Anderson Dam
Anderson Dam is a rockfill dam located in Clark County, Washington, built in 1987. It carries a Low hazard potential classification.
About Anderson Dam
The primary purpose of Anderson Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Royal Ridges Retreat (private). It impounds the Tr-rock Creek near La Center.
The dam stands 15 feet tall and stretches 310 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 197 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1987, the structure is 39 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 | 45.87893, -122.46618 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 15 ft |
| Dam Length | 310 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 197 acre-ft |
| Max Storage | 197 acre-ft |
| Normal Storage | 112 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 485 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Royal Ridges Retreat |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00390 |
| Federal ID | WA00390 |
| More Info | State Dam Safety Program |