Christmas Lake is a spring-fed lake covering approximately 265 acres (1.1 km2) in the western Minneapolis suburbs of Shorewood and Chanhassen in the U.S.A. Christmas Lake is known for its exceptional water clarity, the best in the Minneapolis metropolitan area, with a DNR reported clarity level of 20 feet (6.10 m). Although relatively small in area, Christmas Lake becomes very deep very quickly, with a maximum depth of 87 ft (27 m), forming the basin of a depression that extends all along the rim of the lake and is known as the Ridge.
Although Christmas Lake is located very near to the much larger and more populated Lake Minnetonka, the lake culture is much different, with fewer powerboats and JetSkis. Christmas Lake is connected to Lake Minnetonka by an underground canal which can be used to raise the water level of Lake Minnetonka during droughts.
The lake is named for Charles W. Christmas, first county surveyor of Hennepin County, who platted the original town site of Minneapolis.