A flash flood watch is in effect for much of the peninsula after the heavy rainfall over the weekend.
In Maryland it stretches from inland Worcester, Somerset and Wicomico Counties to the Maryland beaches.
In Delaware the beach resorts are also looking at a flash flood warning.
The Salisbury Daily Times reports that on Saturday afternoon Ocean City was hit with so much rain that Coastal Highway north of 94th street was closed due to flooding.
Meanwhile, Delaware highway authorities issued an advisory for Route 54 in Fenwick Island with cars turned back on Route 1 who tried to enter Ocean City from the north.