Topos Central|書籍線上App不用買

Topos Central is an app that provides access to download and view high resolution USGS topographic maps for the central region of the United States.

NOTE: There is a button in the app to quickly email in case of issues. If you have any issues at all, we'll do whatever we can to make it right. We can't respond to reviews, please give us a chance to fix the issue first.

REGARDING MAP DATES:

You will often see a date on a downloaded map that seems pretty old. This is the date of last physical survey. This could be a long time ago. Often maps will be compared to aerial photography to verify buildings but not always. I can't do anything about this and besides, mountains don't move that quick.

See the "Currentness Year and Version Year" section here: http://egsc.usgs.gov/maplists/howtoselectmaps.html

This app includes the following states:

Alabama

Arkansas

Illinois

Iowa

Kansas

Louisiana

Minnesota

Mississippi

Missouri

Nebraska

North Dakota

Oklahoma

South Dakota

Texas

Wisconsin

There are over 7,500 maps in total. Except North Dakota, the maps available are over 99%. Most of North Dakota is missing.

Some notes on the app:

- This are no frills, just simple, huge topo maps.

- It doesn't show you where you are on the map.

- You can't stitch maps together.

- After a map is downloaded there is short period where the map is broken down so you can zoom and pan, it only happens once for each map downloaded.

Please contact us at support@pignology.net so we can resolve any issues quickly.

Have a feature request? Send those over to support@pignology too. I'm always happy to fix problems and make apps better.

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