Lisbon Dam Reservoir Report
Nearby: Soldiers Home Dam Dead Colt Creek Dam
Last Updated: December 13, 2025
Lisbon Dam, located on the Sheyenne River in Lisbon, North Dakota, was completed in 1890 and serves as a vital water supply structure for the local government.
°F
°F
mph
Wind
%
Humidity
Summary
This concrete gravity dam stands at a height of 18.6 feet and has a length of 130 feet, providing a storage capacity of 443 acre-feet. With a primary purpose of water supply, the dam has undergone several structural modifications over the years to ensure its continued functionality, with the most recent updates occurring in 1998.
Managed by the North Dakota State Water Commission (NDSWC), Lisbon Dam is regulated, permitted, inspected, and enforced by the state, ensuring its compliance with safety standards and regulations. The dam features an uncontrolled spillway with a width of 100 feet and two slide (sluice gate) outlet gates. Despite being classified as having a low hazard potential, the dam is considered to have a moderate risk level, indicating the importance of ongoing risk management measures to mitigate any potential threats to its integrity. Overall, Lisbon Dam remains a critical infrastructure for water resource management in the region, playing a key role in supplying water to the surrounding community while also addressing climate-related challenges.
Years Modified |
1954 - Structural, 1966 - Structural, 1986 - Structural, 1998 - Structural |
Year Completed |
1890 |
Dam Length |
130 |
Dam Height |
18.6 |
River Or Stream |
SHEYENNE RIVER |
Primary Dam Type |
Concrete |
Surface Area |
55.7 |
Drainage Area |
8190 |
Nid Storage |
443 |
Outlet Gates |
Slide (sluice gate) - 2 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Sheyenne River At Lisbon
|
222cfs |
Maple River Nr Enderlin
|
25cfs |
Bear Creek Nr Oakes
|
5cfs |
James River At Lamoure
|
217cfs |
Wild Rice River Nr Rutland
|
21cfs |
Sheyenne River Near Kindred
|
337cfs |
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.
Lisbon Dam