16 U.S.C. § 460d: Recreational user fees

No entrance or admission fees shall be collected after March 31, 1970 , by any officer or employee of the United States at public recreation areas located at lakes and reservoirs under the jurisdiction of the Corps of Engineers, United States Army. Subject to paragraphs (2) and (3), the Secretary of the Army may establish and collect fees for the use of developed recreation sites and facilities, including campsites, swimming beaches, and boat launching ramps but excluding a site or facility which includes only a boat launch ramp and a courtesy dock. The Secretary shall not establish or collect fees under this subsection for the use or provision of drinking water, wayside exhibits, roads, scenic drives, overlook sites, picnic tables, toilet facilities, surface water areas, undeveloped or lightly developed shoreland, or general visitor information. The fee under this subsection for use of a site or facility (other than an overnight camping site or facility or any other site or facility at which a fee is charged for use of the site or facility as of August 10, 1993 ) for persons entering the site or facility by private, noncommercial vehicle transporting not more than 8 persons (including the driver) shall not exceed $3 per day per vehicle, which amount may be adjusted annually by the Secretary for changes in the Consumer Price Index of All Urban Consumers published by the Bureau of Labor Statistics of the Department of Labor. The fees collected under this subsection shall be credited to the currently applicable appropriation, account, or fund of the Department of the Army as discretionary offsetting collections, and shall be available only to the extent provided in advance in appropriations Acts, for the operation and maintenance of recreation sites and facilities under the jurisdiction of the Secretary, subject to the condition that not less than 80 percent of fees collected at recreation areas of a specific water resources development project shall be used at such project. The Secretary shall evaluate the feasibility of implementing an alternative to the $25 annual pass that the Secretary currently offers to users of recreation facilities at water resources projects of the Corps of Engineers. The evaluation under paragraph (1) shall include the establishment on a test basis of an annual pass that costs $10 or less for the use of recreation facilities, including facilities at Raystown Lake, Pennsylvania. Not later than December 31, 1999 , the Secretary shall transmit to Congress a report on the results of the evaluation carried out under this subsection, together with recommendations concerning whether annual passes for individual projects should be offered on a nationwide basis. The authority to establish an annual pass under paragraph (2) shall expire on the [sic] December 31, 2003 .”