Summary
It stands at a height of 11 feet and has a length of 930 feet, with a storage capacity of 53 acre-feet. The dam, made of earth with a soil foundation, is situated on the TR- Holland Creek, serving as a vital resource for water management in the area.
Managed by the Iowa Department of Natural Resources, the Holland Marsh Dam is deemed to have low hazard potential and a moderate risk assessment. While it has not been rated for its condition, the dam is regularly inspected, permitted, and enforced by state regulatory agencies. With its uncontrolled spillway and a surface area of 8.4 acres, the dam plays a crucial role in mitigating flood risks and protecting the surrounding community.
Climate enthusiasts and water resource experts alike can appreciate the significance of the Holland Marsh Dam in maintaining water quality and supporting recreational activities in the region. As a key infrastructure for water management, the dam exemplifies the importance of sustainable engineering practices and effective risk assessment in safeguarding communities from potential hazards and ensuring the resilience of water resources in the face of a changing climate.
Year Completed |
1997 |
Dam Length |
930 |
Dam Height |
11 |
River Or Stream |
TR- HOLLAND CREEK |
Primary Dam Type |
Earth |
Surface Area |
8.4 |
Drainage Area |
0.17 |
Nid Storage |
53 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
11 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Beaver Creek At New Hartford
|
123cfs |
Black Hawk Creek At Hudson
|
103cfs |
South Fork Iowa River Ne Of New Providence
|
79cfs |
Cedar River At Cedar Falls
|
1880cfs |
West Fork Cedar River At Finchford
|
502cfs |
Iowa River At Marshalltown
|
1040cfs |
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.
Holland Marsh Dam