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I'm looking for information I can visualize in Google Earth concerning rivers, such as rapids, put-in points, take-out points, campsites, etc. Any idea how I can look for this kind of information?

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I'd be interested to know this too. A related example on the outdoor pursuits front is which has a geodatabase of all climbing crags - I haven't heard of a similar resource for paddlers though. – Sideshow Bob Oct 28 '11 at 9:22
Any particular geographic area? – Chad Cooper Oct 28 '11 at 12:06
@ChadCooper I am particularly interested in information about the province of Quebec in Canada, but everywhere is good. – Shawn Oct 31 '11 at 3:17

If you are looking for USA data, than the NHD dataset has rapids information (note, not all the states seem to be collecting this feature type).

NHD data

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In addition to ftp, there's also an NHD Viewer, though I don't see any rapids in it. – Kirk Kuykendall Oct 28 '11 at 16:01

In Canada you find this type of data in the CanVec datasets provided by the Natural Resources Canada Geogratis portal. There is a 1:50K (metres) nation-wide coverage and it is the same data used for the Canada 1:50K topographic maps.

There is also a new generation of topographic maps being produced also by NRCan. Coverage is still still limited but you can find if your area of interest is available here.

These maps/data include some of the features you are looking for but for more detailed information you might have to search the databases at provincial/state level.

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This is specialized stuff, so you're best off inquiring among paddlesport organizations. In the US, begin with the American Canoe Association, which has a link to "water trails" information. It also provides links to local clubs, which traditionally will have the best and most up to date information about rivers near them--don't expect there to be a detailed national database that is current or of high quality. Some clubs may have databases of geospatial information by now, but of course the availability varies from club to club. If these obvious sources don't pan out, the Philadelphia Canoe Club maintains a useful set of links to Web sites worthy of further research.

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