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)
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 10,330.4 6,963.3 305.5 161.5 1,185.9 686.8 21.6 936.7 69
Alligator Creek 6,973.3 2,978 2,095.4 16.9 13.7 15.2 1,320.3 533.8
Catfish Creek Oyster data linked to Little Sarasota Bay
Clower Creek Oyster data linked to Little Sarasota Bay
Curry Creek Oyster data linked to Roberts Bay (Venice)
Elligraw Bayou Oyster data linked to Little Sarasota Bay
Forked Creek 5,156.1 1,207.4 84.2 276 1,404.2 4.3 991.4 1,188.6
Fox Creek* 178.5 - - - - - - 140.9 37.6
Gottfried Creek 15,372.1 8,628.8 2,980.5 244.9 867.4 714.7 0.5 1,414.3 521.1
Hatchett Creek Oyster data linked to Roberts Bay (Venice)
Hudson Bayou 2,917.3 1,186.5 132.5 616.4 2.7 618.7 360.5
Matheny Creek 109.87 1.7 58 8.7 0.9 40.5
North Creek 3,658 2,461.9 230.2 55.7 825.5 84.7
Phillippi Creek 25,214 12,660.4 1,747.6 92.1 612.5 7,048.5 3,052.9
Salt Creek* 636.8 - - - 14.2 24.2 0.5 553.4 44.5
Shakett Creek 6,339.4 1,092.7 76.8 143.6 1,169.3 0.5 3,203.2 653.3
South Creek 11,004.4 2,150.7 2,973.8 691.7 147.4 1,347.8 4.1 3,506.3 182.6
Whitaker Bayou 1,362.4 - - - 984.4 78.2 - 146.2 153.6
Woodmere Creek Oyster data linked to Lemon Bay

* Fox and Salt creeks are not coastal creeks.

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 7,801.2 0.37% 2,484.6 119.9 887.6 1,487.8 660.9 434.2 1,612.4 114
Dona Bay 43,663.9 4.48% 33,445.3 318.1 231.7 850.1 858.6 139.5 6459.1 1361.5
Dryman Bay 10,381 1.52% 4,228.2 5,459.4 359.2 114.3 65.5 27.6 66.3 24.5
Lemon Bay 42,611.9 0.16% 24,830.8 3,171 5,051.1 4,188.2 719.9 117.5 3,408.7 1,124.8.3
Little Sarasota Bay 66,154.7 0.89% 49,921.5 3,286.6 3,129.8 4,529.5 351.4 251.3 4,120.8 563.8
Lyons Bay 11,646.3 2.64% 9,701.4 82.3 463.6 1,189.9 15.6 193.5
Roberts Bay Sarasota 44,015.8 0.93% 19,753.9 888.2 3,323.5 17,094.1 545.2 130.9 1,326.1 953.9
Roberts Bay Venice 23,091.7 1.98% 13,598 442.8 730.7 1,742.5 403.1 176 3,512.6 2,486
Sarasota Bay 29,409.3 0.03% 13,102.5 1,215.1 11,676.7 1,249 599.2 1,019.3 547.6
Unnamed Creek/Bay 1,685.6 267.3 1,018.9 308.7 19.5 71.2