Sand and other deposits having no commercial value may be taken from Corpus Christi and Nueces bays for filling and raising the grade of the salt flats in the northern part of the city of Corpus Christi and the lowlands lying north of the north boundary line of the city of Corpus Christi, in Nueces County, and south of the south boundary line of the city of Portland, in San Patricio County, without making payments for it to the commission.
Tex. Parks and Wild. § 86.015