Mattingly
Mattingly is an earth dam located in Larimer County, Colorado, built in 1969. It carries a Low hazard potential classification.
About Mattingly
The primary purpose of Mattingly is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dave And Kae Rosgen (dave Rosgen) (private). It impounds the Dry Creek near Fort Collins.
The dam stands 54 feet tall and stretches 1,052 feet across, creates a reservoir covering 50 acres, has a maximum storage capacity of 820 acre-feet, and collects water from a drainage area of 9 square miles. Completed in 1969, 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. The most recent inspection on record was 10/11/2013. That was over 12 years ago.
At 54 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Colorado |
| County | Larimer |
| Nearest City | Fort Collins |
| River/Stream | Dry Creek |
| Coordinates | 40.74350, -105.10116 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 54 ft |
| Dam Height | 26 ft |
| Dam Length | 1,052 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 820 acre-ft |
| Max Storage | 820 acre-ft |
| Normal Storage | 570 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 9 sq mi |
| Max Discharge | 1,300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DAVE AND KAE ROSGEN (DAVE ROSGEN) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 10/11/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00142 |
| Federal ID | CO00142 |
| More Info | State Dam Safety Program |