When it comes to water management projects, to judge whether or not a project is appropriate you must have maps, aerial photos, blueprints of the work to be done, a budget, a clear definition of who or what is to be protected, and the like.
以整治工程為例，若沒有充足的資訊如地圖、空照圖、災區現場照片、工程設計圖、預算、保護對象等，很難判斷是否為生態敏感地區或工程規劃設計恰當與否。