Complex sentence: One of the many tools they have helped to create is the Tools of Watershed Protection in Developing Areas which is an approach that uses eight tools that can be used to protect or restore water resources in an urbanized or developing watershed.
Split into simpler sentences: One of the many tools they have helped to create is the Tools of Watershed Protection in Developing Areas. This program is an approach that uses eight tools that can be used to protect or restore water resources in an urbanized or developing watershed.