Hearn Dam is an earth dam located in Tyler County, Texas. It carries a Significant hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 550 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 Hearn Dam
The primary purpose of Hearn Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Three Rivers Council Boy Scouts of America (private). It impounds the Magnus Branch.
The dam stands 17 feet tall and stretches 550 feet across, and has a maximum storage capacity of 68 acre-feet.
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. An emergency action plan is in place for this dam. The most recent inspection on record was 09/29/2009. That was over 17 years ago.
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Location
| State | Texas |
| County | Tyler |
| River/Stream | Magnus Branch |
| Coordinates | 30.74071, -94.44240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 550 ft |
Storage & Hydraulics
| NID Storage | 68 acre-ft |
| Max Storage | 68 acre-ft |
| Normal Storage | 28 acre-ft |
| Max Discharge | 3,768 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Three Rivers Council Boy Scouts of America |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 09/29/2009 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | TX09407 |
| Federal ID | TX09407 |
| More Info | State Dam Safety Program |