Coralville Lake is a 5,340 acre Army Corps of Engineers reservoir, impounding water on the Iowa River. Facilities include Lake Macbride State Park, seven Corps of Engineer campgrounds, two marinas and multiple boat ramps.
Coralville was named after coral formations discovered in 1866, when the foundation was dug for a woolen mill. The coral is a remnant of a reef in the the ocean that covered the area 380 million years ago.
     Coralville is not used by sailboats due to the heavy use by power boats. There is some use by sailboards but not much.

    Lake MacBride is located in the East, South-East part of Iowa. It is approx. 12 miles south of Cedar Rapids Ia..
    The lake is maintained by the Iowa Dept. of Natural Resources. MacBride Lake has a surface area of 812 acres. A 10hp motor limit is in effect on Lake MacBride between May 21 thru Sept. 7.
    The lake is really more of an extension of Coralville Lake, although MacBride is older. The Macbride Nature Recreation Area also serves as the base for the University of Iowa Sailing Club, with a boat dock on the lake.