Lake Echo Dam is an earth dam located in Grundy County, Tennessee, built in 1972. It carries a Significant hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 290 ft long. 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 Lake Echo Dam
Lake Echo Dam is a dam in Grundy, Tennessee. The dam is owned by Dolph Hargis Heirs (local government). It impounds the Little Fiery Gizzard Ck.
The dam stands 22 feet tall and stretches 290 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 93 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1972, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 05/20/2021.
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Location
| State | Tennessee |
| County | Grundy |
| River/Stream | Little Fiery Gizzard Ck |
| Coordinates | 35.26306, -85.71222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Length | 290 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 93 acre-ft |
| Max Storage | 93 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Owner | Dolph Hargis Heirs |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/20/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | TN06108 |
| Federal ID | TN06108 |
| More Info | State Dam Safety Program |