- Historic Period: Roughly 300 BCE – Ancient Greece
Most of us know that hydrology is simply put, the study of water and its properties. This was quite a notable study for people in the ancient world. In fact, the ancient Greeks, Romans, and Egyptians all studied the field in a major way. The oldest written record on hydrology dates back to around 300 BCE in ancient Greece. It would go on to become a huge asset to inventions in the ancient world. This was especially important to the Greeks & Romans, who would invent the first bathhouses along with intricate systems for major cities to consistently have water when needed.