Lake Thornhill Dam
Lake Thornhill Dam is an earth dam located in Pearl River County, Mississippi, built in 2004. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Lake Thornhill Dam
The primary purpose of Lake Thornhill Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Sidco, Inc. (private). It impounds the Unt Of Davis Creek.
The dam stands 28 feet tall and stretches 1,450 feet across, creates a reservoir covering 55 acres, has a maximum storage capacity of 440 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 2004, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 01/27/2004. That was over 22 years ago.
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Location
| State | Mississippi |
| County | Pearl River |
| River/Stream | Unt Of Davis Creek |
| Coordinates | 30.76031, -89.41978 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 24 ft |
| Dam Length | 1,450 ft |
| Year Completed | 2004 (22 years old) |
Storage & Hydraulics
| NID Storage | 440 acre-ft |
| Max Storage | 440 acre-ft |
| Normal Storage | 275 acre-ft |
| Surface Area | 55 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,867 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | SIDCO, INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/27/2004 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MS03610 |
| Federal ID | MS03610 |
| More Info | State Dam Safety Program |