Lilylands Reservoir Report

Last Updated: December 9, 2025

Lilylands, also known as Becker Lake, is a privately owned water resource located in San Miguel, Colorado.


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Summary

This dam, completed in 1959, serves multiple purposes including irrigation, fire protection, stock, small fish ponds, and water supply. With a dam height of 50 feet and a storage capacity of 653 acre-feet, Lilylands plays a crucial role in managing water resources in the region.

The dam is regulated by the Colorado Department of Water Resources and undergoes regular inspections to ensure its structural integrity. Despite being classified as having a low hazard potential, Lilylands is rated as having a high risk assessment level. Its condition is deemed fair, and emergency preparedness measures are being continuously evaluated to meet guidelines and ensure the safety of the surrounding community.

Water enthusiasts and climate advocates can appreciate the significance of Lilylands in maintaining water supply and supporting various agricultural and environmental functions in the area. The dam's location on West Naturita Creek-TR, its earth-based structure with stone core, and its fair condition make it a valuable asset for water management in Colorado. By staying informed about the regulatory oversight and risk assessment of Lilylands, stakeholders can contribute to the sustainable utilization of this vital water resource.

Year Completed

1959

Dam Length

380

Dam Height

50

River Or Stream

WEST NATURITA CREEK-TR

Primary Dam Type

Earth

Surface Area

37

Hydraulic Height

50

Drainage Area

1

Nid Storage

653

Structural Height

54

Outlet Gates

Slide (sluice gate), Uncontrolled

Hazard Potential

Low

Foundations

Rock, Soil

Nid Height

54
       
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.