What is a potentiometric map?

What is a potentiometric map?

A potentiometric surface map is a contour map that. represents the top of the ground water surface in an. aquifer. The contour lines illustrate the potentiometric. surface much like the contour lines of a topographic.

How do you make a potentiometric surface map?

The maps are created by plotting elevations of the static water level and then generating contours or lines of equal elevation. Static water levels used to develop the potentiometric surface map are from wells completed at various depths and under confined and unconfined conditions.

What does it mean if the potentiometric surface does not reach above the ground surface?

What does it mean if the potentiometric surface does NOT reach above the ground surface? The aquifer does not have any recharge into it and thus is dry. There will never be any artesian wells or springs associated with the aquifer. It will not be possible to pull water out of the aquifer from any type of well.

Are contour lines drawn on maps?

Contour lines are lines drawn on a topographic map connecting points of equal elevation. They are also called “level- lines”.

What is an unconfined aquifer?

A water-table–or unconfined–aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall. Aquifers and Groundwater. Aquifer Basics.

Which electrode is used in potentiometer?

Reference electrodes generally used are hydrogen electrodes, calomel electrodes, and silver chloride electrodes. The indicator electrode forms an electrochemical half cell with the interested ions in the test solution. The reference electrode forms the other half cell.

Is water table the same as potentiometric surface?

An unconfined aquifer is also referred to as a water table aquifer. The potentiometric surface is the level to which water will rise in tightly cased wells. A water table map shows the spatial distribution of water levels in wells in an unconfined aquifer, and is a type of potentiometric surface map.

What is potentiometric surface mapping?

The potentiometric surface maps produced, under the Potentiometric Surface Mapping (1:48,000) project, depicts the elevation to which water levels will rise in wells. The maps are created by plotting elevations of the static water level and then generating contours or lines of equal elevation.

What is the expected flow path of the potentiometric surface?

The expected flow path is downslope or perpendicular to the potentiometric surface contours (Figure 2). The maps compiled through the Potentiometric Surface Mapping (1:48,000) project show generalized composites of the potentiometric surface and are not intended to be a substitute for local site-specific conditions.

What is a potentiometric profile?

Construction of a potentiometric profile allows insight into regional patterns of groundwater flow, identification of recharge and discharge areas, the roles of rivers and lakes, and the effects of pumping wells. Like potentiometric surface maps, potentiometric profiles consist of a series of contour lines of equal hydraulic heads.

What is the difference between static and potentiometric water levels?

The static water level is the level of water in a water well that is not influenced by pumping. The potentiometric surface is the level to which water will rise in tightly cased wells. A water table map shows the spatial distribution of water levels in wells in an unconfined aquifer, and is a type of potentiometric surface map.