Land 853 3 850 -930 1783 Inland Waters 3 -1 4 -11 14 Offshore 29 -5 34 -31 60 United States Total 885 -3 888 -972 1857 Gulf Of Mexico 28 -5 33 -30 58 Canada 72 -5 77 -82 154 North America 957 -8 965 -1054 201