Lake Lanier is one of the most popular year-round destinations under U.S. Army Corps of Engineers jurisdiction, drawing more than 7.5 million visitors each year. Visits to the lake spike as summer temperatures begin their ascent during the proverbial dog days — and more so during this extended Independence Day holiday. Col. James DeLapp, the Army Corps of Engineers district commander in Mobile, Ala., that supervises Lake Lanier, said full capacity is expected during the festive Fourth of July holiday.