Based on the available information, the boat ramp CR 21 61400 is located in Nicollet County, Minnesota and has a latitude of 44.36207199 and a longitude of -94.49786377.

The type of boat ramp is not specified in the available information. However, it is likely a concrete or gravel ramp suitable for launching small to medium-sized watercraft.

The width of the boat ramp is also not specified, but it is likely wide enough to accommodate most boats.

The body of water that this boat ramp services is not specified, but based on its location in Nicollet County, it could be any of the nearby lakes or rivers.

The available information does not specify the types of watercraft permitted on the water, but it is likely that a variety of boats, including motorized and non-motorized vessels such as canoes and kayaks, are allowed.

To verify the accuracy of this information or to obtain more detailed information about the CR 21 61400 boat ramp, it is recommended that one consults with the local authorities or the official website of Nicollet County.