Department of Mathematics;
University of Rajshahi;
Rajshahi-6205;
Bangladesh;
School of Mathematical Sciences;
Universiti Sains Malaysia;
Pulau Pinang-11800;
Malaysia;
Mathematics Discipline;
Science;
Engineering&Technology School;
Khulna University;
Khulna-9208.Bangladesh;
method of lines; RKAHeM(4; 4)technique; error estimation; storm surge; nested grid;