Effective maintenance of a distribution line right of way necessitates a recognition of the problem plant species and an expectation as to the rate of occurrence and growth. TransAlta's Distribution Line Clearance group was provided with the rate of occurrence of problem species and implied tree growth rates by Division in the 1985 report on the Distribution Line Clearance Program by Environmental Consultants, Inc.

Poplar regrowth following mowing is compared to natural seedling growth rates...