Things to Know about Dewatering Dewatering is extremely vital when constructing buildings, powerhouse and dams. Having firm and sound working conditions is indispensable. These structures not only require a dry base for their foundations but also a good water-table-stability in the girth. Although dewatering can be done by techniques such as gravity flow and electro-osmosis, the use of dewatering pumps is the most convenient, efficient and fastest in yielding satisfactory results.
To avoid further disruption of the environment such as soil eroding, it is imperative that the dewatering process is done properly. It is also important to select the best location for the discharge line, even when you might be a long distance from any bodies of water. When choosing discharge areas for your dewatering, keep in mind:
Water should never be pumped directly into slopes which can cause erosion or leave a potential for landslides.
It is important to look for signs of erosion in the area and discontinue dewatering if any is found.
If possible, water should be channeled into wooded or heavily vegetated areas.
Avoid dewatering during heavy rains because the infiltration rate is so low that water will move very slowly, basically stopping the entire operation.
Never discharge water contaminated with grease, oil, or caustic chemicals directly into the ground to prevent contaminating the local environment.
Additional permits may be needed from local, state, or federal governments.