Northern Dewatering:
Precision Pumping Solutions for Every Project
Delivering Expert Dewatering and Bypass Pumping Services Across the U.S. Since 1984
Founded in 1984 by industry veteran John McShane, Northern Dewatering, Inc. has grown into one of the Midwest’s leading dewatering and bypass pumping contractors. With a commitment to integrity and customer service, the company offers a comprehensive range of services—from small wellpoint systems to complex deep well dewatering and sewer bypass pumping systems handling flows from 100 GPM to over 100 MGD. Serving the construction, mining, and municipal sectors nationwide, Northern Dewatering combines experienced personnel with a vast inventory of reliable equipment to ensure efficient and effective water control solutions for projects of all sizes.
Groundwater control or dewatering is the temporary reduction of pore pressures or groundwater levels to provide dry, stable and safe soil conditions in excavations below groundwater level. Dewatering is used to facilitate the construction of the deep excavations that are required for lift stations, tunnels and other underground structures.
Wellpoint systems are used to lower groundwater levels to provide stable working conditions in excavations. Wellpoint systems are particularly suited for shallow foundations, utility and trench work dewatering.
A wellpoint system consists of a series of closely spaced small diameter shallow wells. The wellpoints are connected to a common header pipe and are pumped with a high efficiency vacuum dewatering pump. For drawdowns in excess of 15-feet, further stages of wellpoints are required and installed at successively lower levels as excavation proceeds.
Deep well dewatering systems are used to lower groundwater levels to provide stable working conditions in excavations. A deep well system comprises of an array of drilled or jetted wells, each fitted with an electric submersible pump.
This technique is particularly suited to deeper excavations or where artesian groundwater pressures threaten base stability. The system is reliable and the wide spacing of the wells reduces access restrictions to a minimum.
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