These lines represent the view plane at the ridge and the associated building heights. There are 4 lines - or standard building heights - for this area: 45', 35', 25', and 10'. The original data for these lines can be found on pg. 2601 of plat bk 1 or reception #328113 for the San Miguel County Clerk recorders office. The original map and data was prepared by a surveyor by the name of Kari Distefano.