| 590r to 590x–4. | Repealed. | |
| 590y. | Authorization and purpose of investigation, construction, and maintenance of projects; title to projects; limitation on costs. | |
| 590z. | Utilization of services, materials, funds, etc., of Federal, State, or municipal agencies, or of individuals. | |
| 590z–1. | Prerequisites for construction of project. | |
| 590z–2. | Repayment contracts. | |
| 590z–3. | Settlement of projects on agricultural basis. | |
| 590z–4. | Cooperative agreements with other agencies. | |
| 590z–5. | Repealed. | |
| 590z–6. | Disposition of receipts from repayment contracts and project operations. | |
| 590z–7. | Provisions for furnishing surplus power and municipal or miscellaneous water supplies. | |
| 590z–8. | Authority of Secretary of the Interior over lands, contracts, water rights, etc. | |
| 590z–9. | Powers and duties of Secretaries of the Interior and Agriculture; rules and regulations. | |
| 590z–10. | Authorization of appropriations. | |
| 590z–11. | Delegation of powers and duties by Secretary of the Interior. | |
