Johnson is an earth dam located in Larimer County, Colorado, built in 1944. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 450 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 Johnson
The primary purpose of Johnson is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Debbi Pinardi (pinardi, Debby) (private). It impounds the Slough Creek-tr near Woods Landing Wyoming.
The dam stands 8 feet tall and stretches 450 feet across, creates a reservoir covering 44 acres, and has a maximum storage capacity of 573 acre-feet. Completed in 1944, 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. The most recent inspection on record was 05/14/2021.
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Location
| State | Colorado |
| County | Larimer |
| Nearest City | Woods Landing Wyoming |
| River/Stream | Slough Creek-tr |
| Coordinates | 40.94667, -106.01057 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 450 ft |
| Year Completed | 1944 (82 years old) |
Storage & Hydraulics
| NID Storage | 573 acre-ft |
| Max Storage | 573 acre-ft |
| Normal Storage | 133 acre-ft |
| Surface Area | 44 acres |
| Max Discharge | 2,600 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Debbi Pinardi (pinardi, Debby) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/14/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | CO00375 |
| Federal ID | CO00375 |
| More Info | State Dam Safety Program |