where can i find an expert to advise me on creek bank protection using rip rap

Where do you live?

http://www.quikrete.com/diy/project_23.html 

http://www.stormwatercenter.net/Assorted%20Fact%20Sheets/Restoration/bank_protection.htm

http://www.extension.umn.edu/distribution/naturalresources/components/DD6946g.html

http://www.pennyleetrucking.com/gravel_prices.htm

http://www.newp.com/erosion.html

http://www.maccaferri-usa.com/gabionma.shtml

http://www.pilebuck.com/paperbooks/breakwaters.htm

http://www.progressiveconcrete.com/grasscrete.htm

http://www.sustland.umn.edu/related/water4.html