Data Collection
The data used for this project is acquired from the City of Rochester, Public Works Department. Original shapefile datasets include: city limits, land use and zoning boundaries, geomorphology, hydrology, utilities, and drinking water management areas (DWSMA). A topography contour map, elevation points, and transportation layer come in AutoCAD drawing (.dwg) format. The city also provides a 2005, aerial photograph of Rochester in Mr.SID image format. SSURGO soil profiles are obtained from the Natural Resources Conservation Service (NRCS).
A land use layer based on percent impervious surface is digitized on-screen using the Rochester imagery, current land use, zoning, and survey descriptions. Digital elevation models (DEM’s) are developed using the elevation point files.