Complex sentence: Poor water management patterns lead to arroyo cutting; deforestation was extensive and economically devastating: timber for construction was imported from outlying mountain ranges, such as the Chuska Mountains over to the west.
Split into simpler sentences: Poor water management patterns lead to arroyo cutting; deforestation was extensive and economically devastating. For instance, timber for construction was imported from outlying mountain ranges, such as the Chuska Mountains over to the west.