P e n n Other s Atlantic Ocean y Watersheds l Delaware v Watersheds a River Basin n i a NORTH r COVENTRY Chesapeake Chester y of Delaware Rivee Bay Basin s County r e J e w Pigeon Creek Pennsylvania N Maryland Schuylkill River Chester County EAST SOUTH COVENTRY Drainages COVENTRY Del Maryla SPRING CITY y Delaware WARWICK awar Bay nd Conestoga Stony e EAST ELVERSON sapeake Ba Atlantic Creek VINCENT Run Che Ocean French Creek PHOENIXVILLE Chesapeake Delaware WEST Bay Basin River Basin VINCENT EAST PIKELAND WEST EAST NANTMEAL NANTMEAL SCHUYLKILL WALLACE HONEY Pickering Creek BROOK UPPER Crow Creek BOROUGH UWCHLAN WEST HONEY BROOK PIKELAND CHARLESTOWN Trout TREDYFFRIN Creek Valley Creek UWCHLAN EAST BRANDYWINE EAST Pequea Creek WEST WHITELAND BRANDYWINE Brandywine Creek MALVERN Darby East Branch WEST Gulph Creek WHITELAND Crum Creek WEST EAST CALN CALN Creek EASTTOWN DOWNINGTOWN EAST CALN GOSHEN WILLISTOWN VALLEY WEST GOSHEN Ridley COATESVILLE SADSBURY VALLEY EAST Creek WEST SOUTH BRADFORD SADSBURY COATESVILLE WEST BRADFORD WEST MODENA Chester PARKESBURG Brandywine Creek CHESTER ATGLEN Creek West Branch EAST FALLOWFIELD WESTTOWN WEST POCOPSON FALLOWFIELD HIGHLAND NEWLIN THORNBURY BIRMINGHAM WEST CHESAPEAKE BAY BASIN DELAWARE BAY BASIN MARLBOROUGH Brandywine Creek Chesapeake Bay Tributaries Schuylkill River Tributaries Octoraro Main Stem Big Elk Creek Crow Creek EAST LONDONDERRY Little Elk Creek French Creek Creek MARLBOROUGH PENNSBURY Red Northeast Creek Gulph Creek Pickering Creek LONDON Clay Susquehanna River Tributaries Pigeon Creek GROVE UPPER Conestoga Creek Schuylkill River Drainages OXFORD White Creek KENNETT KENNETT Octoraro Creek Stony Run Clay SQUARE Pequea Creek Trout Creek AVONDALE LOWER PENN Creek Valley Creek OXFORD WEST NEW Big GROVE GARDEN Delaware River Tributaries Elk Municipal Boundary Chester Creek Watershed Boundary Crum Creek Creek Streams Darby Creek OXFORD NEW Ridley Creek EAST NOTTINGHAM LONDON 012345 Miles Christina River Tributaries Little FRANKLIN Brandywine Creek, East Branch LONDON Brandywine Creek, Main Stem Elk BRITAIN Chester County Board of Commissioners Brandywine Creek, West Branch Northeast Creek Chester County Planning Commission WEST NOTTINGHAM ELK Chester County Water Resources Authority Christina River Creek August 2006 Red Clay Creek White Clay Creek Christina River.