Arcadia Upper
Arcadia Upper is a dam located in Fremont County, Idaho, built in 1912. It carries a Low hazard potential classification and has a poor condition assessment.
About Arcadia Upper
The primary purpose of Arcadia Upper is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is private-owned. It impounds the Sand Creek Henrys Fork near St Anthony.
The dam stands 21 feet tall and stretches 550 feet across, creates a reservoir covering 40 acres, has a storage capacity of 300 acre-feet, and collects water from a drainage area of 69 square miles. Completed in 1912, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/17/2017.
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Location
| State | Idaho |
| County | Fremont |
| Nearest City | St Anthony |
| River/Stream | Sand Creek Henrys Fork |
| Coordinates | 44.14202, -111.59562 |
Physical Characteristics
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 550 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 300 acre-ft |
| Normal Storage | 300 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 69 sq mi |
| Max Discharge | 36 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/17/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00231 |
| Federal ID | ID00231 |
| More Info | State Dam Safety Program |