Summary
Completed in 2013, this earth dam stands at a height of 12.5 feet and has a maximum storage capacity of 203.6 acre-feet. The dam's primary purpose is listed as "Other" and serves as a critical component for managing water resources in the area.
With a low hazard potential and a satisfactory condition assessment as of September 2020, Tonawanda LLC Lagoon Dam plays a vital role in flood control and water management for the North Loup River. The dam's design features a stone core and soil foundation, ensuring its structural integrity for years to come. Additionally, the dam has a drainage area of 0.04 square miles and a surface area of 25.94 acres, making it a significant resource for the surrounding community.
Despite its relatively low hazard potential, Tonawanda LLC Lagoon Dam is subject to regular inspections, with the most recent one conducted in September 2020. The dam's emergency action plan status and risk assessment measures are currently not available, highlighting the need for continued monitoring and maintenance to safeguard against potential risks. As a crucial component of water resource management in the region, this dam serves as a reminder of the importance of sustainable infrastructure for climate resilience and adaptation.
Year Completed |
2013 |
Dam Length |
4920 |
Dam Height |
12.5 |
River Or Stream |
TR-NORTH LOUP RIVER |
Primary Dam Type |
Earth |
Surface Area |
25.94 |
Hydraulic Height |
8.5 |
Drainage Area |
0.04 |
Nid Storage |
203.6 |
Structural Height |
12.5 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
13 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Middle Loup River At Dunning
|
538cfs |
North Loup R At Brewster
|
412cfs |
Dismal River Near Thedford
|
271cfs |
North Loup River At Taylor
|
615cfs |
Long Pine Creek Near Riverview
|
185cfs |
Niobrara River Near Sparks
|
888cfs |
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.
Tonawanda Llc Lagoon Dam