Rock County elevation and terrain tools
Southern Wisconsin • County seat: Janesville
Rock County lies on the Illinois border, crossed by the Rock River through Janesville and Beloit. Flat outwash plains and rolling glacial land make up most of the county.
Open the mapLidar coverage
Lidar projects that cover Janesville, from the USGS 3DEP work-unit index. Other parts of the county may come from other projects; the coverage guide explains how to check any spot.
| Project | Year | Cell size | Point density |
|---|---|---|---|
| WI_8County_Rock_2020used by the elevation model | 2.0 ft per pixel | — |
Property boundaries
The Property tool queries Wisconsin Statewide Parcel Map Initiative (local governments) for parcels in Rock County and uses a returned boundary for supported terrain analyses. The statewide aggregation has local gaps and may differ from current records. If no usable parcel is found, draw or upload an area instead. Parcel maps are not legal surveys; most file downloads cover the rectangle around a selection.
Tools for Rock County
A PDF terrain report for a parcel: hillshade, contours, slope and elevation statistics.
How the tool worksContour lines at the interval you choose, on the map and as vector files.
How the tool worksHours of direct sun on any day of the year, with shadows cast by the terrain.
How the tool works