Petry
Petry is an earth dam located in Jackson County, Colorado, built in 1964. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Petry
The primary purpose of Petry is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by 4900 Inc. (jim Elliott) (private). It impounds the Big Grizzly-tr near Cowdrey.
The dam stands 29 feet tall and stretches 463 feet across, creates a reservoir covering 10 acres, and has a maximum storage capacity of 132 acre-feet. Completed in 1964, the structure is well into its service life at over 50 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 01/01/1994. That was over 32 years ago.
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Location
| State | Colorado |
| County | Jackson |
| Nearest City | Cowdrey |
| River/Stream | Big Grizzly-tr |
| Coordinates | 40.60381, -106.42322 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 26 ft |
| Dam Length | 463 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 132 acre-ft |
| Max Storage | 132 acre-ft |
| Normal Storage | 82 acre-ft |
| Surface Area | 10 acres |
| Max Discharge | 450 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Recreation |
| Owner | 4900 INC. (JIM ELLIOTT) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/01/1994 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO01000 |
| Federal ID | CO01000 |
| More Info | State Dam Safety Program |