; and (2) a land management plan prepared by the Forest Service for a unit of the National Forest Service pursuant to section 6 of the Forest and Rangeland Renewable Resources Planning Act of 1974 ( 16 U.S.C. 1604 ). (b) Inventory and assessments (1) In general The Secretaries shall— (A) conduct a single inventory and assessment of recreation resources for Federal recreational lands and waters; and (B) publish the inventory and assessment conducted under subparagraph (A) for public comment. (2) Unique recreation values An inventory and assessment conducted under paragraph (1) shall recognize— (A) any unique recreation values and recreation opportunities; and (B) areas of concentrated recreational use. (3) Inventory The inventory conducted under paragraph (1) shall— (A) identify, list, and map recreation resources by— (i) type of recreation opportunity and type of natural or artificial recreation infrastructure; (ii) to the extent available, the level of use of the recreation resource as of the date of the inventory; and (iii) location; and (B) identify, to the extent practicable, any trend relating to recreation opportunities or use at a recreation resource identified under subparagraph (A). (4) Assessments For any recreation resource inventoried under paragraph (1), the Secretary concerned shall assess— (A) the level of demand for the recreation resource; (B) the maintenance needs of, and expenses necessary to administer, the recreation resource; (C) the benefits of current and projected future recreation use, including to the local economy; (D) the capacity of the recreation resource to meet the demand described in subparagraph (A), including the relationship of current and projected future recreation use on— (i) natural, cultural, and other resources; (ii) other authorized uses and activities on the Federal recreational lands and waters subject to the applicable land use plan; and (iii) existing infrastructure; (E) the suitability for developing, expanding, or enhancing the recreation resource