Margaret No.2 is an earth dam located in Johnson County, Wyoming, built in 2004. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 189 ft long, taller than 68% 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 Margaret No.2
The primary purpose of Margaret No.2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ggm, LLC (private). It impounds the Jennie Draw near County Road.
The dam stands 30 feet tall and stretches 189 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 38 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2004, the structure is relatively new.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/04/2019.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | County Road |
| River/Stream | Jennie Draw |
| Coordinates | 44.54030, -106.11153 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 29 ft |
| Dam Length | 189 ft |
| Year Completed | 2004 (22 years old) |
Storage & Hydraulics
| NID Storage | 38 acre-ft |
| Max Storage | 38 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2,440 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Ggm, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/04/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02321 |
| Federal ID | WY02321 |
| More Info | State Dam Safety Program |