_id	field	description	notes
1	OBJECTID	unique id for geographic feature	
2	CSO_SHED	Sewershed id	O - is for Ohio, A- is for Allegheny, M - is for Monongehela 
3	MOD_BASIN	Basins defined by ALCOSAN for planning purposes	
4	CITYOFPGH	Within the City of Pittsburgh boundary	
5	PRIORITYSS	priority sewershed 	PWSA priority for stormwater management to reduce combined sewer overflows
6	PHASE_EVAL	Phase the sewershed was evaluated in	Phase 1 took place in 2016, Phase 2 was completed in 2017
7	Shape_Leng	length of geographic feature	used internally by GIS software
8	Shape_Area	area of geographic feature	used by GIS software