Slant wells

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A watershed-related issue examined by the ENVS 560/L Watershed Systems class at CSUMB.

Slant wells, also referred to as angle wells, are connected to drill rigs and are drilled at an angle that enables the extraction of seawater from the shore. Many permitting agencies consider them to be more environmentally friendly than open ocean intakes. The downside of slant wells is that they can be complicated to build and maintain. Currently their potential usage for desalinations plants are being investigated on the field [1]. Slant wells are currently being tested by CalAm for the Monterey Peninsula Water Supply Project (MPWSP) that intends to meet growing water demands in the Monterey Pensinsula by using a desalination plant.

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Figure 1. Slant well configuration.

Groundwater Impacts

The slant well purposed for MPWSP would draw water from the Dunes Sand Aquifer and underlying 180-FTE Aquifer at depths ranging from 30 ft to 200 ft below mean sea level.


  1. File:Missmer et al. 2013.pdf


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