Based on the latest information available, the boat ramp named Smith Road Helena Valley Northeast is located in Montana at latitude 46.70194244 and longitude -111.95745087. This boat ramp is a concrete ramp that is open year-round and is maintained by the Montana Fish, Wildlife & Parks Department. The ramp is relatively wide, with a width of approximately 16 feet, which allows for easy access and launching of boats.

The Smith Road Helena Valley Northeast boat ramp services the Missouri River, which is a popular destination for boating and fishing enthusiasts. The Missouri River stretches over 2,300 miles from its headwaters in Montana to its confluence with the Mississippi River in Missouri. It is a popular destination for recreational boating, fishing, and wildlife viewing.

As for the type of craft that are permitted on the water, the Montana Fish, Wildlife & Parks Department regulations state that all watercraft with motors, sailboats, canoes, and kayaks are permitted on the Missouri River. However, it is important to note that specific regulations and restrictions may vary depending on the location and season, so it is always best to research and comply with the latest regulations before launching any watercraft.

In conclusion, the Smith Road Helena Valley Northeast boat ramp in Montana is a concrete ramp that services the Missouri River. It is wide enough for easy access and launching of boats, and all types of watercraft are permitted on the water, subject to applicable regulations and restrictions.