Middle Cooperstown
Middle Cooperstown is an earth dam located in Tuolumne County, California, built in 1947. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Middle Cooperstown
The primary purpose of Middle Cooperstown is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Jack Gardella (private). It impounds the Tr Dry Creek.
The dam stands 24 feet tall and stretches 550 feet across, creates a reservoir covering 17 acres, and has a maximum storage capacity of 90 acre-feet. Completed in 1947, the structure is well-established, with more than 75 years of service.
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 08/01/2024.
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Location
| State | California |
| County | Tuolumne |
| River/Stream | Tr Dry Creek |
| Coordinates | 37.75020, -120.53830 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 550 ft |
| Year Completed | 1947 (79 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Surface Area | 17 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Jack Gardella |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/01/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA01306 |
| Federal ID | CA01306 |
| More Info | State Dam Safety Program |