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January 15, 2003USDA Conesus Lake Project GIS Modeling of Source Areas of Nonpoint Source Pollution James Zollweg, Ph.D. SUNY-Brockport Earth Sciences Water Resources Program Geographic Information Systems Program
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January 15, 2003USDA Conesus Lake Project Overview Brief Biography Mapping and Illustration Using GIS Computation of P-Index Runoff and Soil Moisture Modeling with SMR Hydrologic and Chemical Controls on P Export previous results new directions
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January 15, 2003USDA Conesus Lake Project Overview Brief Biography Mapping and Illustration Using GIS Computation of P-Index Runoff and Soil Moisture Modeling with SMR Hydrologic and Chemical Controls on P Export previous results new directions
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January 15, 2003USDA Conesus Lake Project Brief Biography 1994: Ph.D. (Cornell University) – “Effective Use of GIS in Rainfall-Runoff Modeling” 1993-96: USDA – ARS - Pasture Systems and Watershed Management Research Lab – “Optimizing Nutrient Management to Sustain Agricultural Ecosystems and Protect Water Quality” 1996-present: SUNY-Brockport – GIS and Water Resources (wetlands, flood forecasting)
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January 15, 2003USDA Conesus Lake Project
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January 15, 2003USDA Conesus Lake Project Overview Brief Biography Mapping and Illustration Using GIS Computation of P-Index Runoff and Soil Moisture Modeling with SMR Hydrologic and Chemical Controls on P Export previous results new directions
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January 15, 2003USDA Conesus Lake Project Mapping / Illustration Using GIS Reports and Presentations Public information www.blackcreekwatershed.org Data Explorations Visualization discovery insight
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January 15, 2003USDA Conesus Lake Project Mapping / Illustration Using GIS
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January 15, 2003USDA Conesus Lake Project Overview Brief Biography Mapping and Illustration Using GIS Computation of P-Index Runoff and Soil Moisture Modeling with SMR Hydrologic and Chemical Controls on P Export previous results new directions
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January 15, 2003USDA Conesus Lake Project Computation of P-Index Preservation of spatial variability Computational efficiency Visualization of results Facilitates improved understanding of physical interactions
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January 15, 2003USDA Conesus Lake Project Overview Brief Biography Mapping and Illustration Using GIS Computation of P-Index Runoff and Soil Moisture Modeling with SMR Hydrologic and Chemical Controls on P Export previous results new directions
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January 15, 2003USDA Conesus Lake Project Runoff and Soil Moisture Modeling with SMR Variable Source Area Hydrology Critical Source Areas for Nonpoint Source Pollution
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January 15, 2003USDA Conesus Lake Project Runoff and Soil Moisture Modeling with SMR SMR – The Soil Moisture Routing Model Product of Zollweg’s Thesis GIS is the Ideal Environmental Modeling Platform Spatially-distributed, Physically-based
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January 15, 2003USDA Conesus Lake Project Runoff and Soil Moisture Modeling with SMR Coded and Running in Lennon Hall Using Visual BASIC within ArcGIS 8.2 Complete Control of Code Easy to Integrate Additional Environmental Modeling Concepts Private Function HM_NeighborFlow(sStorage As String, _ pInterflowRaster As IRaster, ierr As Integer) As Boolean '----------------------------------------------------------------------------- ' The storage is adjusted for the amount leaving, the interflow and the amount ' entering from neighbor cells. The maps north, northeast, east, southeast, ' south, southwest, west and northwest represent the fraction of flow heading ' in 'that' direction from the current cell. Therefore to find the amount ' entering the current cell one needs to look at the neighbor cells and the ' corresponding maps which point to the current cell. For example, if the ' current cell is (i,j) and one looks to the north (i-1,j) one would use the ' south map to get the fraction of flow since the current cell is south of its ' north neighbor. ' --------------------------------------------------------------- ' | cell: (i-1, j-1) | cell: (i-1, j) | cell: (i-1, j+1) | ' | map: southeast | map: south | map: southwest | ' --------------------------------------------------------------- ' | cell: (i-1, j) | cell: (i, j) | cell: (i+1, j+1) | ' | map: east | map: none | map: west | ' --------------------------------------------------------------- ' | cell: (i+1, j-1) | cell: (i+1, j) | cell: (i+1, j+1) | ' | map: northeast | map: north | map: northwest | ' ---------------------------------------------------------------
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January 15, 2003USDA Conesus Lake Project Overview Brief Biography Mapping and Illustration Using GIS Computation of P-Index Runoff and Soil Moisture Modeling with SMR Hydrologic and Chemical Controls on P Export previous results new directions
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January 15, 2003USDA Conesus Lake Project (1996)
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January 15, 2003USDA Conesus Lake Project Brown Watershed – Tributary of WD38, Klingerstown, PA
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January 15, 2003USDA Conesus Lake Project
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January 15, 2003USDA Conesus Lake Project
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January 15, 2003USDA Conesus Lake Project Overview Brief Biography Mapping and Illustration Using GIS Computation of P-Index Runoff and Soil Moisture Modeling with SMR Hydrologic and Chemical Controls on P Export previous results new directions
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January 15, 2003USDA Conesus Lake Project More Concepts to Try Chemical dynamics of P Export Transport processes Erosion modeling and sediment transport Pathogen transport
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January 15, 2003USDA Conesus Lake Project Goals Support “mechanics” of project Better understanding of watershed P dynamics Continue my work and achieve mutual benefit!
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