Tex. Water Code § 63.152 : WATER CODE — GENERAL LAW DISTRICTS — SELF-LIQUIDATING NAVIGATION DISTRICTS — POWERS AND DUTIES — Purposes of District TEXT PDF The district may make improvements for: (1) the navigation of inland and coastal water; (2) the preservation and conservation of inland and coastal water for navigation; (3) the control and distribution of storm water and floodwater of rivers and streams in aid of navigation; or (4) any purpose stated in Article XVI, Section 59, of the Texas Constitution, necessary or incidental to the navigation of inland and coastal water. Tex. Water Code § 63.152 Acts 1971, 62nd Leg., p. 110, ch. 58, Sec. 1, eff. 8/30/1971.