Status Summary Of Minerals Management Service Planning Area 

Conversion From NAD 27 To NAD 83/WGS 84 

As Of April 6, 2004 

Region Planning Area Datum Status 

Atlantic Mid Atlantic NAD 83/WGS 84 Official boundary and areal 

(MDA) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

 North Atlantic 

(NOA) 

NAD 83/WGS 84 Official boundary and areal 

measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

 South Atlantic NAD 83/WGS 84 Official boundary and areal 

(SOA) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

Straits of Florida NAD 83/WGS 84 Official boundary and areal 

(FLS) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

Gulf of Mexico Central Gulf of 

Mexico (CGM) 

NAD 27 Official boundary and areal 

measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

Not planned for conversion to NAD 83 

at this time. 

Eastern Gulf of 

Mexico (EGM) 

NAD 27 Official boundary and areal 

measurement data computed and 

published for the entire planning area 

north of 27°N latitude. Official 

boundary and areal measurement data 

south of 27°N latitude, except the 

Continental Shelf Boundary, pending 

approval of the State of Florida. Not 

planned for conversion to NAD 83 at 

this time. 

Western Gulf of NAD 27 Official boundary and areal 

Mexico (WGM) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

Not planned for conversion to NAD 83 

at this time. 

Pacific Central California 

(CEC) 

NAD 83/WGS 84 Official boundary and areal 

measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 
Region Planning Area Datum Status 

Pacific Northern NAD 83/WGS 84 Official boundary and areal 

California (NOC) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

Southern NAD 83/WGS 84 Official boundary and areal 

California (SOC) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

WashingtonOregon (WAO) NAD 83/WGS 84 Official boundary and areal 

measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

Alaska Aleutian Arc NAD 83/WGS 84 Only “all-wet” (i.e., no boundaries) 

(ALA) Official Protraction Diagrams published.

 Aleutian Basin NAD 83/WGS 84 Only “all-wet” (i.e., no boundaries) 

(ALB) Official Protraction Diagrams published.

 Beaufort Sea NAD 83/WGS 84 Official boundary and areal 

(BFT) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

 Bowers Basin NAD 83/WGS 84 Only “all-wet” (i.e., no boundaries) 

(BOW) Official Protraction Diagrams published.

 Chukchi Sea NAD 83/WGS 84 Official boundary and areal 

(CHU) measurement data computed and 

published for the entire planning area, 

except the Continental Shelf Boundary. 

Cook Inlet (COK) NAD 83/WGS 84 Official boundary and areal 

measurement data computed and 

published for the entire planning area. 

Gulf of Alaska NAD 83/WGS 84 Official boundary and areal 

(GOA) measurement data computed and 

published for the “Yakutat sub-area;” 

“all-wet” (i.e., no boundaries) Official 

Protraction Diagrams published; 

computations for the remainder of the 

planning area, except the Continental 

Shelf Boundary, in progress. 

Hope Basin (HOP) NAD 83/WGS 84 Computations in progress. 

Kodiak (KOD) NAD 83/WGS 84 Computations in progress. 

 Navarin Basin NAD 83/WGS 84 Only “all-wet” (i.e., no boundaries) 

(NAV) Official Protraction Diagrams published.

 North Aleutian NAD 83/WGS 84 Computations in progress. 

Basin (NAL) 

 Norton Basin NAD 83/WGS 84 Computations in progress. 

(NOR) 

Shumagin (SHU) NAD 83/WGS 84 Only “all-wet” (i.e., no boundaries) 

Official Protraction Diagrams published. 
Region Planning Area Datum Status 

Alaska St. George Basin NAD 83/WGS 84 Computations in progress. 

(GEO) 

 St. Matthew-Hall NAD 83/WGS 84 Only “all-wet” (i.e., no boundaries) 

(MAT) Official Protraction Diagrams published. 

Undesignated Puerto Rico/Virgin 

Islands 

NAD 83/WGS 84 Computations in progress. 

Hawaii WGS 84 Not planned for conversion to WGS 84 

at this time. 

Western Pacific WGS 84 Not planned for conversion to WGS 84 

at this time.