33 U.S. Code § 2262 - Survey of potential for use of certain facilities as hydroelectric facilities
(a) Survey authority
The Secretary shall, upon the request of local public officials, survey the potential and methods for rehabilitating former industrial sites, millraces, and similar types of facilities already constructed for use as hydroelectric facilities. The Secretary shall, upon request, provide technical assistance to local public agencies, including electric cooperatives, in designing projects to rehabilitate sites that have been surveyed, or are qualified for such survey, under this section. The non-Federal share of the cost of carrying out this section shall be 50 percent.