According to the Arkansas Game and Fish Commission website, the Edgemont Road Greers Ferry boat ramp is a concrete boat ramp that is open year-round. It services Greers Ferry Lake, which is a 40,000-acre reservoir located in north-central Arkansas. The website states that the ramp is "wide enough for most boats," but does not provide an exact measurement.

As for the types of craft permitted on the water, the website states that "all types of boats are allowed on the lake, but only electric trolling motors are allowed on the Little Red River downstream of the dam." It is important to note that regulations and restrictions regarding watercraft may change, so it is recommended to check with the Arkansas Game and Fish Commission for the most up-to-date information.

In summary, the Edgemont Road Greers Ferry boat ramp is a concrete boat ramp servicing Greers Ferry Lake in Arkansas. It is open year-round and allows for most types of boats, with electric trolling motors only permitted on the Little Red River downstream of the dam. The exact width of the ramp is not provided on the website.