Geograph OH app for iPhone and iPad

The ultimate app for Geography/Geology amateurs and professionals."
- Mel Martin, TUAW.com

Do you know which state assembly district you are in? Which school district? Where is the closest railroad? Is there a mine nearby? What kind of rock are you sitting on? Using the iPhones GPS, this app will answer these questions and many more.

Geograph OH is the edition of the popular GIS (geographic information system) covering the state of Ohio. It is a self-contained application (no Internet or cellular access required) that contains a vast amount of information about the geography and geology of the Buckeye State. You can combine various data layers, zoom in and out, and get a lot of details about the physical and human geography of Ohio.

While this is a professional-grade tool, it can easily be used by anyone curious about their environment.

This release contains 25 layers, which can be combined in any desired way:

- states outlines
- the complete geological map from USGS
- surficial materials
- terrain elevation
- bathymetry for lake Erie
- zip codes
- over 2,800 named features (summits, tunnels, cliffs, bridges, etc...) with link to USGS information page
- glacial limits
- U.S. congressional districts with link to representatives web sites
- over 1,400 mineral resources with link to USGS web site
- active mines
- public land ownership
- hydrologic units
- EPA ecological regions
- USGS quadrangles
- township and range
- urban areas
- counties with link to census data
- hydrology
- roads and major streets
- railroad tracks
- cities and towns with link to census data
- state plane zones
- UTM zones
- main aquifers with link to EPA web site

A number of additional layers can be downloaded from the application, including:

- state House districts with link to representatives web sites
- state Senate districts with link to senators web sites
- unified school districts
- boundaries of cities and villages with link to census data
- towns
- landmark areas (parks, campgrounds, airports, etc...)
- landmark points (schools, hospitals, fire stations, etc...)
- wildlife areas
- state parks
- state forests
- state natural areas
- major trails, current and planned
- important bird areas with link to Audubon Society web pages
- airports with link to FAA data pages

Each layer contains additional information about each feature. For instance, the geology layer has a description of the units name, age range, rock type, and description. Each mine has a name, a commodity, a facility type, and a company name. See our web site for more information about each layer.