St. Thomas More Silt Dam is an earth dam located in Guthrie County, Iowa, built in 1995. It carries a Low hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 305 ft long, taller than 80% 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 St. Thomas More Silt Dam
The primary purpose of St. Thomas More Silt Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Lake Panorama Association (private). It impounds the Tr- Lake Panorama near Lake Panorama.
The dam stands 35 feet tall and stretches 305 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 110 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 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Iowa |
| County | Guthrie |
| Nearest City | Lake Panorama |
| River/Stream | Tr- Lake Panorama |
| Coordinates | 41.72260, -94.42270 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 305 ft |
| Year Completed | 1995 (31 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Normal Storage | 51 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Lake Panorama Association |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03127 |
| Federal ID | IA03127 |
| More Info | State Dam Safety Program |