Based on the latest available information, the Redlands Dam River Access boat ramp is located in Colorado, with latitude and longitude coordinates of 39.02979247700006 and -108.56233574099997, respectively. It is a public access boat ramp that provides access to the Colorado River.

The boat ramp is reportedly 30 feet wide, which should be sufficient to accommodate a range of watercraft sizes. As for the body of water it services, the Colorado River is a major waterway that flows through several Western states, including Colorado, Utah, and Arizona. It is known for its scenic beauty and recreational opportunities, including boating, fishing, and rafting.

In terms of permitted watercraft, the latest available information indicates that motorized boats are permitted on the Colorado River, subject to certain regulations and restrictions. Some of these restrictions include limits on speed, noise, and wake, as well as rules regarding safety equipment and navigation. Non-motorized watercraft such as kayaks and canoes are also permitted.

Overall, the Redlands Dam River Access boat ramp appears to be a well-maintained and functional access point for boaters and other water enthusiasts looking to explore the Colorado River in Colorado.