Hamlot Lagoon Dam Reservoir Report

Last Updated: December 13, 2025

Hamlot Lagoon Dam, located in Sumner, Nebraska, was completed in 2013 and is owned privately.


°F

°F

mph

Wind

%

Humidity

Summary

This earth dam stands at a height of 14 feet and spans a length of 1800 feet, providing a storage capacity of 54.7 acre-feet with a normal storage level of 41.1 acre-feet. The dam, situated on the TR-Wood River, serves a primary purpose deemed as "Other" and is regulated by the Nebraska Department of Natural Resources (DNR).

Despite its low hazard potential and satisfactory condition assessment, Hamlot Lagoon Dam is subject to regular inspections every five years, with the last assessment conducted in December 2019. The dam has no associated structures and does not feature a spillway. With its location in Dawson County, Nebraska, this dam plays a crucial role in water resource management within the region. Enthusiasts of water resources and climate will find Hamlot Lagoon Dam to be an intriguing site to study and monitor for its impact on the local ecosystem and surrounding communities.

Year Completed

2013

Dam Length

1800

Dam Height

14

River Or Stream

TR-WOOD RIVER

Primary Dam Type

Earth

Surface Area

4.4

Hydraulic Height

14

Nid Storage

54.7

Structural Height

14

Hazard Potential

Low

Foundations

Soil

Nid Height

14
       
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.