Skyscraper Reservoir Report

Last Updated: December 4, 2025

Skyscraper, located in Boulder, Colorado, is a masonry dam completed in 1940 for the primary purpose of water supply.


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Summary

With a dam height of 22 feet and a hydraulic height of 20 feet, it stands as a crucial structure in the region's water management system. The dam has a normal storage capacity of 146 acre-feet and a maximum storage of 185 acre-feet, serving as a vital resource for the area's water needs.

Managed by the local government and regulated by the state's Department of Water Resources, Skyscraper has been assessed to be in fair condition with a low hazard potential. The dam overlooks the Jasper Creek-TR river/stream and plays a key role in ensuring water availability for the community. Despite its age, Skyscraper continues to be inspected regularly, with the last assessment conducted in August 2020, ensuring its reliability and safety in the face of potential climate impacts.

As a critical infrastructure in the region, Skyscraper is a testament to the importance of water resource management in the face of changing climate patterns. With a moderate risk assessment rating, efforts to maintain and monitor the dam's condition are essential to safeguarding water security for the surrounding area. Skyscraper serves as a symbol of resilience in the face of environmental challenges, highlighting the need for sustainable water management practices in the midst of a shifting climate landscape.

Year Completed

1940

Dam Length

125

Dam Height

22

River Or Stream

JASPER CREEK-TR

Primary Dam Type

Masonry

Surface Area

12

Hydraulic Height

20

Nid Storage

185

Structural Height

24

Hazard Potential

Low

Nid Height

24
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.