ROCK RIVER: Latitude = 41.482530, Longitude = -90.616250, Zoom=14
Right Clicking anywhere on the map displays latitude, longitude, and address at that location.
NOTE: When switching from Upstream to Downstream, or vice versa, the 1/10th mile points must be showing.
Mile 0.0 of the Rock River is on the left descending bank at mile 479 of the Upper Mississippi
River. This viewer covers the first 100 miles. Mile points on this map are believed to be within 1/10th mile.