This relationship is usually expressed as a ratio. The following list by no means covers every type of map or chart available but provides information to help locate and order the printed ones most widely used. Harbor charts are also available for most ports. These consist of a series of 34 to 35 large-scale charts that are excellent for both navigating and locating fishing areas. These maps provide accurate land contour lines and use symbols to identify manmade objects such as roads, buildings, and transmission lines.
Different colors portray wooded areas, cleared land, and bodies of water.
Topographic maps can help anglers find access to streams and lakes and provide a good representation of shoreline features. They do not, however, show water depths. Sheets covering the Lake Erie shoreline may show some depth contours. Topographic maps are not intended for navigation over water. Each quadrangle is identified by a name, usually of a prominent town or feature appearing on the map.