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Resident details landslide, groundwater concerns tied to nearby development
Summary
Resident Thane Corbridge told the Preston City Council that groundwater beneath his property has been unusually high for years, that a 30-by-30-foot landslide occurred in September 2023, and that nearby subdivision drainage and irrigation changes may be contributing to ongoing erosion and groundwater problems.
Preston resident Thane Corbridge addressed the City Council during the public-comment portion of the meeting to raise long-running concerns about groundwater, stormwater infrastructure and a 30-by-30-foot landslide that he says occurred in September 2023 along the east edge of his property.
Corbridge said his family has lived on the site for decades and that groundwater in the area has historically been high. He told the council he had taken measurements and drilled monitoring holes following the 2023 slide; he reported finding groundwater as much as 44 inches below the surface in one hole the following spring. Corbridge said pressure irrigation, removal of open canals, and new subdivision drainage had changed how water moves across the plateau and that groundwater appears to be channeling in unexpected ways.
Corbridge said he had…
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