Indian River Lagoon Seagrass Communities (2001)

These data serve as documentation for seagrass coverage in the Indian River Lagoon in 2001. Seagrass coverage was photointerpreted from These data were compiled using the 2001 aerials at 1:24,000 and 1:10,000 photo scale, natural color. Features were classified according to SFWMD/SJRWMD modified FLUCCS using photogrammetric techniques; ground control obtained from GPS survey and USGS DOQQs, aerotriangulation of aerial photography, and stereo compilation using analytical stereoplotters using a minimum mapping unit of 0.25 acres (=0.1 hectares). The horizontal accuracy of the data meets national map accuracy standards (NMAS) for 1:24,000 scale maps (+/- 40 feet). No thematic accuracy assessment was performed. Pre-interpretation groundtruthing was performed on the aerial photography, 200 field points were selected, 100 of the highest priority sites were field checked and additional sites were checked on an ad hoc basis. These data document and inventory seagrasses for the management of the resource, identify "healthy" areas that may deserve special protection efforts, and identify potential "problem" areas that require further investigation. These data are intended for use in documenting large-scale trends in the status of this resource. The Indian River Lagoon (IRL) Surface Water Improvement and Management (SWIM) Plan directs the South Florida and St. Johns River Water Management Districts to map seagrasses in the Indian River Lagoon at two to three-year intervals. For reference access the following documents: Original Metadata Mapping Methods Segments Map Location