Map Beauty Creek
I made this from the Indiana Biodiversity Initiative CD (Walt and I have copies)
http://faculty.pnc.edu/pwilkin/AEslides/beauty.bmp
The purple 1 km squares are areas of greatest biodiversity
But it lacks detail. 
 
The best result (that I know) anyone can do (thank my wife for finding it):
at PCPLS: http://www.pcpls.lib.in.us/
click on site map: http://www.pcpls.lib.in.us/Sitemap.htm
scroll down to maps of Porter co:
http://www.pcpls.lib.in.us/Community%20Resources/mapsofporterco.htm
(note there are B&W photos of the county)
then the first entry is Topozone
http://www.topozone.com/default.asp?404;http://www.topozone.com/findresults.asp
Enter Valparaiso Indiana and navigate and zoom and select large map
to where you want, this is using PrintScreen
http://faculty.pnc.edu/pwilkin/AEslides/beauty2.bmp
 
If you do it for yourself it looks much better and you can go up and down the creek!
and I think the wetlands are shown
Kevin B may have made the Valpo Lakes map using topozone
Peter