A topographic map provides a way to observe the shape of the land. It allows people to see variations in the land, including woodlands, lakes, natural landscape features, buildings, mines, roads and wells.

Variations in elevations are shown by brown contour lines. Water is blue and woodlands are green, while roads and human-made features appear black and red.

Contour lines on the map connect points of equal elevation along the land surface. The darker contour lines have the elevation (in feet above sea level) recorded on them. By looking at the arrangement and spacing of contour lines, it is possible to get a view of Butler County's watersheds.

Maps are an essential part of ecosystem management, geological research and surface and ground water investigations. They are essential for flood control, soil conservation and reforestation projects in watersheds.

Other basic uses include planning for airports, highways, livestock confinement, wastewater treatment plants, lakes, pipelines, wetlands and almost any type of construction project necessary for modern life.

The sustainability of Butler County's natural resources depends on the availability and use of good topographic maps.

Also, accurate maps show clearings, relief features, watercourses, wooded areas and other features of great value to bicyclists, hikers, hunters and other outdoor enthusiasts.

The Butler County Conservation District sells topographic maps for the public's use. For more information, call 724-284-5270.

The Butler County Conservation District is now sponsoring the publication of a county-wide plat book. The county Map Office has provided the maps necessary for a fourth publication. The new book should be completed sometime this year.