Hydrology line work in Rock County, Wisconsin. The methodology used to digitize the features used numerous datasets as reference and verification of active hydrography within Rock County. The datasets used were: USGS 7.5 Topo Quad Digital Raster Grids, Aerial Photography, Pictometry Oblique and Top-down Orthophotography, Digital Terrain Models, 2 Foot Contour Topography. This data layer is used as the base of the 300' Shoreland Zoning buffer. Only those features that are navigable are used in this analysis.

Hydrology line work in Rock County, Wisconsin. The methodology used to digitize the features used numerous datasets as reference and verification of active hydrography within Rock County. The datasets used were: USGS 7.5 Topo Quad Digital Raster Grids, Aerial Photography, Pictometry Oblique and Top-down Orthophotography, Digital Terrain Models, 2 Foot Contour Topography. This data layer is used as the base of the 300' Shoreland Zoning buffer. Only those features that are navigable are used in this analysis.