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Programs & Activities
of the Interior
Project # 417 / 1090
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Tualatin River Basin Storage and Flow DiagramHenry Hagg Lake
Weather Conditions (NOAA)
Tualatin River near Dilley, Oregon (USGS)
Streamflow Forecast Map
Spring and Summer (NRCS)
Columbia River Snowpack SummaryMountain Snowpack Maps for Columbia Basin
Palmer Drought Index MapExplanation of Palmer Drought Severity Index (Text)
Scoggins Creek below Henry Hagg Lake near Gaston, Oregon (USGS)
Patton Valley: Buried gravity-fed pipe system ranging in size from 30- to 10-in diameter, 3.5 miles total length. 6,000 ft of 30-in pipe is reinforced plastic mortar. Remainder of system is asbestos-cement pipe ranging from 21- to 10-in diameter.
Spring Hill: Buried pressure-fed pipe system ranging in size from 54- to 6-in diameter, 84.5 miles total length. Asbestos-cement pipe used on 66.8 miles, and reinforced concrete pipe on 17.7 miles.