Take a fascinating journey underground, right in the classroom. The Ground Water Flow Model is used to demonstrate key concepts about the physics and contamination of water as it moves under Earth's surface. Used extensively by earth science educators, soil and water conservation districts, university professors and natural resource educators, it’s simple to operate and guaranteed to increase students’ understanding of groundwater.

The model demonstrates the movement of ground water through two types of aquifers: an unconfined aquifer of white sand and a confined aquifer of gravel located near the bottom, separated by a semi-impervious clay/sand layer. All models include integrated infiltration zone, pumping wells, observation wells, pond, and river profile and leaky underground storage tank. The model is constructed of clear plexiglass and is 24-inches long, 12-inches high and 1-inch thick. Fully portable and easy to clean, all models are handmade in Bozeman, Montana.

Ground Water Concepts: A surprising number of physical and chemical ground water concepts can be demonstrated with the model. A manual accompanying the model describes 28 concepts that a teacher can demonstrate, including:
• Ground water systems 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.
• Human activities at or near the surface of the land can significantly contaminate ground water.
• Artesian (naturally flowing) wells are the result of aquifers under pressure.
• Types of rock material in an aquifer affect the rate of flow. (Water flows through coarse gravel much easier than through fine sand.)
• Ground water is recharged by precipitation and snowmelt.

Includes: Instructional video and manual, vaccum pump, tubing, flask, rubber stoppers, water containers, squirt bottles, and plastic storage tub. Contains everything needed.