East Fork Grand River Watershed Site E-30 Reservoir Report
Last Updated: December 12, 2025
East Fork Grand River Watershed Site E-30, located in Ringgold County, Iowa, is a flood risk reduction structure designed by the USDA NRCS and completed in 2006.
°F
°F
mph
Wind
%
Humidity
Summary
This earth dam has a height of 25 feet and a length of 590 feet, with a storage capacity of 160 acre-feet. The primary purpose of this dam is flood risk reduction, serving to protect the local area from potential flooding events along Tr-Tuckers Creek.
Managed by the Iowa DNR, this site is state-regulated and permitted, with inspections and enforcement in place to ensure its functionality and safety. With a low hazard potential and moderate risk assessment rating, this dam plays a crucial role in managing water resources in the region. Despite its relatively small drainage area of 0.52 square miles, the East Fork Grand River Watershed Site E-30 serves as a vital infrastructure in safeguarding the surrounding community from potential flood risks.
With its location in the Rock Island District and under the jurisdiction of the State of Iowa, the East Fork Grand River Watershed Site E-30 stands as a testament to effective water resource management and climate resilience efforts in the area. As water resource and climate enthusiasts, understanding the design, purpose, and regulatory framework of this structure provides valuable insight into the importance of flood risk reduction measures in safeguarding communities and ecosystems against the impacts of extreme weather events.
Year Completed |
2006 |
Dam Length |
590 |
Dam Height |
25 |
River Or Stream |
Tr-Tuckers Creek |
Primary Dam Type |
Earth |
Surface Area |
10 |
Drainage Area |
0.52 |
Nid Storage |
160 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
East Fork Grand River Watershed Site E-30