Legend (dep/Maine_DEP_Water_Classification_History)

2019 (22) AA A B C GPA Changes 2009-2019 (21) AA A B 2009 (20) AA A B C GPA Changes 2003-2009 (19) AA A B 2003 (18) AA A B C GPA Changes 1999-2003 (17) AA A B 1999 (16) AA A B C GPA Changes 1993-1999 (15) AA A B C 1993 (14) AA A B C GPA Changes 1990-1993 (13) AA A C 1990 (12) AA A B C GPA Changes 1989-1990 (11) AA A B B to C 1989 (10) AA A B C GPA Changes 1987-1989 (9) AA A B C 1987 (8) AA A B C GPA 1979 (7) AA A B-1 B-2 C D UC GPA Changes 1970-1979 (6) AA A B-1 B-2 C D UC GPA 1970 (5) AA A B-1 B-2 C D UC GPA Changes 1965-1970 (4) AA A B-1 B-2 C D UC GPA 1965 (3) AA A B-1 B-2 C D UC GPA Major Rivers (2) Lakes (1) HUC8 Units (0)