Geograph MN

What if you could hold Minnesota in the palm of your hand?

Geograph MN is the Minnesota version of the first GIS (geographical information system) for the iPhone.

Terrain, hydrology, roads and airports of southeastern Minnesota
Unlike Google Maps, Geograph MN is completely self-contained, which means that it is always available, even without any cellular or wireless coverage. It can be used in the field, in the middle of nowhere. It can of course take full advantage of the iPhone's built-in GPS receiver (this is more limited on the iPod).
Geology and USGS quadrangles of northeastern Minnesota
Geograph MN contains a selection of geographical information in its internal database. It can display this information in 27 different layers. Each layer can be individually shown or hidden, moved up or down, and made more or less transparent. This allows an almost infinite number of possible displays.
Surface geology, glacial limit, urban areas and counties of the Twin Cities area

Each feature of most layers has additional information which can be displayed by tapping the feature. This brings up a list of all the data in all the displayed layers at that point.

The user can then select the desired layer and get all the available information. For instance, tapping an area of the Congressional District layer brings up a screen similar to the following:

With Geograph MN, you can finally access data that is relevant to you without needing access to a computer or a network.

Geograph MN can also generate high-resolution maps that you can download to your computer. The following shows the geology of the state with the counties superimposed (difficult to believe it was actually generated on an iPhone, isn't it?):