All over Florida you see these ponds as buffers for holding rainwater, but they also are constructed to help drain the land, making it more suitable for buildings and roads. That does not mean that developers and engineers can randomly decide to create these pools without restriction. I know that county and state governments have strict rules about such things.
For example, in the community where I live, a section of protected wetland needed to be filled to connect a road. To compensate for the loss it was determined that a new wetland needed to be constructed in an adjacent area. Wildlife depends on the diversity of land for survival. These rules are in place to protect the essential character of the region.