Neva Anderson Trust Dam is an earth dam located in Montgomery County, Iowa, built in 2021. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 410 ft long, taller than 76% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Neva Anderson Trust Dam
The primary purpose of Neva Anderson Trust Dam is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Neva Anderson Trust (private). It impounds the Tr-nodaway R near Villisca.
The dam stands 33 feet tall and stretches 410 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 37 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2021, the structure is relatively new.
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.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Iowa |
| County | Montgomery |
| Nearest City | Villisca |
| River/Stream | Tr-nodaway R |
| Coordinates | 41.02680, -94.93350 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 410 ft |
| Year Completed | 2021 (5 years old) |
Storage & Hydraulics
| NID Storage | 37 acre-ft |
| Max Storage | 37 acre-ft |
| Normal Storage | 13 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 44 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Neva Anderson Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA04439 |
| Federal ID | IA04439 |
| More Info | State Dam Safety Program |