Jones Dam is an earth dam located in Clark County, Washington, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 366 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 Jones Dam
The primary purpose of Jones Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Gene & Janejones (private). It impounds the Tr-rock Creek near La Center.
The dam stands 20 feet tall and stretches 366 feet across, creates a reservoir covering 22 acres, has a maximum storage capacity of 100 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1977, the structure is 49 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 | Washington |
| County | Clark |
| Nearest City | La Center |
| River/Stream | Tr-rock Creek |
| Coordinates | 45.89497, -122.49806 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Length | 366 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 42 acre-ft |
| Surface Area | 22 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 610 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Gene & Janejones |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00368 |
| Federal ID | WA00368 |
| More Info | State Dam Safety Program |