Lansink Dam Reservoir Report
Last Updated: December 14, 2025
Lansink Dam, located in Ida Grove, Iowa, is a privately owned structure designed by NRCS for fire protection, stock, or small fish pond purposes.
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Summary
Completed in 2008, this earth dam stands at a height of 21 feet and spans 395 feet in length, with a storage capacity of 53 acre-feet. Situated on TR- Hoskins Creek, the dam serves as a crucial resource for water management in the area, with a surface area of 4.9 acres and a drainage area of 0.3 square miles.
Despite being classified as low hazard potential with a moderate risk assessment, Lansink Dam has not been rated for its condition. However, it is equipped with an uncontrolled spillway and has a spillway width of 2 feet. While the dam has not been modified in recent years and lacks certain emergency preparedness measures like an EAP and updated inundation maps, it remains a significant asset for the community in terms of water resource management. With its strategic location and purposeful design, Lansink Dam plays a vital role in maintaining water supply and protecting against potential hazards for residents in the surrounding area.
Year Completed |
2008 |
Dam Length |
395 |
Dam Height |
21 |
River Or Stream |
TR- HOSKINS CREEK |
Primary Dam Type |
Earth |
Surface Area |
4.9 |
Drainage Area |
0.3 |
Nid Storage |
53 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
21 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
North Raccoon River Near Sac City
|
312cfs |
Maple River At Mapleton
|
323cfs |
Little Sioux River At Correctionville
|
327cfs |
West Fork Ditch At Hornick
|
80cfs |
Little Sioux River Near Turin
|
1040cfs |
Monona-Harrison Ditch Near Turin
|
158cfs |
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.
Lansink Dam