Nottingham Reservoir Report

Last Updated: December 4, 2025

Nottingham, located in Eagle County, Colorado, is a significant irrigation dam built in 1936 on Nottingham Gulch.


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Summary

The dam stands at a height of 36 feet with a hydraulic height of 21 feet and a length of 400 feet, providing a storage capacity of 27 acre-feet for irrigation purposes. With a drainage area of 3 square miles and a maximum discharge of 505 cubic feet per second, Nottingham Dam plays a crucial role in water resource management in the region.

Maintained by the local government and regulated by the Colorado Division of Water Resources, Nottingham Dam has a spillway width of 32 feet and is classified as having a significant hazard potential. Despite being in fair condition as of the last assessment in September 2020, the dam requires regular inspections every two years to ensure its structural integrity and safety. The dam has undergone modifications in 2004 to enhance its hydraulic and structural components, further highlighting the importance of ongoing maintenance and risk management measures for this essential water infrastructure.

Nottingham Dam, nestled in the picturesque city of Avon, serves as a vital component of the local water supply system, demonstrating the intersection of water resource management and climate resilience in the region. With its historical significance and continued relevance in supporting agricultural activities, Nottingham Dam stands as a testament to the enduring importance of sustainable water infrastructure for communities in Colorado.

Years Modified

2004 - Hydraulic, 2004 - Structural

Year Completed

1936

Dam Length

400

Dam Height

36

River Or Stream

NOTTINGHAM GULCH

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

21

Drainage Area

3

Nid Storage

27

Structural Height

36

Outlet Gates

Slide (sluice gate) - 1

Hazard Potential

Significant

Foundations

Rock, Soil

Nid Height

36
       
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.