Title 31 - NATURAL RESOURCES AND CONSERVATION
- Part 1 - GENERAL LAND OFFICE (§§ 1.11 — 30.60)
- Part 2 - TEXAS PARKS AND WILDLIFE DEPARTMENT (§§ 51.2 — 69.408)
- Part 4 - SCHOOL LAND BOARD (§§ 151.1 — 155.49)
- Part 5 - BOARDS FOR LEASE OF STATE-OWNED LANDS (§§ 201.1 — 201.7)
- Part 9 - ON-SITE WASTEWATER TREATMENT RESEARCH COUNCIL (§§ 286.1 — 286.98)
- Part 10 - TEXAS WATER DEVELOPMENT BOARD (§§ 353.2 — 380.63)
- Part 16 - COASTAL COORDINATION ADVISORY COMMITTEE (§§ 501.1 — 506.54)
- Part 17 - TEXAS STATE SOIL AND WATER CONSERVATION BOARD (§§ 517.1 — 530.7)
- Part 18 - TEXAS GROUNDWATER PROTECTION COMMITTEE (§§ 601.1 — 601.10)
- Part 19 - TEXAS ALTERNATIVE FUELS COUNCIL (§§ 655.1 — 655.110)
- Part 21 - TEXAS LOW-LEVEL RADIOACTIVE WASTE DISPOSAL COMPACT COMMISSION (§§ 675.1 — 675.25)