In recognition of the increasing need for soil, water, and related source data for land conservation, use, and development, for guidance of community development for a balanced rural-urban growth, for identification of prime agriculture producing areas that should be protected, and for use in protecting the quality of the environment, the Secretary of Agriculture is directed to carry out a land inventory and monitoring program to include, but not be limited to, studies and surveys of erosion and sediment damages, flood plain identification and utilization, land use changes and trends, and degradation of the environment resulting from improper use of soil, water, and related resources.