Vegetation growth along our power lines, access roads and terminal stations is a safety concern to both Hydro crews and the public. Trees are excellent electricity conductors and can cause safety risks like fire and outages when they come into contact or grow too close to power lines.

Hydro’s Vegetation Management Plan helps to control vegetation in order to maintain the safety and reliability of our lines including manual brush clearing, tree trimming and the selective use of herbicides.

This year’s program begins in May and is expected to run until October, pending weather and vegetation conditions.

When will the program start in my region?

• Eastern Newfoundland: August 20, 2024
• Central Newfoundland: July 3, 2024
• Northern Peninsula: June 11, 2024
• Western Newfoundland: June 24, 2024
• Labrador: July 1, 2024
• Dykes and Dams Program: May 27, 2024

Note: All start dates are approximate.

What products will be used?

All the products we use are federally registered and highly regulated. Products to be used this year include:

• Aspect Herbicide (PCP# 31641)
• Banvel VM (PCP# 29249)
• Clearview (PCP# 29752)
• Dupont Escort (PCP# 23005)
• Garlon RTU (PCP#29334)
• Garlon XRT (PCP# 28945)
• Gateway Adjuvent (PCP# 31470)
• Hasten NT Ultra (PCP# 31760)
• Navius Flex (PCP# 30922)
• Vanquish (PCP# 26980)

What areas will be affected?

A complete list of areas, program status, and map is included below. Signage will be posted in each area following treatment. If you are aware of any wells near the treatment areas listed below, please call us at 1-888-737-1296 or email hydro@nlh.nl.ca.

Eastern

Petit Forte Distribution
Herbicides: Clearview, Garlon XRT, Gateway or Hasten NT Ultra
Status: Not Started
⇒ Click to view map

Soldiers Pond Site Access Road
Herbicides: Garlon XRT and Surfactant
Status: Not Started
⇒ Click to view map

Central

Chipper Road (GFW) to Bay d’Espoir Highway (L3501/3502)
Herbicides: Garlon XRT, Clearview and Surfactant
Status: In progress
⇒ Click to view map

Mint Brook Access Road
Herbicides: Garlon XRT and Surfactant
Status: Not Started
⇒ Click to view map

Stony Brook to Cobbs Pond (TL210)
Herbicides: Escort, Banvel VM or Vanquish, Gateway or Hasten NT Ultra
Escort and Surfactant
Status: Complete
⇒ Click to view map

Stony Brook to Great Rattling Brook (TL204/TL 231)
Herbicides: Escort, Banvel VM or Vanquish, Gateway or Hasten NT Ultra
Escort and Surfactant
Status: Not Started
⇒ Click to view map

Bottom Waters Distribution
Herbicides: Clearview, Garlon XRT, Gateway or Hasten NT Ultra
Status: Starting August 26
⇒ Click to view map

South Brook Distribution
Herbicides: Clearview, Garlon XRT, Gateway or Hasten NT Ultra
Status: Complete
⇒ Click to view map

Western

Birchy Lake to Taylors Brook Rd (Camp 172 Branch) L3501/3502
Herbicides: Banvel VM, Escort and Surfactant
Status: Complete
⇒ Click to view map

Southern Long Range Mountains/Eagle Mountain L3501/3502
Herbicides: Garlon XRT, Clearview and Surfactant
Status: Not Started
⇒ Click to view map

Birchy Lake Voyins Brook L3501/3502
Herbicides: Garlon XRT, Clearview and Surfactant
Status: In progress
⇒ Click to view map

Northern

Cormack to Gros Morne Park Boundary (TL 226, TL 239)
Herbicides: Garlon, Clearview and Surfactant
Status: Complete
⇒ Click to view map

Middle Brook/Shoal Cove (L3501/3502)
Herbicides: Garlon XRT, Clearview and Surfactant
Status: Not Started
⇒ Click to view map

Squid Cove (L3501/3502)
Herbicides: Garlon XRT, Clearview and Surfactant
Status: Not Started
⇒ Click to view map

Long Range Mountains North (L3501/3502)
Herbicides: Garlon XRT, Clearview and Surfactant
Status: Not Started
⇒ Click to view map

Sheffield Lake Access Road
Herbicides: Garlon XRT and Surfactant
Status: Not Started
⇒ Click to view map

Lynx Pond Access Road
Herbicides: Garlon XRT and Surfactant
Status: Not Started
⇒ Click to view map

Labrador

Churchill Falls to Twin Falls (230kv)
Herbicides: Aspect, Garlon XRT and Garlon RTU
Status: Not Started
⇒ Click to view map

Esker Road, Gabbro Control Structure to mile 61 (66kv)
Herbicides: Aspect, Garlon XRT and Garlon RTU
Status: Not Started
⇒ Click to view map

Structure 126L1 to Structure 155L1 (735kv)
Herbicides: Aspect, Garlon XRT, and Garlon RTU
Status: Not Started
⇒ Click to view map

Between Cache River and Wilson River (315kv)
Herbicides: Aspect, Garlon XRT and Garlon RTU
Status: Not Started
⇒ Click to view map

St Paul’s River Road (STRs 645-900) L3501/3502
Herbicides: Navius Flex and Surfactant
Status: Complete
⇒ Click to view map

Muskrat Falls Access Road
Herbicides: Garlon XRT, Clearview and Surfactant
Status: Not Started
⇒ Click to view map

Trans-Labrador Highway (STRs 86 to STR 248)
Herbicides: Garlon XRT, Clearview and Surfactant
Status: Not Started
⇒ Click to view map

Dykes and Dams Program

Herbicides: Garlon RTU
Status: Started May 27, 2024
⇒Click to view map

Churchill Falls Biting Fly Program

This year’s program for the biological control of mosquitoes and black flies in Churchill Falls, NL is scheduled take place from May 13 to September 13.

⇒Click to view map

Pestalto Environmental Health Services Inc will carry out the work with the authorization of the Government of Newfoundland and Labrador (permit no. 20-106) and under contract with Newfoundland and Labrador Hydro. Pestalto will use two larvicide formulations which contain B.t. H-14 and are produced by Valent Biosciences. VectoBac1200L PCP#21062 (Liquid) and VectoBac 200G PCP# 18158 (Granular) will be used to control both mosquito and black fly larvae by air and ground applications. Additional formulation Altosid Granular PCP# 22676 may be considered and applied during the 2024 program. For the immediate control of adult mosquitoes and black flies Prelude 240 PCP#26509 may also be considered and applied to foliage on the outskirts of town as a barrier spray.

For more information on the program, please contact Morgan Tyler, Pestalto Environmental Health Services Inc. at (519) 831-4750 or the Pesticides Control Department at 1-800-563-6181.

Looking for more information?

For more information on Hydro’s Vegetation Management Program, read our Good to Know Post or call us at 1-888-737-1296. You can also contact the Department of Environment and Climate Change at (709) 729-2556.