Techanko Dam; Terry 2 Reservoir Report
Last Updated: December 6, 2025
Techanko Dam, also known as Terry 2 or Wetland #2, is a privately owned earth dam located in Billings, North Dakota.
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Summary
Designed by USFWS and completed in 2001, this dam serves multiple purposes including fire protection, stock, and small fish pond. With a height of 13 feet and a length of 255 feet, Techanko Dam has a storage capacity of 72.2 acre-feet and covers a surface area of 8.5 acres.
The dam, situated on the Knife River-TR, is regulated by the North Dakota State Water Commission and is subject to state permitting, inspection, and enforcement. With a spillway width of 60 feet and an uncontrolled spillway type, Techanko Dam has a low hazard potential and a moderate risk assessment rating. The dam's outlet gates are vertical lift, and it is primarily constructed with earth and stone materials on a soil foundation.
Despite being not rated for condition assessment, Techanko Dam plays a crucial role in the local ecosystem as well as in providing essential resources for fire protection and agriculture. With its strategic location and design, this dam stands as a testament to the importance of water resource management and climate resilience in North Dakota.
Year Completed |
2001 |
Dam Length |
255 |
Dam Height |
13 |
River Or Stream |
KNIFE RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
8.5 |
Drainage Area |
2.31 |
Nid Storage |
72.2 |
Outlet Gates |
Vertical Lift |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Techanko Dam; Terry 2