Barbara P Buttenfield, University of Colorado Lawrence V. Stanislawski, CEGIS-USGS babs @colorado.edu lstan@usgs.gov Through the Looking Glass: Designing a Multi-Scale National Hydrographic Database Supported by USGS-CEGIS grant # 04121HS029, “Generalization and Data Modeling for New Generation Topographic Mapping” GIS Day University of Kansas 20 November 2013