Table VI-4. Chesapeake Bay Program segmentation scheme segments. 
Northern Chesapeake Bay.CB1TF 
Upper Chesapeake Bay.CB20H 
Upper Central Chesapeake Bay .... CB3MH 
Middle Central Chesapeake Bay ... CB4MH 
Lower Central Chesapeake Bay .... CB5MH 
Western Lower Chesapeake Bay .... CB6PH 
Eastern Lower Chesapeake Bay .... CB7PH 
Mouth of Chesapeake Bay .CB8PH 
Bush River .BSHOH 
Gunpowder River .GUNOH 
Middle River.MIDOH 
Back River.BACOH 
Patapsco River .PATMH 
Magothy River.MAGMH 
Severn River.SEVMH 
South River.SOUMH 
Rhode River .RHDMH 
West River.WSTMH 
Upper Patuxent River .PAXTF 
Western Branch Patuxent River .... WBRTF 
Middle Patuxent River.PAXOFI 
Lower Patuxent River .PAXMH 
Upper Potomac River .POTTF 
Anacostia River.ANATF 
Piscataway Creek .PISTF 
Mattawoman Creek.MATTF 
Middle Potomac .POTOH 
Lower Potomac .POTMH 
Upper Rappahannock River.RPPTF 
Middle Rappahannock River .RPPOH 
Lower Rappahannock River.RPPMH 
Corrotoman River.CRRMH 
Piankatank River.PIAMH 
Upper Mattaponi River.MPNTF 
Lower Mattaponi River.MPNOH 
Upper Pamunkey River .PMKTF 
Lower Pamunkey River.PMKOH 
Middle York River.YRKMH 
Lower York River.YRKPH 
Mobjack Bay.MOBPH 
Upper James River.JMSTF 
Appomattox River .APPTF 
Middle James River .JMSOH 
Chickahominy River .CHKOH 
Lower James River.JMSMH 
Mouth of the James River.JMSPH 
Western Branch Elizabeth River ... WBEMH 
Southern Branch Elizabeth River ... SBEMH 
Eastern Branch Elizabeth River .... EBEMH 
Lafayette River.LAFMH 
Mouth to mid-Elizabeth River.ELIPH 
Lynnhaven River.LYNPH 
Northeast River.NORTF 
C&D Canal .C&DOH 
Bohemia River.BOHOH 
Elk River.ELKOH 
Sassafras River.SASOH 
Upper Chester River.CHSTF 
Middle Chester River.CHSOH 
Lower Chester River.CHSMH 
Eastern Bay .EASMH 
Upper Choptank River .CHOTF 
Middle Choptank River.CHOOH 
Lower Choptank River.CHOMH1 
Mouth of the Choptank River .... CHOMH2 
Little Choptank River .LCHMH 
Honga River.HNGMH 
Fishing Bay .FSBMH 
Upper Nanticoke River.NANTF 
Middle Nanticoke River .NANOH 
Lower Nanticoke River.NANMH 
Wicomico River.WICMH 
Manokin River.MANMH 
Big Annemessex River.BIGMH 
Upper Pocomoke River.POCTF 
Middle Pocomoke River.POCOH 
Lower Pocomoke River.POCMH 
Tangier Sound .TANMH 
Source: Chesapeake Bay Program 1999. 
chapter vi • Recommended Implementation Procedures 
