In recent years, some reports prepared by advocacy groups have raised issues concerning the adequacy of the the National Park Service's (NPS) financial resources needed to effectively operate the park units. This report identifies: (1) funding trends for NPS operations & visitor fees for FY2001-2005; (2) specific funding trends for 12 selected high visitation park units & how, if at all, the funding trends have affected operations; & (3) recent management initiatives the NPS has undertaken to address fiscal performance & accountability of park units. The report recommends that the Dept. of the Interior allow park units to use visitor fee revenues to pay the costs of permanent employees administering projects funded by visitor fees. Illustrations.