NWFWMD Water Resources Special Report 02-1

NITRATE LOADING AS AN INDICATOR OF NONPOINT SOURCE POLLUTION IN THE LOWER
ST. MARKS-WAKULLA RIVERS WATERSHED

This report documents efforts to describe the input, movement and fate of nitrogen in ground and surface waters in the lower St. Marks/Wakulla river basins. The investigation primarily describes conditions found in the Woodville karst plain region of southern Leon and Wakulla counties. Nitrogen loads to the landscape from various sources are estimated and incorporated into a nutrient budget for the study area. Insights into ground water/surface water interactions on the karst plain are also given.

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Single file, for high-speed Internet connections

Nitrate Loading as an Indicator of Nonpoint Source Pollution in the Lower St. Marks-Wakulla Rivers Watershed by Angela Chelette, Thomas R. Pratt and Bruce G. Katz, 2002. Water Resources Special Report 02-1. One zipped Acrobat file, with all maps included (31.46 megabytes).

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Multiple files, for low-speed Internet connections

Nitrate Loading as an Indicator of Nonpoint Source Pollution in the Lower St. Marks-Wakulla Rivers Watershed by Angela Chelette, Thomas R. Pratt, and Bruce G. Katz 2002. Water Resources Special Report 02-1. Text portion of the report, only. (1.41MB)

Figure 1 - Area of Investigation (650 kb)
Figure 2 - Land Use Classifications Within the Zone of Contribution (4.85 MB)
Figure 8 - Location of Wells Used for Water Level Monitoring (376 kb)
Figure 9 - Location of Project Sampling Sites (773 kb)
Figure 10 - Principal Karst Features (414 kb)
Figure 17 - Principal Physiographic Features (270 kb)
Figure 18 - Surface Water Basins and Principal Surface Water Features (742 kb)
Figure 19 - Surface Geology (2.04 MB)
Figure 22 - Potentiometric Surface of the Floridan Aquifer, Southern Leon and Wakulla Counties, January 1999 (393 kb)
Figure 23 - Potentiometric Surface of the Floridan Aquifer, Southern Leon and Wakulla Counties, August 1999 (390 kb)
Figure 24 - Potentiometric Surface of the Floridan Aquifer, Southern Leon and Wakulla Counties, March, 2000 (391 kb)
Figure 25 - Ground Water Flow Directions (458 kb)
Figure 35 - Location of Wells Used in 1997 Sampling Event (1.0 MB)
Figure 36 - Compilation of NO₃-N and NO₂+NO₃-N Concentrations (938 kb)
Figure 37 - NO₂ + NO₃ - N Concentrations, 1999 - 2000 (776 kb)
Figure 38 - Dissolved Organic Carbon Concentrations, 1999 - 2000 (776 kb)
Figure 39 - Dissolved Oxygen Concentrations, 1999 - 2000 (779 kb)
Figure 40 - pH, 1999 - 2000 (774 kb)
Figure 41 - Specific Conductivity, 1999 - 2000 (777 kb)
Figure 42 - Orthophosphate Concentration, 1999 - 2000 (775 kb)
Figure 43 - Location of City of Tallahassee Public Supply Wells (873 kb)
Figure 46 - Wastewater Treatment Facility Locations with Major Effluent and Residual Disposal Areas (844 kb)
Figure 47 - Southeast Sprayfield Monitor Well Locations (5.44 MB)
Figure 49 - Southwest Sprayfield and Residual Disposal Area Monitor Well Locations (5.61 MB)
Figure 53 - Locations of OSDS in Semi-Confined and Unconfined Portions of Leon and Wakulla Counties (1.13 MB)
Figure 56 - Water Budget for Wakulla Springs Contributory Area (681 kb)

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