Simonsen Subwatershed Sta 142+42 Main Reservoir Report
Last Updated: December 13, 2025
Simonsen Subwatershed Sta 142+42 Main, located in Cherokee, Iowa, is a vital water resource managed by the local government.
°F
°F
mph
Wind
%
Humidity
Summary
This earth dam, completed in 1952 by the USDA NRCS, serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a height of 33 feet and a storage capacity of 150 acre-feet, this dam plays a crucial role in managing water resources in the area.
Situated on Rock Creek, this dam has a low hazard potential and a moderate risk assessment rating. Despite not having a current condition assessment, it is regulated by the Iowa DNR and undergoes regular inspections, permitting, and enforcement to ensure its structural integrity and functionality. The dam's location, dimensions, and design make it a key feature in the watershed, contributing to water conservation efforts and providing essential services to the community.
Simonsen Subwatershed Sta 142+42 Main is a significant infrastructure project that exemplifies the importance of sustainable water management and climate resilience. With its strategic location, purposeful design, and state-regulated operations, this dam serves as a critical asset in protecting the environment, mitigating flood risks, and supporting the local ecosystem. Water resource and climate enthusiasts can appreciate the role of this dam in promoting water security and environmental stewardship in the region.
Year Completed |
1952 |
Dam Length |
400 |
Dam Height |
33 |
River Or Stream |
ROCK CREEK |
Primary Dam Type |
Earth |
Surface Area |
8 |
Drainage Area |
1.37 |
Nid Storage |
150 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Sioux River At Correctionville
|
327cfs |
Little Sioux River At Linn Grove
|
257cfs |
Floyd River At Alton
|
36cfs |
Floyd River At James
|
187cfs |
Maple River At Mapleton
|
323cfs |
West Fork Ditch At Hornick
|
80cfs |
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.
Simonsen Subwatershed Sta 142+42 Main