| Chapter 85.05. Diking districts. |
| Chapter 85.06. Drainage districts and miscellaneous drainage provisions. |
| Chapter 85.07. Miscellaneous diking and drainage provisions. |
| Chapter 85.08. Diking, drainage, and sewerage improvement districts. |
| Chapter 85.12. Federal aid to diking, drainage, and sewerage improvement districts. |
| Chapter 85.15. Diking, drainage, sewerage improvement districts—1967 act. |
| Chapter 85.16. Maintenance costs and levies—Improvement districts. |
| Chapter 85.18. Levy for continuous benefits—Diking districts. |
| Chapter 85.20. Reorganization of districts into improvement districts—1917 act. |
| Chapter 85.22. Reorganization of districts into improvement districts—1933 act. |
| Chapter 85.24. Diking and drainage districts in two or more counties. |
| Chapter 85.28. Private ditches and drains. |
| Chapter 85.32. Drainage district revenue act of 1961. |
| Chapter 85.36. Powers of special districts. |
| Chapter 85.38. Special district creation and operation. |