Geograph CO

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

Geograph CO is the Colorado version of the first GIS (geographical information system) for the iPhone.

The latest release is 1.2, it contains a veritable plethora of geographic data about the Centennial state.

Geology of Colorado
Unlike Google Maps, Geograph CO 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).
Terrain, urban areas, roads and mineral resources near Aspen
Geograph CO contains a selection of geographical information in its internal database -- 31 by default. A number of additional layers are also available for download (15 as of this writing). 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.
Public lands layer

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 a data point in the Oil Well layer brings up a screen similar to the following:

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

Geograph CO can also generate high-resolution maps that you can download to your computer. The following is a combination of the terrain, roads, county lines and fire history in the region west of Trinidad (difficult to believe it was actually generated on an iPhone, isn't it?):