Silliman Dam
Silliman Dam is an earth dam located in Madison County, Iowa, built in 1995. It carries a Low hazard potential classification.
About Silliman Dam
The primary purpose of Silliman 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 C Dwite Silliman (private). It impounds the Tr- North River near Norwalk.
The dam stands 36 feet tall and stretches 590 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 33 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1995, the structure is 31 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 36 feet, this dam is taller than 83% 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 | Madison |
| Nearest City | Norwalk |
| River/Stream | Tr- North River |
| Coordinates | 41.37140, -93.83670 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 590 ft |
| Year Completed | 1995 (31 years old) |
Storage & Hydraulics
| NID Storage | 33 acre-ft |
| Max Storage | 33 acre-ft |
| Normal Storage | 10 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | C Dwite Silliman |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02990 |
| Federal ID | IA02990 |
| More Info | State Dam Safety Program |