Scientific Investigations Report 2007-5238
Prepared in cooperation with
National Park Service
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CONTENTS Abstract Introduction Purpose and Scope Physical Setting Methods Acknowledgments Monitoring Efforts in the Mosquito Lagoon Basin Surface-Water Quality Monitoring Ground-Water Quality Monitoring Atmospheric Deposition Monitoring Water-Quality and Atmospheric Deposition Conditions in the Mosquito Lagoon Basin Surface-Water Quality Salinity, Dissolved Oxygen, and Water pH Major Ions Bacteria Nutrients Water Color, Suspended Solids, and Chlorophyll-a Pesticides and Polychlorinated Biphenyls (PCBs) Trace Elements Ground-Water Quality Geochemical Composition Salinity and Nutrient Content Organic Compounds and Trace Elements Atmospheric Deposition Conditions Assessment of Surface- and Ground-Water Resources Development of a Water-Quality Monitoring Network Summary References Cited |
Surface- and ground-water quality data from the Mosquito Lagoon Basin were compiled and analyzed to: (1) describe historical and current monitoring in the basin, (2) summarize surface- and ground-water quality conditions with an emphasis on identifying areas that require additional monitoring, and (3) develop a water-quality monitoring network to meet the goals of Canaveral National Seashore (a National Park) and to fill gaps in current monitoring. Water-quality data were compiled from the U.S. Environmental Protection Agency’s STORET system, the U.S. Geological Survey’s National Water Information System, or from the agency which collected the data. Most water-quality monitoring focused on assessing conditions in Mosquito Lagoon. Significant spatial and/or seasonal variations in water-quality constituents in the lagoon were quantified for pH values, fecal coliform bacteria counts, and concentrations of dissolved oxygen, total nitrogen, total phosphorus, chlorophyll-a, and total suspended solids. Trace element, pesticide, and ground-water-quality data were more limited. Organochlorine insecticides were the major class of pesticides analyzed. A surface- and ground-water-quality monitoring network was designed for the Mosquito Lagoon Basin which emphasizes: (1) analysis of compounds indicative of human activities, including pesticides and other trace organic compounds present in domestic and industrial waste; (2) greater data collection in the southern part of Mosquito Lagoon where spatial variations in water-quality constituents were quantified; and (3) additional ground-water-quality data collection in the surficial aquifer system and Upper Floridan aquifer. Surface-water-quality data collected as part of this network would include a fixed-station monitoring network of eight sites in the southern part of the basin, including a canal draining Oak Hill. Ground-water quality monitoring should be done routinely at about 20 wells in the surficial aquifer system and Upper Floridan aquifer, distributed between developed and undeveloped parts of the basin. Water samples collected should be analyzed for a wide range of constituents, including physical properties, nutrients, suspended sediment, and constituents associated with increased urban development such as pesticides, other trace organic compounds associated with domestic and industrial waste, and trace elements.
Kroening, S.E., 2008, Assessment of Water-Quality Monitoring and a Proposed Water-Quality Monitoring Network for the Mosquito Lagoon Basin, East-Central Florida: U.S. Geological Survey Scientific Investigations Report 2007-5238, 53 p.
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