In recent years, the concept of "mitigation banking" has emerged. Rather than require developers to create and maintain wetlands on their own on a quid pro quo basis, mitigation banking allows them to pay for wetlands that have been created and maintained properly by others to compensate for their damage.

The contributors to this volume provide an overview of mitigation banking experience in the United States, examine the key issues and concerns, and describe the practice of developing and operating a mitigation bank.