Presentation on theme: "Distribution and Occurrence of Nitrate-Nitrogen and Total Phosphorus in the Water Resources of the Suwannee River Water Management District David Hornsby."— Presentation transcript:
Distribution and Occurrence of Nitrate-Nitrogen and Total Phosphorus in the Water Resources of the Suwannee River Water Management District David Hornsby Dissertation Proposal May 27 th, 2005
Objectives To determine the distribution and occurrences of nitrate-N and total phosphorus in the SRWMD Define the influence on water quality and quantity due to the interaction of ground and surface water in the Suwannee River basin Define ground water basins in the SRWMD Integration of the findings with landuse/landcover to assess influence on water quality
Hypothesis Impacts on the occurrence and distribution of nitrate-N and total phosphorus in the water resources of the Suwannee River Water Management District can be attributed to landuse/landcover
Karst Terrain formed by the dissolution of underlying limestoneTerrain formed by the dissolution of underlying limestone Internal Drainage: SW=GWInternal Drainage: SW=GW Characterized by caves, caverns, sinkholes, sinking streams, springs, etc.Characterized by caves, caverns, sinkholes, sinking streams, springs, etc.
Nitrate-N Trends Suwannee River Increasing trend for Nitrate-N concentration in Suwannee River at Branford, FloridaSuwannee River Increasing trend for Nitrate-N concentration in Suwannee River at Branford, Florida Santa Fe River Data from the Surfacewater Quality Monitoring shows an increase in Nitrate-N concentrations in the Lower Santa Fe RiverSanta Fe River Data from the Surfacewater Quality Monitoring shows an increase in Nitrate-N concentrations in the Lower Santa Fe River
High/Low Flow High/Low Flow Nitrate-N 00.20.40.60.811.21.4 S.R. at Gopher R. Fowler's Bluff Wilcox Rock Bluff Branford Luraville Dowling Park Ellaville S.R. Above Withla. Suw.Springs White Spring S.R. at SR 6 NOx-N (mg/L) June 1998 (Low) March 1998 (High) Georgia Gulf of Mexico
Suwannee Basin Nitrate-N and TP Loads By Basin 23.8% 23.7% 0.8% 54.1% 0.7% 8.9% 15.5% 5.9% 34.4% 10.8% -4.6% -8.3% -1.6% -10.0% Total Loadings for Water year 2003 4,485 tons Nitrate-N 1,627 tons TP 18.9% -3.7% 12.2% 18.5%
0 5,000,000 10,000,000 15,000,000 20,000,000 25,000,000 30,000,000 Suw Laf Gil Ala Col Union Mad Levy Jef Brad Ham Taylor Dixie Pounds of N per Year 29 14 13 11 9 8 77 6 5 4 3 3 Estimated Annual Nitrogen Inputs SRWMD
Beef Cows 5.8% Dairy Cows 5.4% Poultry 34.1% People 1.0% Fertilizer 48.9% Atmospheric 4.8% Estimated Nitrogen Inputs Suwannee County Total 28,992,636 pounds of N
Outcomes/Products Temporal and spatial distribution of nitrate-N and total phosphorus. GIS coverage of groundwater basins with landuse/landcover. A comparison of water quality to landuse/landcover by groundwater basin. A correlation of landuse/landcover in groundwater basins to water quality. Impacts of landuse/landcover on the ground and surface water quality in the middle Suwannee and lower Santa Fe rivers. Develop a ranking of landuse/landcover to ground and surface water quality.
Acknowledgments Committee Dr. Donald Graetz (Chair) Dr. Tom Obreza Dr. Vimala Nair Dr. Wendy Graham Assistance Suwannee River Water Management District
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