1,021.6 1,188.6
Gottfried Creek 20,368.1 3.69% 12,382.9 2,980.5 314.5 1,906.2 767.5 0.5 1,429.6 586.4
Grand Canal 9,126.8 2.42% 81.9 90.5 8,786.0 149.6 10.8 8.0
Hansen Bayou 623.6 0.94% 188.2 424.5 2.8 8.0
Hatchett Creek Oyster data linked to Roberts Bay (Venice)
Hudson Bayou 3,069.8 3.65% 1,331.0 132.5 624.4 2.7 618.7 360.5
Juno Canal 125.2 2.48% 123.4 1.8
Jupiter Canal 184.5 4.79% 6.9 123.1 54.5
Mars Canal 120.7 2.47% 120.7
Matheny Creek 112.8 0.60% 1.7 61.0 8.7 0.9 40.5
Minerva Canal 137.9 4.93% 12.5 26.2 44.2 55.1
Nettie Bayou 694.5 1.12% 215.9 154.0 220.0 35.5 69.0
North Creek 3,816.2 1.82% 1,975.0 450.1 1,368.1 23.0
Phillippi Creek 26,929.9 3.54% 13,916.2 2,049.3 137.2 612.5 7,118.0 3,096.7
Red Lake 757.6 0.48% 58.0 617.6 22.0 5.1 27.5 27.5
Salt Creek (Laurel)* 591.6 2.35% 14.2 24.2 0.5 542.4 10.3
Shakett Creek 6,563.1 0.98% 1,092.7 76.8 143.6 1,169.3 0.5 3,355.2 725.0
South Coconut Bayou 472.7 0.56% 156.6 188.0 81.9 2.2 15.7 28.2
South Creek 11,003.3 3.93% 2,150.7 2,973.8 691.7 147.4 1,346.7 4.1 3,506.3 182.6
Whitaker Bayou 1,284.2 2.66% 984.4 146.2 153.6
Woodmere Creek Oyster data linked to Lemon Bay

* Salt Creek (Laurel) is not a coastal creek.

Bay Oyster Mapping Summary

After the oysters were mapped in the creeks, they were mapped in ten Sarasota County Bays: Sarasota Bay (Sarasota County area); Little Sarasota Bay; Roberts Bay North; Little Sarasota Bay; Dryman Bay; Blackburn Bay; Lyons Bay; Dona Bay; Roberts Bay; and Lemon Bay. A more streamlined method of data collection was enabled through the acquisition of a tablet computer. Staff was able to record the data directly into ARCGIS; thus, eliminating the double effort of first recording the data onto laminated aerial maps. Two additional metrics, piling oysters and oyster condition, were also added.

Bay Total Coverage
Area (m2)
Percent Coverage
(all habitats)
Coverage Area (m2) by Oysters/Habitats
Oyster Reefs (R) Mangrove Apron (MA) Mangrove Root (MRO) Seawall (SW) Rip/Rap (RR) Piling (P) Clump (C) Shell (S)
Blackburn Bay 7,890.9 0.34% 2,484.6 119.9 887.6 1,559.3 658.4 454.8 1,612.4 114.0
Dona Bay 44,329.9 3.44% 33,445.4 318.1 246.7 922.2 879.7 139.5 7,016.8 1,361.5
Dryman Bay 10,387.5 1.50% 4,228.2 5,459.4 395.2 117.3 69.1 27.6 66.3 24.5
Lemon Bay 29,825.4 0.23% 16,765.7 1,858.3 4,289.4 3,100.6 645.5 117.5 2,207.9 840.5
Little Sarasota Bay 61,319.6 0.79% 47,814.1 2,829.3 2,805.7 3,938.0 351.4 233.8 2,863.0 484.3
Lyons Bay 12,127.2 2.07% 9,701.4 82.3 730.9 1,393.0 27.2 192.4
Roberts Bay Sarasota 31,373.8 0.63% 18,043.7 586.6 2,657.7 7,573.1 390.5 60.9 1,151.3 910.0
Roberts Bay Venice 22,420.0 1.39% 13,598.0 442.8 715.8 1,670.4 376.1 176.0 2,954.9 2,486.0
Sarasota Bay 29,007.7 0.06% 12,958.0 1,189.9 11,431.4 1,327.1 597.2 956.3 547.6

Creek and bay boundaries were delineated by Sarasota County staff for this analysis and may differ from the normal waterbody acreages presented on the Water Atlas.

Bay surface area measurements used in calculations: Blackburn Bay - 2,296,617 m2, Dona Bay - 1,288,003 m2, Dryman Bay - 694,110 m2, Lemon Bay - 13,064,015 m2, Little Sarasota Bay - 7,747,621 m2, Lyons Bay - 585,598 m2, Roberts Bay Sarasota - 5,011,265 m2, Roberts Bay Venice - 1,613,771 m2, Sarasota Bay - 44,807,235 m2