43 U.S.C. § 3208 — Federal assistance for groundwater recharge, aquifer storage, and water source substitution projects

The Secretary, at the request of and in coordination with affected Indian Tribes, States (including subdivisions and departments of a State), or a public agency organized pursuant to State law, may provide technical or financial assistance for, participate in, and enter into agreements (including agreements with irrigation entities) for—

Nothing in this section authorizes additional technical or financial assistance for, or participation in an agreement for, a surface water storage facility to be constructed or expanded.

A construction project shall only be eligible for financial assistance under this section if the project meets the conditions for funding under section 3202(a)(2)(C)(ii) of this title.

Cost sharing for a project funded under this section shall be in accordance with section 3202(b) of this title.

In providing funding for a project under this section, the Secretary shall comply with all applicable environmental laws, including —

A project with a total estimated cost of $500,000,000 or more shall only be eligible for construction funding under this section if the project is authorized for construction by an Act of Congress.