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increased hydraul ic capacity wi II be developed by sum mer pum ping of higher production rate wells outside the District boundaries. For instance, peaking capacity could be developed by pumping "super wells" within the Willows Water District for 60-90 days over the summer period to meet the peak flow need. Historic Water Usage The average residential unit (SFE) in the District uses approximately 150,000 gallons per year (0.46 acre-feet per year) with 48% for indoor uses and 52% for outdoor uses. Average indoor uses are approximately 6,000 - 7,000 gallons per month with a summer peak usage of over 25,000 gallons per month. Outdoor turf irrigation ranges from 4 inches per month in spring and fall to a maximum of 6.4 inches in July. Approximately 25 percent of water suppl ies (0.14 acre-feet per SFE per year) are used on parks and outdoor areas such as schoolyards as well as for system losses. This results in a gross water demand in the district for water supply planning purposes of 0.6 acre-feet per year. The District has experienced rapid growth of residential units, especially since 1990. Table E-1 illustrates the growth in SFE's and annual water deliveries since 1981. Table E.1 - Historic Water Usage - EccVWSD Year SFE Connections Water Deliveries Annual Water Delivered (ac.ft. per SFE) (Ac-ft) 1981 1,063 0.56 638 1982 1,300 0.53 780 1983 1,841 0.53 1,105 1984 2,445 0.60 1,467 1985 3,097 0.62 1,858 1986 3,480 0.66 2,088 1987 3,763 0.62 2,258 1988 4,006 0.68 2,404 1989 4,174 0.68 2,504 1990 4313 0.66 2,588 1991 4583 0.61 2,750 1992 5,112 0.62 3,067 1993 5,794 0.59 3,476 1994 6,545 0.68 3,927 1995 7,253 0.53 4,352 1996 8,120 0.68 4,872 1997 9,161 0.56 5,359 I 1998 9,797 0.59 5,878 I 1999 11002 0.58 6,601 2000 13,612 0.60 8,167