  In this paper, we consider the chemotaxis-shallow water system in
$\mathbb{R}^2$. We establish the local existence of classical solution without
assuming the initial height is small or has a small perturbation near a
constant. The far field behavior of the height is a constant which could be
either vacuum or non-vacuum. The initial data is allowed vacuum and the spatial
measure of the set of vacuum can be arbitrarily large.
