however, that can be met by the Corps. These needs authorize an ongoing planning process that evaluates current project operations and prospective new water project investments. This analysis would be conducted at large spatial scales, with explicit attention to maximizing the values derived from the existing built infrastructure, as well as related water and land resources. This chapter has defined a new planning authority and a conceptual approach to planning under that authority. Chapter 5 examines and presents the requirements for executing the portfolio planning authority.