Morgan #1
Morgan #1 is an earth dam located in Valley County, Montana, built in 1967. It carries a Low hazard potential classification.
About Morgan #1
The primary purpose of Morgan #1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Mogan Ranch Inc. (private). It impounds the Long Coulee near Vandalia.
The dam stands 10 feet tall and stretches 900 feet across, and has a maximum storage capacity of 572 acre-feet. Completed in 1967, 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.
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Location
| State | Montana |
| County | Valley |
| Nearest City | Vandalia |
| River/Stream | Long Coulee |
| Coordinates | 48.41940, -106.98710 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 900 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 572 acre-ft |
| Max Storage | 572 acre-ft |
| Normal Storage | 196 acre-ft |
Ownership & Safety
| Purpose | Irrigation |
| Owner | MOGAN RANCH INC. |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT02609 |
| Federal ID | MT02609 |
| More Info | State Dam Safety Program |