hey thats cool
My family's from Bolivia and I go there almost every year.
There are barely any place to ride.
In the city of Cochabamba, there is this one lake.
In La Paz, there is this lake called Lago Titicaca, but it probably is deep.
Near Potosi, on your way to the Sal de Uyuni, the largest salt desert in the world, there you will find stunning lakes inhabitated by flamingos.
There are random lakes as you pass by the altiplano as well.(Near La Paz.)
Tell me where exactly you will be stationed.
Hope this helps