Casad Dam
Casad Dam is an arch dam located in Kitsap County, Washington, built in 1956. It carries a High hazard potential classification and has a fair condition assessment.
About Casad Dam
The primary purpose of Casad Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Bremerton City (local government). It impounds the Union River near Belfair.
The dam stands 190 feet tall and stretches 416 feet across, creates a reservoir covering 40 acres, has a maximum storage capacity of 4,500 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1956, the structure is well into its service life at over 50 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 08/22/2023.
At 190 feet, this dam is taller than 99% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Washington dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Washington |
| County | Kitsap |
| Nearest City | Belfair |
| River/Stream | Union River |
| Coordinates | 47.53725, -122.77961 |
Physical Characteristics
| Dam Type | Arch |
| NID Height | 190 ft |
| Dam Length | 416 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 4,500 acre-ft |
| Max Storage | 4,500 acre-ft |
| Normal Storage | 4,260 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 520 cfs |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Bremerton City |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Fair |
| Last Inspection | 08/22/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00171 |
| Federal ID | WA00171 |
| More Info | State Dam Safety Program |