Congress has enacted hundreds of federal laws affecting the nation's water resources and continues to address numerous water-related issues annually. From responding to natural disasters such as droughts and floods, to improving water resources and water quality infrastructures and protecting fish and wildlife, many congressional committees are involved in legislating, funding, and overseeing the water-related activities of numerous federal agencies. Nearly two centuries of such activity have resulted in a complex web of federal involvement in water resource management and use. This book provides an overview of select federal water activities with a focus on agencies, authorities, and congressional committees.