Pottawattamie County Highpoint Identity
Date: December 2014
Author: Adam Helman
Digitized elevation data provides three new 1,360+ foot contours (10 foot interval),
denoted here as "area 13" through "area 15". The 12 original 1,360+ foot contours
of Bob Schwab's original report
remain designated "area 1" through "area 12".
His second report describes
the three new contours.