Emerald Valley Dam
Emerald Valley Dam is an earth dam located in Clayton County, Iowa, built in 2008. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Emerald Valley Dam
The primary purpose of Emerald Valley Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Marvin Kraus (private). It impounds the Tr- Volga River near Littleport.
The dam stands 47 feet tall and stretches 675 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 349 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2008, the structure is relatively new.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/11/2023.
At 47 feet, this dam is taller than 92% of dams nationwide.
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Location
| State | Iowa |
| County | Clayton |
| Nearest City | Littleport |
| River/Stream | Tr- Volga River |
| Coordinates | 42.79260, -91.42740 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 47 ft |
| Dam Length | 675 ft |
| Year Completed | 2008 (18 years old) |
Storage & Hydraulics
| NID Storage | 349 acre-ft |
| Max Storage | 349 acre-ft |
| Normal Storage | 118 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Marvin Kraus |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/11/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03553 |
| Federal ID | IA03553 |
| More Info | State Dam Safety Program |