Tree pruning and removal
Tree Pruning

Please call EWEB at 541-685-7000 (follow the prompts to "vegetation management") if you discover a tree growing into electrical lines, or you need to prune or remove a tree that is in or near electrical lines. Never attempt to prune or remove a tree that has electrical lines running through it. In addition, call EWEB prior to hiring private arborists, tree services or landscapers if your trees are near electrical lines. In many cases, contractors are not legally allowed to work on line adjacent trees without clearance from EWEB.

The Eugene Water & Electric Board has an extensive maintenance program for trees along power line right-of-ways.

Why we prune

EWEB routinely inspects the electrical system to ensure the delivery of safe, reliable energy. EWEB must comply with Public Utilities Commission (PUC) and National Electrical Safety Code (NESC) rules governing clearance around electrical lines and facilities. To facilitate compliance, EWEB has an extensive vegetation management program that routinely inspects and prunes trees along electrical line right-of-ways. It is our goal to manage the hazards posed by vegetation near electrical lines that can lead to unsafe conditions, and interruptions to electrical service.

Unsafe conditions and service interruptions occur when trees grow into electrical lines. Water, sap and chemicals in trees are conductors of electricity, and when a tree has grown into the lines, the potential exists for electricity to travel to the ground. In addition, trees in contact with electrical lines are fire hazards, even live trees can easily catch fire when in contact with lines.

EWEB also maintains tree clearance from electrical lines to protect the public. Please visit the trees and safety page for tips concerning trees under or near electrical lines.

How we prune

Trees are individually evaluated by EWEB Utility Foresters and Arborists. EWEB prunes tree growth clear of electrical lines using the directional pruning method. Directional pruning is the only type of pruning recommended by The International Society of Arboriculture (ISA) and the American National Standards Institute (ANSI) for vegetation clearance around electrical lines.

Tree Pruning Examples

Crown reduction is the pruning back of portions of a tree's upper crown.

Example of V-pruning

Side pruning is the reduction or removal of side branches.

Example of side pruning

Side pruning of coniferous trees may require removal of limbs to the trunk

Example of side pruning of
        coniferous trees

Coniferous trees planted beneath the lines must be reduced to allow clearance for lines above.

Example of topping trees

Many tree species are incompatible with overhead electrical lines. EWEB is often available for assistance in the removal and replacement of these trees. Properly selected and planted replacement trees are often the best long-term solution for reducing tree-line conflicts, or repeated pruning. See tree selection for a list of line friendly tree species.