The boat ramp named Wawawai Grade Road 618-628 is located in Pomeroy, Washington, at coordinates 46.65193939 latitude and -117.41777802 longitude. This boat ramp is situated on the Snake River, and it services the waters of the river.

According to the latest information available, the Wawawai Grade Road 618-628 boat ramp is a concrete ramp that is 16 feet wide and extends into the water. The ramp has a moderate slope, making it suitable for launching a wide range of boats, from small fishing boats to larger recreational boats.

The Snake River, serviced by the Wawawai Grade Road 618-628 boat ramp, is a popular destination for boaters and anglers alike. The river is home to a variety of fish species, including steelhead, salmon, and bass, making it a prime location for fishing enthusiasts. The river is also a popular spot for water sports such as water skiing and wakeboarding.

In terms of the types of craft permitted on the Snake River at this boat ramp, there are no specific restrictions mentioned. However, it is important to note that all boaters must comply with state and federal regulations regarding boating safety and equipment requirements.

Overall, the Wawawai Grade Road 618-628 boat ramp is a well-maintained and accessible launch point for boaters and anglers, servicing the Snake River in Pomeroy, Washington.