Ground Water Concepts
Several physical and chemical ground water concepts can be demonstrated with the ground water model. The accompanying manual describes 28 concepts that can be shown on the model. The following a a few of those concepts:

• Ground water aquifers vary in size, ability to produce water, depth, rock material, water quality, and other characteristics.
• Ground water is related to atmospheric and surface water through the hydrologic cycle.
• Artesian (naturally flowing) wells are the result of aquifers under pressure.
• The types of material (sand, gravel, clay, rock) in an aquifer affect the rate of flow of ground water. (Water flows through gravel much easier than through fine sand.)
• Human activities at or near the land's surface can contaminate ground water.
• Ground water is recharged by precipitation.

For special models, unique designs, or bid orders, please contact Wayne Woldt, (402) 472-8656, for more information.

For repairs or inquiries about order status, please contact Scott Minchow, (402) 472-3916, for more information.

To order a model, or parts and repairs, open and print one of the forms listed below. Please send or FAX (402-472-6338) the order to us.
The free Acrobat Reader is required.

• Ground Water Model Order
  
• Parts and Repairs Order