Waterwise Wednesday: Rain Harvesting Romans

Image may contain: sky, grass, plant, cloud, mountain, outdoor and natureRecent research suggests rain harvesting may have provided the 800 Roman soliders manning Hadrian’s Fort with 10 liters (2.62 gallons) of drinking water per per capita per day during their deployment.

Evidence at Hadrian’s Fort, a strategic Roman outpost along Hadrian’s Wall in northern England, indicates building rooftops were constructed to capture rainfall. The runoff collected in stone-lined tanks, two to six tanks per key building, capable of holding 2 cubic meters (about 528 gallons) of water each.

It’s an amazing feat of foresight, considering Hadrian’s Fort has no internal springs or wells, access to springs or waterways in the region, and an aqueduct supply would have been extremely impractical.

Photo by David Ross
Hadrian’s Wall at Steel Rigg
Twice Brewed, Northumberland, England

Rain Barrels

What are they?

A rain barrel is any above ground container modified to receive, store, and distribute rooftop runoff for non-drinking uses. The typical size of a rain barrel is 55 gallons. The main components of a rain barrel are a connection to the downspout, a filter to prevent mosquitoes from entering, a faucet to allow for regulated usage, and an overflow pipe to divert the excess water. Continue reading Rain Barrels