Turtle's Race with Beaver by Joseph Bruchac and James Bruchac illustrated by Jose Aruego and Ariane Dewey

After winter turtle wakes up and swims up to the top of her pond to find it transform.  A beaver has built a dam and lodge in "her" pond and an argument ensues to determine who owns the pond.  To settle argument,  they decide to race each other.
A satisfying ending!
A traditional Seneca story