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Alderpoint (formerly, Alder Point) is a census-designated place in Humboldt County, California at an elevation of 472 feet (144 m), 11 miles (18 km) east-northeast of Garberville. The ZIP Code is 95511, its area code is 707, and its population was 186 in the 2010 census.
Humboldt County General Plan Water Resources Technical Report Alderpoint Water District The Alderpoint Water District was originally organized in 1965. The governing board of the District is the Board of Supervisors; however, the Board of Supervisors appoints a 5 member Board of Directors to supervise the business of the District. The source of water for the District is an infiltration gallery in the Eel River bed. The infiltration gallery collection pipe is approximately nine feet below the bed of the river. From the infiltration gallery wet well, water is pumped through a six-inch cast iron main to a 5,000-gallon staging tank located 130 feet above the riverbed. The 5,000-gallon tank and its accompanying pump house are located just off River Road. Calcium hypochlorite, a disinfectant, is added to the water in the 5,000-gallon tank. From the 5,000-gallon staging/preliminary distribution tank, water is pumped up another 300-feet, via a six inch main, to a 100,000-gallon redwood storage tank. This main storage tank feeds water into the distribution system serving the community. Water is distributed directly to several households along River Road north and south of the 5,000-gallon tank from the line to the 100,000-gallon tank. The main distribution system contains approximately 2.5 miles of mainline varying in size from two-inch to six-inch is in diameter. According to statistics derived from the February 2003 Water System Feasibility Study, supply capacity is the range of 216,000 to 320,000 gallons per day, which is well in excess of the current demands and production. Alderpoint is planning to install new pumps, which would provide about 200 gallons per minute (gpm) or 288,000 gallons per day (gpd). Currently, the District holds a permit from the State Water Resources Control Board for appropriation of 0.25 cubic feet per second that converts to approximately 161,500 gallons per day.
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