Larsen Dam
Larsen Dam is an earth dam located in Pottawattamie County, Iowa, built in 1959. It carries a Low hazard potential classification.
About Larsen Dam
The primary purpose of Larsen 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 Harold Larsen (private). It impounds the Tr-mosquito Creek near Neola.
The dam stands 38 feet tall and stretches 816 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 122 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1959, the structure is well into its service life at over 50 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. The most recent inspection on record was 10/28/1960. That was over 65 years ago.
At 38 feet, this dam is taller than 85% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Pottawattamie |
| Nearest City | Neola |
| River/Stream | Tr-mosquito Creek |
| Coordinates | 41.47110, -95.63190 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 816 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 122 acre-ft |
| Max Storage | 122 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Harold Larsen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 10/28/1960 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00957 |
| Federal ID | IA00957 |
| More Info | State Dam Safety Program |