(a) The department may:
(1) fix entrance fees for admission to the park;
(2) fix charges to be collected from patrons of the park;
(3) execute grazing leases covering all or part of the park land;
(4) grant concessions in the park;
(5) make improvements in the park; and
(6) execute any other contracts necessary to carry out the provisions of this subchapter.
(b) Improvements may include the construction of dams to impound water to form a lake or lakes for recreational and other conservation purposes within the park. Before constructing any dam or lake, the commission must obtain permits required by law from the Texas Water Rights Commission.