Grand Valley Diversion Reservoir Report
Last Updated: December 13, 2025
The Grand Valley Diversion, located in Mesa County, Colorado, plays a crucial role in managing water resources from the Colorado River.
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Summary
This Federal-owned structure, with a height of 14 feet, is regulated and inspected by the Colorado Department of Water Resources, ensuring its safety and compliance with state regulations. With a storage capacity of 110 acre-feet, the Grand Valley Diversion serves as a vital component of the water infrastructure in the region, supporting agricultural and environmental needs.
While the Grand Valley Diversion is categorized as having a low hazard potential, it is considered to have a high risk due to its condition assessment being labeled as "Not Rated." This highlights the importance of regular inspections and maintenance to mitigate any potential risks associated with the structure. Emergency action plans are essential for the safety and security of the surrounding areas, and it is crucial for the structure to meet guidelines and have updated contact information for emergency situations. Despite these risks, the Grand Valley Diversion remains a key asset in water management for the region, showcasing the delicate balance between resource utilization and environmental stewardship in the face of changing climatic conditions.
Dam Height |
14 |
River Or Stream |
COLORADO RIVER |
Hydraulic Height |
14 |
Nid Storage |
110 |
Structural Height |
14 |
Hazard Potential |
Low |
Nid Height |
14 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Grand Valley Diversion