Respuesta :

Water management projects created huge reservoirs and lakes where there had been dry canyons.

The National Reclamation Act of 1902 or the "New Lands Act" allowed the government to apply federal funds to irrigation projects intended to transform arid areas into land that could be farmed. However these projects had bring unintended economic and environmental adversities. Among the environment damages are the use of water that affected almost every river in the United States with the exception of the Yellowstone reserve.