GIS Map Library
Welcome to the Lewis County Map Library. Lewis County GIS has constructed and maintains hundreds of map layers of land features such as roads, rivers and drainage basins, hydric soil, hydrology, topographic relief, urban growth areas, and city and district boundaries.
Select Web Map below or a topic on the right to begin →
GIS Data:Download our commonly requested GIS data layers in ESRI shapefile format:
GIS software is needed to use the data. The files are updated weekly, either on Friday or the following Monday, to capture any changes made throughout the week.