Tenhulzen Dam
Tenhulzen Dam is an earth dam located in Crawford County, Iowa, built in 1991. It carries a Low hazard potential classification.
About Tenhulzen Dam
The primary purpose of Tenhulzen Dam is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Jack Tenhulzen (private). It impounds the Tr-east Boyer River near Denison.
The dam stands 20 feet tall and stretches 350 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 50 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1991, the structure is 35 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Iowa |
| County | Crawford |
| Nearest City | Denison |
| River/Stream | Tr-east Boyer River |
| Coordinates | 42.03000, -95.30000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 350 ft |
| Year Completed | 1991 (35 years old) |
Storage & Hydraulics
| NID Storage | 50 acre-ft |
| Max Storage | 50 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Jack Tenhulzen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02602 |
| Federal ID | IA02602 |
| More Info | State Dam Safety Program |