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<br />Peak outflows arising from S + ~ routing are: <br />2 <br />~O = 235 cfs <br />Q50 = 3143 cfs <br />~OO = 6710 cfs. <br />Q500 = 19425 cfs <br /> <br />The basis of the hydraulic analysis over watercourse 1200 is critical <br />depth over a X-sec which varies from reach to reach. <br /> <br /> Reach <br />l. 0-840 <br />2. 840-5000 <br />3. 5000-6000 <br />4. 6000-7000 <br />5. 7000-up <br /> <br />Characteristics <br /> <br />Typical sec's 1055, 1060, 1063 <br />Sec of 6 streets plus flow area between <br />streets. <br />4 street s, etc. <br />3 streets plus, etc. <br />450' as w/sec.l1l0 <br /> <br />For the analysis, rating curves exist for reaches 1 & 5. <br /> <br /> <br />3, & 4 a "per street" rating curve is developed. <br /> <br />For reaches 2, <br /> <br />The basis for the "per street" curves follows: <br /> <br /> <br />1. Streets are 35' wide. Flow is confined to streets for discharges <br /> <br /> <br />not exceeding approxima-~ely 300 cfsl street. <br /> <br /> <br />2. For flows above 300 cfs/street, additional areas allow flow <br /> <br /> <br />(e.g. sidewalks & areas between homes). It was determined in the study <br /> <br /> <br />of South Pueblo that flows are blocked 70% over residential lots due to <br /> <br /> <br />houses. Measurements show the average distance between street f,s is 500'. <br /> <br /> <br />Sidewalks are 5'. <br /> <br />.500' <br /> <br /> <br />l/5lf~ ~~ <br />r- 9/ -~ /:f5l&d3! f'/rtJjXfl; JhffJ <br /> <br />2 <br /> <br /> <br />; <br /> <br />, <br />