Jimmerson Lake Artesian Well EarthCache
Hidden : 2/16/2011
Difficulty:
1 out of 5
Terrain:
1 out of 5

Size: Size: other (other)

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Geocache Description:




Maybe you've heard advertisements by water companies wanting to sell you "artesian-well drinking water." Is this water different from other bottled water taken from springs?

The water may not be different, but it comes to the earth's surface a bit differently. Groundwater in aquifers between layers of poorly permeable rock, such as clay or shale, may be confined under pressure. If such a confined aquifer is tapped by a well, water will rise above the top of the aquifer and may even flow from the well onto the land surface. Water confined in this way is said to be under artesian pressure, and the aquifer is called an artesian aquifer. The word artesian comes from the town of Artois in France, the old Roman city of Artesium, where the best known flowing artesian wells were drilled in the Middle Ages. The level to which water will rise in tightly cased wells in artesian aquifers is called the potentiometric surface.

Deep wells drilled into rock to intersect the water table and reaching far below it are often called artesian wells in ordinary conversation, but this is not necessarily a correct use of the term. Such deep wells may be just like ordinary, shallower wells; great depth alone does not automatically make them artesian wells. The word artesian, properly used, refers to situations where the water is confined under pressure below layers of relatively impermeable rock.


The water from this well is flowing out of the Howe Outwash Aquifer System.

The Howe Outwash Aquifer System is located primarily in northwestern Steuben County. The prevailing character of this aquifer system is moderately thick near surface sand and gravel deposits that overlie an altered till plain. The near surface outwash deposits are the most extensive granular deposits in this system and vary from 15 to 135 feet in thickness. Within the underlying till sequence, clay zones alternate with sand and gravel layers. These sand and gravel layers average 5 to 25 feet in thickness, although some localized lenses reach thicknesses of 100 feet. Two or more sand and gravel deposits often occur at depth within the till sequence, but are only continuous locally. This is an area with good to excellent ground-water availability (100 to 1200 gpm). The surficial deposits are highly susceptible to contamination and the deeper sand and gravels are moderately so.


To successfully log this Earthcache as a find, you must email cache owner with the answer to the following four questions:

1. Measure the flow rate of the well in gallons per minute.

2. Estimate the square footage of the pool that water is flowing into.

3. The water is staining the pool a distinct color. What color is it?

4. What is the name of the aquifer that supplies the water for this well.

5. --OPTIONAL--Include a photo of yourself AND/OR your GPS at the well. Be sure to not include any spoilers in the photo.


CONGRATS TO TeamMina FOR THE FTF!!!!!!!

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