The Technical, Construction and Operations Branch (TCOB) plans, designs, constructs, repairs, and maintains water facilities to directly serve the water needs of the Navajo ranchers and farmers across the Navajo Nation. The projects include water wells, storage tanks, waterline extensions, earthen dams, windmills, solar systems and repair/maintain all such facilities.
The Branch also has the responsibility to repair and maintain domestic and irrigation water systems under its jurisdiction. In addition, TCOB repairs and maintains all equipment used for drilling, construction, repair and maintenance of all above described purposes.
- OVER 900 LIVESTOCK WATER FACILTIES
- SIX MAJOR IRRIGATION SYSTEMS
- FIVE DOMESTIC FACILITIES
- OVER 1300 NATURAL SPRINGS/DUGWELLS
- OVER 1500 EARTHEN STOCK PONDS
TCOB hands-on approach to provide water for the Navajo livestock and crops maintain cultural practices and promote self-sufficiency for generations.
Water Development for Navajo Ranchers and Farmers 
Water infrastructure development through well drilling, construction of water storage tanks, waterline extensions, earthen dams, repair and maintenance of livestock, domestic and irrigation systems under its jurisdiction to ensure adequate water for livestock and crops.
Protecting the Water Rights of the Navajo Nation
The Navajo TCOB serves all livestock and six major irrigation systems located across the Navajo Nation. This helps to promote our water rights negotiations and on-going litigation.
Practicing Division of Natural Resources Core Values
- PROACTIVE
- INNOVATIVE
- FAIR & HONEST
- RESULT ORIENTED
- CUSTOMER ORIENTED
- CONTINUOUS IMPROVEMENT
Working Together (Fostering Partnerships) 
The TCOB continues to work collaboratively with local communities, chapter, individuals, State, and Federal Government agencies to provide direct services to the Navajo people. TCOB ensures adequate water development for present and future water needs of the Navajo Nation through water conservation efforts to maximize the use of water resources. “Water is Life”
Water Development Projects
- Water Wells
- Water Storage Tanks
- Windmill Installations
- Waterline Extensions
- Earthen Dams
- Repair and maintenance of livestock, domestic, and irrigation water facilities and heavy equipment
Safe Drinking Water Hauling Feasibility Study Pilot Project
To provide safe drinking water to our Navajo People that currently do not have access to a regulated water source.
- Water Hauling via 4,000 gallon water trucks
- Provide educational information on regulated vs. unregulated water
- Provide safe drinking water containers
- Identify resources for recipients to apply for assistance
- Identify unmet needs
- Create model for a water hauling programs at local level, or other levels in their communities.
Contact (928) 729-4032 for more information.