Nelson is a dam located in Latah County, Idaho, built in 1907. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 17 ft17 ft tall and 200 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 Nelson
The primary purpose of Nelson 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 Unnamed Stream Big Bear Creek.
The dam stands 17 feet tall and stretches 200 feet across, creates a reservoir covering 9 acres, has a storage capacity of 65 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1907, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/15/2008. That was over 17 years ago.
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Location
| State | Idaho |
| County | Latah |
| River/Stream | Unnamed Stream Big Bear Creek |
| Coordinates | 46.70730, -116.69150 |
Physical Characteristics
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 200 ft |
| Year Completed | 1907 (119 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Normal Storage | 65 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 3 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/15/2008 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00428 |
| Federal ID | ID00428 |
| More Info | State Dam Safety Program |