Artesian Well EarthCache EarthCache
Hidden : 3/15/2005
Difficulty:
1 out of 5
Terrain:
2 out of 5

Size: Size: not chosen (not chosen)

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Geocache Description:

A nice 1 1/2 mile, round trip walk on a utility road thru a wetland to a nice area with an artesian well.

An artesian aquifer is a confined aquifer containing groundwater that will flow upwards out of a well without the need for pumping.

In recharging aquifers, this happens because the water table at its recharge zone is at a higher elevation than the head of the well.



Technical data...

Pascal's law predicts the theoretical hydrostatic pressure P:



where p (rho) is the density of the fluid, g the acceleration due to gravity, and z is the elevation. In practical terms the pressure is expressed as metres water column (zr - zw).

"Fossil water" aquifers can also be artesian if they are under sufficient pressure from the surrounding rocks. This is similar to how many newly tapped oil wells are pressurized.

Thanks to Wikipedia for the information.

Bring along a short length of garden hose and a gallon bottle and measure the time it takes to fill the bottle (gallons per minute). This will give you an idea about the flow of this well.

Email me the answer.

Thanks to TrailRun for bringing us all to this place with his cache A Place to Chill.

Additional Hints (Decrypt)

Unir sha!

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)


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