I took a small-farming course at WSU a few years ago and learned about this tool you can use to determine if the property has an established wetland. It's very handy and might help some newer hunters find wetlands, which is a great first start to identifying habitat and procuring access.
http://www.fws.gov/wetlands/data/mapper.HTMLClick the link on the bottom of the page. Once loaded, select 'Wetlands' on the layers list on the right hand side. It will highlight wetlands, identify the type of wetland, and a few other awesome things. Combine this with GoHunt and you could avoid posting those 'WHERE SHOULD I START' threads! Good luck!