Revision History for Scientific Investigations Report 2012-5070 By Silvia Terziotti, Gerard McMahon, and Amanda H. Bell Representation of Regional Urban Development Conditions Using a Watershed-Based Gradient Study Design ----------------------------------------------------- First posted May 24, 2012 ----------------------------------------------------- Revised and reposted August 29, 2012 Pages 47-50 and 87 of SIR 2012-5070 were replaced in the pdf because figures 21A-G and figure 40E had Michigan and Wisconsin labeled incorrectly.