ESRI is about improving our world and the use of our resources through better information management. Get maps for rivers, waterfalls, etc.- good resource.
The EPA has a nice section enabling you to map rivers with zoom capabilities. Though not as detailed, like the USGS Geospatial Data site, files are quite large.
For maps of the Quetico and BWCAW
Great maps with zoom capabilities for topography. You will want to have a broadband connection for these as the files are too large for a dial-up connection
Maps
Maps of Wilderness Areas, Wild and Scenic Rivers, National Natural Landmarks and UN Biosphere Reserves
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