Urbanization, Hydrology, and Nitrogen Export. Ryan Albert 2/26/08. Outline. General Background Accotink and Pohick Study Introduction Estimating Urban Land Use Water Quality Analysis Discussion . Nonpoint Sources of Pollution.
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NURP Study: Homer et al, 1994
Image from Jantz et al. (2004)
Based on using Remote Sensing Data (NLCD 1992 and MRLC 2000) and Fairfax County Annual Demographic Household Data
Uses a density of households per unit of urban area ratio to determine urban area for years in which remote sensing data are not available.Estimating Historic Land Use Change
. and Fairfax County Annual Demographic Household DataUrban Land Use Projections
Based on Previous GMU sample sites. and Fairfax County Annual Demographic Household Data
Site at USGS gauge station added
Ammonia and Fairfax County Annual Demographic Household Data