Hollandsworth Reservoir Report
Nearby: O'Lot O'Farmin' Kneeded
Last Updated: December 5, 2025
Hollandsworth is a state-owned dam located in Liberty County, Montana, near the city of Loma.
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Summary
It was completed in 1946 and primarily serves the purposes of fire protection, stock, and small fish pond maintenance. The dam is classified as an earth-type structure with a height of 30 feet and a length of 200 feet, providing a storage capacity of 129 acre-feet.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Hollandsworth is regulated, permitted, inspected, and enforced by the state. Despite being rated as having a low hazard potential, the dam's condition is currently not rated. It is situated on the TR-Dead Indian Coulee river, and its location is at S16 28N 3E, with a latitude of 48.1854 and longitude of -111.3573.
For water resource and climate enthusiasts, Hollandsworth represents a vital infrastructure for water management and conservation in the region. With its multiple purposes and state ownership, the dam plays a crucial role in providing essential services while maintaining a low-risk profile. As a significant asset in the local water resource network, Hollandsworth contributes to the sustainable management of water for various uses in the area.
Year Completed |
1946 |
Dam Length |
200 |
Dam Height |
30 |
River Or Stream |
TR-DEAD INDIAN COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
129 |
Hazard Potential |
Low |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Marias River Near Chester Mt
|
249cfs |
Teton River Near Dutton Mt
|
83cfs |
Marias River Near Shelby Mt
|
305cfs |
Lake Creek Near Power Mt
|
30cfs |
Marias River Near Loma Mt
|
335cfs |
Missouri River At Fort Benton Mt
|
4720cfs |
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.
Hollandsworth