Peter is a Research Geographer with the U.S. Geological Survey’s Eastern Geographic Science Center and has worked at the Chesapeake Bay Program Office since 2002. Peter leads the Land Data Team at the CBPO which conducts research on land change characterization, analysis, and modeling in the Chesapeake Bay Watershed. Peter led the development of the Chesapeake Bay Land Change Model and urban land use data for use in the Phase 5.x watershed models. Currently, Peter is exploring alternative methods for simulating urban growth, initiating a study on the impact of impervious surface patterns on water quality, and pursuing the concept of crediting land-use planning as a “Best Management Practice” in the context of the Bay TMDL from both modeling and policy perspectives.