 The effects of the hurricane in Delaware were compounded by flooding caused by the remnants of Tropical Storm Henri days before . Moderate winds of up to 62 mph ( 100 km / h ) in Lewes downed numerous trees , tree limbs , and power lines across the state , leaving at least 15 @,@ 300 without power . Numerous low @-@ lying areas were flooded due to high surf , strong storm surge , or run @-@ off from flooding further inland . The passage of Hurricane Isabel resulted in $ 40 million in damage ( 2003 USD , $ 51 @.@ 5 million 2016 USD ) and no casualties in the state . 
