Eastdale #2 Reservoir Report
Nearby: Eastdale #1 Sanchez Stabilizing
Last Updated: December 7, 2025
Eastdale #2 is a privately owned earth dam located in Costilla, Colorado, along the Costilla Creek-TR.
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Summary
Built in 1909 for irrigation purposes, the dam stands at 32 feet high and spans 3913 feet in length, with a storage capacity of 5540 acre-feet. The dam has a low hazard potential and was assessed to be in fair condition as of May 2017, with a high risk rating of 2.
Despite its age, Eastdale #2 continues to play a crucial role in water resource management in the region, providing irrigation water for agriculture. The dam is regulated and permitted by the Colorado Division of Water Resources, ensuring its safe operation and maintenance. With a maximum discharge capacity of 5700 cubic feet per second, the dam serves as a vital infrastructure for water supply and flood control in the area.
As climate change impacts water resources and weather patterns, the maintenance and monitoring of dams like Eastdale #2 become increasingly important. With its strategic location and significant storage capacity, Eastdale #2 stands as a testament to the enduring importance of water infrastructure in adapting to a changing climate and ensuring sustainable water management for future generations.
Year Completed |
1909 |
Dam Length |
3913 |
Dam Height |
32 |
River Or Stream |
COSTILLA CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
357 |
Hydraulic Height |
32 |
Drainage Area |
15 |
Nid Storage |
5540 |
Structural Height |
32 |
Hazard Potential |
Low |
Nid Height |
32 |
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.
Eastdale #2
Rio Grande River Segment C