Rattlesnake Ranch No.2 (Lower) Reservoir Report
Nearby: Bankhead (Lower) Provancha
Last Updated: December 5, 2025
Rattlesnake Ranch No.2 (Lower) is a privately owned irrigation dam located in Moab, Utah, along the Coyote Wash river.
°F
°F
mph
Wind
%
Humidity
Summary
Built in 1972, this earth dam stands at a hydraulic height of 37 feet and a structural height of 43 feet, with a length of 780 feet. It has a storage capacity of 420 acre-feet, with a normal storage level of 377 acre-feet, serving the primary purpose of irrigation for the surrounding area.
Managed by the Utah Division of Water Rights, this dam is regulated, inspected, and enforced by the state authorities to ensure its safety and compliance. With a significant hazard potential, it undergoes inspections every two years to assess its condition and any necessary maintenance or improvements. The last inspection was conducted in October 2020, with the condition assessment marked as "Not Rated."
For water resource and climate enthusiasts, Rattlesnake Ranch No.2 (Lower) provides a fascinating example of how private dams play a crucial role in supporting agricultural activities in arid regions like Utah. Its location, design, and operational details offer insights into the intricate network of water management infrastructure that sustains the local ecosystem and economy. As efforts to address climate change intensify, understanding and monitoring such dams become increasingly vital to ensure water security and resilience in the face of evolving environmental challenges.
Year Completed |
1972 |
Dam Length |
780 |
River Or Stream |
COYOTE WASH |
Primary Dam Type |
Earth |
Hydraulic Height |
37 |
Drainage Area |
3.5 |
Nid Storage |
420 |
Structural Height |
43 |
Hazard Potential |
Significant |
Nid Height |
43 |
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.
Pack Creek Group Picnic Site
Mount Peale Free Camping
Windwhistle Campground
Wind Whistle Campground
Windwhistle
Yellow Circle Road Dispersed Camping
Rattlesnake Ranch No.2 (Lower)