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I I I I I I I I I I I I I I I I I ./ I I 12. The resulting monthly peaking factor for the 8-year period was 1.84. For the three years in which the highest volume of water use was recorded, the average monthly peaking factor was 1.81. The monthly peaking factor expressed in another form is the percent of the annual use during one peak month. For a 1.84 monthly peaking factor, the one- month total is 15.33 percent of the annual volume. Oeri vi ng the peaki ng factors for lO-day and daily flow is usually based upon actual use records. Long-term records of this nature are not available for Towaoc and we expect that future use patterns will change substantially when the fi rm water supply becomes avail abl e. The research by Hughes and Gross (1979), for small towns in Utah, shows the lO-day peaki ng factor to be 11 0 percent of the monthly peaki ng factor wi th the dai ly peaki ng factor bei ng 119 percent of the monthly peaking factor. Table 3.1 sUl1111arizes the computation for a Towaoc municipal system peaking requirements based on the aforementioned percentages. ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- Table 3.1 Estimated Towaoc Water Demand Peaking Factors Average Annual Basi s Monthly Peaki ng Factor lO-Day Peaki ng Factor Oaily Peaking Factor 1.0 l.R4 2.02 2.19 ------------------------------------------------------------------------------- ------------------------------------------------------------------------------- Table 3.2 extends the peaking factors into flow rates for the case in which the total annual delivery is to be 1,000 af. 3-6 10fi0c