4 THE FLOOD OF 1 843. 



county in Pennsylvania, except Philadelphia. It is bounded 

 by Philadel])hia county on the east ; l)y Montgomery on the 

 north-east : on the north-west by Chester county, and on the 

 south by the state of Delaware and Delaware river. It con- 

 tains about 177 square miles. 



The county is principally drained by five large creeks, 

 four of which, viz. : Chester, Ridley, Crum and Darby creeks, 

 are mill streams, before they enter the county. These streams 

 have a general course, a little east of south, and after travers- 

 ing the whole breadth of the county, empty into the Delaware. 

 The only material variation from this general course is in 

 Darby creek, after it reaches the head of tide : from which 

 point it has a southerly and southwesterly meandering course 

 of about nine miles before it reaches the Delaware. 



Cobb's creek rises in the township of Haverford, and after 

 crossing the southern border of that township, it forms the 

 boundary line between this county and Philadelphia to the 

 point where it empties into Darby creek, a short distance 

 below the head of tide water. 



The nrandyn'i)ie forms a part of the western boundary of 

 the county. 



Chester creek enters the county by two principal branches 

 designated "East" and "West." These are both good mill 

 streams, and after their junction at Crozerville, form the larg- 

 est of the creeks above named, except the Brandywine. This 

 creek unites its water with the Delaware river, at the borough 

 of Chester. 



Darby creek, the next in point of size, also has its origin 

 in two principal branches, which may be distinguished by the 

 terras "I^ast" and "West." These branches unite at the 

 flour mill of Levi Lewis, in Radnor township, and after the 

 united stream has received Ithen creek, it reaches the head 

 of tide, at the village of Darby. Cr74m and Ridley creeks 

 are each large streams before they enter Delaware county. 

 They pursue the same general course, and scarcely at a dis- 

 tance of more than two miles from each other. At (Mie point 



