VACATION OKOBOJI! The West Okoboji lifestyle tends to be a casual one in the spring and summer months when visitors to the area begin arriving to enjoy lake activities and the local events. Family reunions and fun BBQ gatherings are a familiar and enjoyable way to spend lazy days on the lake. Water sports on West Lake Okoboji range from sailing to scuba diving and from swimming to water skiing. Sandy beaches invite all to spend lazy afternoons by the shore and in the swimming areas. For the more daring, wind surfing and para-sailing provide more opportunities for excitement. The lake's maximum depth is 136 feet, making it the deepest lake in Iowa and second in size only to Spirit Lake.