43 USC § 509b - Additional project benefits through the construction of new or supplementary works

---
identifier: "/us/usc/t43/s509b"
source: "usc"
legal_status: "official_prima_facie"
title: "43 USC § 509b - Additional project benefits through the construction of new or supplementary works"
title_number: 43
title_name: "PUBLIC LANDS"
section_number: "509b"
section_name: "Additional project benefits through the construction of new or supplementary works"
chapter_number: 12
chapter_name: "RECLAMATION AND IRRIGATION OF LANDS BY FEDERAL GOVERNMENT"
subchapter_number: "XI–A"
subchapter_name: "RECLAMATION SAFETY OF DAMS"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
source_credit: "(Pub. L. 95–578, § 5B, as added Pub. L. 114–113, div. D, title II, § 203(2), Dec. 18, 2015, 129 Stat. 2406.)"
---


# § 509b. Additional project benefits through the construction of new or supplementary works

section 507 of this titlesection 506 of this titleJune 17, 190243 U.S.C. 371

Notwithstanding , if the Secretary, in her judgment, determines that additional project benefits, including but not limited to additional conservation storage capacity, are necessary and in the interests of the United States and the project and are feasible and not inconsistent with the purposes of this subchapter, the Secretary is authorized to develop additional project benefits through the construction of new or supplementary works on a project in conjunction with the Secretary’s activities under  and subject to the conditions described in the feasibility study, provided a cost share agreement related to the additional project benefits is reached among non-Federal and Federal funding participants and the costs associated with developing the additional project benefits are allocated exclusively among beneficiaries of the additional project benefits and repaid consistent with all provisions of Federal Reclamation law (the Act of ,  et seq.) and acts supplemental to and amendatory of that Act.

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**Source Credit**: (Pub. L. 95–578, § 5B, as added Pub. L. 114–113, div. D, title II, § 203(2), Dec. 18, 2015, 129 Stat. 2406.)

## Editorial Notes

### References in Text

Act of , referred to in text, is , , popularly known as the Reclamation Act, which is classified generally to this chapter. For complete classification of this Act to the Code, see Short Title note set out under  and Tables.