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<br />Feasibility Report for Improvement of Paonia's Water Supply System
<br />Town of Paonia
<br />April 21, 2000
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<br />6.
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<br />COMPARISON OF FIRM YIELD AND FUTURE DEMANDS {L
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<br />lY 1v/13 If} lU'
<br />6.1 Average Annual Demands Comparison fJ./f/t'- to ;;;; ~ / y? C.,4.-/7'
<br />
<br />A comparison of the Town's predicted monthly fi4eld with the projected water demands in
<br />the years 2020 and 2021 is provided on Figure 6, V'';: ~;milar comparison for the years 2030 and
<br />2031 is provided on Figure 6,2, Both of these figures illustrate that without additional sources
<br />of supply or storage to carry over water from wetter periods to dry periodsl,tb.e Town will
<br />experience severe water shortages for any of the predicted growth'"s<:;enarios, Figure 6.3
<br />illustrates that without any additional source development or carry~()v;~i storage to maximize
<br />present supplies, the Town's firm yield would be exceedeqin about theY~iu- 2010 under the mo~t
<br />likely Growth Scenario B projections, )'-'?;;"~kt;, ~,!
<br />
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<br />
<br />6.2
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<br />Peak Monthly Demands Comparison
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<br />The comparisons provided in Figure 6.3 should be vieW-~d'with~aution, One could interpret
<br />these comparisons to mean that Paonia will not havewater~hoTtages until the year 2010,
<br />However, it is important to note that this figure illustrates an aver~ge .m;ri1ual comparison, Peak
<br />daily and peak monthly demands during the hotter sUIllIIler monthsc\ill~{much higher than the
<br />averages shown on Figure 6.3, Therefore, ~horter ~uraii~i1 water shorlages could occur much
<br />sooner than expected if the Town plans its"future supply 'pn;im av,~rage rather than peak month
<br />basis. .<,;' .;; "1~{~:' .:,~~~",T
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<br />The seriousness of the Town's ",;,ate,i'supply.situation isffurther illustrated by Figure 6.4, The
<br />monthly 2-year (1989/1990) fiqi'l,:"'Yield is.~9.mpared in this figure with the predicted monthly
<br />water demap.ds for the years20QO and 20'Q1:"' Figure 6.4 illustrates that if dry year conditions
<br />!ii" , -. -, ,-, ..~, .... ..
<br />were to occU8.Il. the next 2 .Y~arS\the TOwlitc9U1d'potentially experience average monthly water
<br />., ,,,': ~'--),;\'.;"- ': "',' ,,' - '. , ~ <.., ,'"
<br />shortfall(~~f.~W~:> .15 millio!?: gal}?~~ per month in June and July, Without improvements to the
<br />water suppIYs"yst.l:lm)ll1d withcop.tjul.led sales of new taps, these shortages will become more
<br />dramatic and'Wi1loc'cUr more oft~;:J;t demands increase,
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<br />6.3 Tapl>eflcit"-?:',;ccc,.;...... '
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<br />During the January II, 2000, public meeting, several citizens asked how many taps the Town.
<br />coul? sell before it runs out of water. On an average annual basis, the Town's firm yield is
<br />estiriiated to be about 703 million gallons per year and the 1999 plant inflows were estimated to
<br />(. _L
<br />pi ~,1?,9!lt 160 million' gallons per year, Therefore, the Town has about 43 million gallons of
<br />additional water available before the firm yield is reached, Based on 1999 data, it appears that
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<br />theone.water''tap would serve about 2.5 people and use about 141,620 gallons per year, This
<br />number includes unaccounted water due to system leaks and treatment plant spills. The 43
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<br />J: \PROJECTS\99368\Repons\Fcasibility wpd
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<br />m GEl Consultants, Inc.
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<br />6-1
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