Major storm damage, including hydraulic soil erosion, ground movements, and a broken 30 inch diameter storm drain, occurred in Avalon Canyon as a result of the 1997/1998 winter storms and exceptionally high rainfall.
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The 36-inch-diameter Barker Gravity Pipeline transports raw water 11.7 miles from the Middle Boulder Creek Watershed and Barker Reservoir to Kossler Reservoir. The City of Boulder depends heavily on this pipeline for municipal water supply, and purchased the pipeline from Public Service Company of Colorado in January 2001.
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