Allen Dart

Before AD 1500, Native American cultures took advantage of southern Arizona’s long growing season and tackled its challenge of limited precipitation by developing the earliest and most extensive irrigation works in all of North America. Agriculture was introduced to Arizona more than 4,000 years before present, and irrigation systems were developed in our state at […]

Before AD 1500, Native American cultures took advantage of southern Arizona’s long growing season and tackled its challenge of limited precipitation by developing the earliest and most extensive irrigation works in all of North America. Agriculture was introduced to Arizona more than 4,000 years before present, and irrigation systems were developed in our state at […]