Lory Lake Structure 1 Reservoir Report
Last Updated: December 14, 2025
Lory Lake Structure 1, also known as Cranberry Wma Lory Lake, is a state-owned gravity dam located in Isanti, Minnesota.
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Summary
Completed in 1962, this structure serves as a Fish and Wildlife Pond with a storage capacity of 2100 acre-feet. With a structural height of 16 feet and a length of 800 feet, Lory Lake Structure 1 plays a crucial role in managing water resources in the area.
The dam is situated on Ties Creek-TR and has a drainage area of 4 square miles, with a surface area of 341 acres. Despite its low hazard potential and satisfactory condition assessment, the risk assessment categorizes Lory Lake Structure 1 as having a very high risk level. It is regularly inspected every 8 years by the Minnesota Department of Natural Resources, ensuring its safety and functionality for the surrounding environment.
With its controlled spillway and primary purpose of providing habitat for fish and wildlife, Lory Lake Structure 1 stands as a vital component of the water infrastructure in the region. Its significance lies not only in flood control and water storage but also in supporting the ecological diversity and sustainability of the area. For water resource and climate enthusiasts, understanding the role and condition of structures like Lory Lake Structure 1 is essential for promoting effective water management practices.
Year Completed |
1962 |
Dam Length |
800 |
Dam Height |
7 |
River Or Stream |
TIES CREEK-TR |
Primary Dam Type |
Gravity |
Surface Area |
341 |
Drainage Area |
4 |
Nid Storage |
2100 |
Structural Height |
16 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
16 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Snake River Near Pine City
|
118cfs |
Rum River Near St. Francis
|
209cfs |
Elk River Near Big Lake
|
274cfs |
Kettle River Below Sandstone
|
170cfs |
Mississippi River At Anoka
|
3240cfs |
Elm Creek Nr Champlin
|
5cfs |
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.
Lory Lake Structure 1