I need help symbolizing small scale wetlands layers
Help! I'm trying to create a larger poster size map of Michigan. I need to show wetlands in a similar way as the USGS topo's, and the best layer available seems to be the NWI. The problem is that it is super detailed. I don't need to know individual attributes, just weather it is a wetland or not. My problem is that the NWI is so detailed that when i zoom out to the scale required to show all of Michigan it is too detailed. I need a courser or more generalized data layer. Does anything like this exist? What I need is very similar to the online NFWS map viewers generalized layers when they are showing it at a very small scale.
Mapping Center Answer:
Try using instead the National Land Cover Dataset (NLCD) -- this includes a Wetlands category that is further subdivided into Woody and Emergent Herbaceous Wetlands. Here is the link to the online data: http://www.epa.gov/mrlc/nlcd-2001.html.
Here is a link to the classification system they use for the land use/land cover categories: http://www.epa.gov/mrlc/classification.html
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