Why the Northwest Shops BiâMart? We've been a part of the Northwest for over 60 years. That's a long time, but then, saving money never really gets old, does it? Our members shop at Bi-Mart because our stores are convenient, easy to shop and offer real values every day on name brand products.
A well is the most common way to obtain groundwater for household use. A well is basically a hole in the ground, held open by a pipe (or casing) that extends to an aquifer. A pump draws water from the aquifer for distribution through the plumbing system.
How Dams Work. A typical dam is a wall of solid material built across a river to block the flow of the river thus storing water in the lake that will form upstream of the dam as water continues to flow from the river upstream of the dam.The main purpose of most dams is to create a permanent reservoir of water for use at a later time.s well as being watertight a dam must also be stable ie the dam wall must have sufficient strength to firstly, stand permanently under its own weight especially when at least part of the dam wall is saturated with water and secondly, resist the water pressure in the lake upstream of the dam.