Toland Mine is an earth dam located in Cumberland County, Pennsylvania, built in 1981. It carries a Low hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall and 400 ft long, taller than 62% 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 Toland Mine
The primary purpose of Toland Mine is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Hempt Brothers, Inc. (private). It impounds the Tr Mountain Creek.
The dam stands 28 feet tall and stretches 400 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 85 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1981, the structure is 45 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. The most recent inspection on record was 05/25/2016. That was over 10 years ago.
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Location
| State | Pennsylvania |
| County | Cumberland |
| River/Stream | Tr Mountain Creek |
| Coordinates | 40.07667, -77.20861 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 400 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 85 acre-ft |
| Max Storage | 85 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Tailings |
| Owner | Hempt Brothers, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/25/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | PA01539 |
| Federal ID | PA01539 |
| More Info | State Dam Safety Program |