Iowa Noname49 is an earth dam located in Sioux County, Iowa, built in 1966. It carries a Low hazard potential classification.
Dam profile
NID height · 61 ft61 ft tall and 520 ft long, taller than 95% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Iowa Noname49
Iowa Noname49 is a dam in Sioux, Iowa. The dam is owned by Sioux County Board of Supervisors (local government). It impounds the Tr-big Sioux River near Hawarden.
The dam stands 61 feet tall and stretches 520 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 206 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1966, 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.
At 61 feet, this dam is taller than 95% of all dams in the United States.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Iowa |
| County | Sioux |
| Nearest City | Hawarden |
| River/Stream | Tr-big Sioux River |
| Coordinates | 43.22660, -96.48510 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 61 ft |
| Dam Height | 61 ft |
| Dam Length | 520 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 206 acre-ft |
| Max Storage | 206 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Sioux County Board of Supervisors |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01011 |
| Federal ID | IA01011 |
| More Info | State Dam Safety Program |