An irrigation system is an arrangement of canals and conduits that bring water to crops that need it. Even the earliest civilizations found ways to irrigate their crops with water from nearby rivers. In time, simple canals gave way to more advanced technology, leading to today's massive irrigation systems. In this book, readers will explore essential STEM topics while learning the fascinating history behind irrigation systems, including their different parts, how they are used, and the amazing engineers and scientists who make them possible. The text was designed to reflect social studies and science curricula. Photographs, diagrams, and fact boxes are sure to capture the attention of even reluctant readers.