- 80% of the earth's surface is water.
- The oceans contain enough salt to cover all the continents with a layer 500 feet thick.
- Ogallala or High Plains aquifer, in the western United States, is one of the world's largest aquifers.
- Wetlands provide valuable environmental functions. They keep water clean by filtering out sediment, cushion coasts from storms and floods, and provide breeding grounds for birds, fish, and mammals.
- Of the earth's surface water, 97% is salt water; 2% is polar ice caps and glaciers; 1% is available for drinking water.
- A watershed or river basin is the area of land from which rainfall drains to a single point.
- Water is the only substance on earth found naturally in three forms: liquid, solid and gas.
- Water usage in the United States has increased ten-fold since 1940.
- The Clean Water Act, the cornerstone of surface water protection, became law in 1972.
- The average American uses about 150 gallons of water a day.
- A "meander" is a curve or bend in a river.
- The annual average precipitation in the continental United States is 30 inches. In Winston-Salem, the average, annual rainfall is 42.5 inches.
- One gallon of water weighs 8.34 pounds.
- Edmond Halley (of Halley's Comet fame) was the first scientist to identify the water cycle.
- There are 17 river basins in North Carolina. Winston-Salem is located in the Yadkin-PeeDee River Basin.
- The City of Winston-Salem has 15 sub-watersheds: Muddy Creek, Lower South Fork of Muddy Creek; Upper Mill Creek, Middle Mill Creek, Lower Mill Creek, Fiddlers Creek, Brushy Fork Creek, Upper Salem Creek, Middle Salem Creek, Lower Salem Creek, Little Creek Peters Creek, Upper Silas Creek, Lower Silas Creek, and Salem Lake.
- Clean water is everyone's responsibility.
Thank you to the Groundwater Foundation for some of the above statistics. For more information about groundwater, please visit: www.groundwater.org