Laserfiche WebLink
<br />..0 <br />~ <br />lIII:r' <br /> <br />c. <br /> <br />o <br /> <br />The maximum capacity of the Guriey Intake Ditch upstream of the chute is <br />calculated to be 360 cfs; as will be discussed in greater detail with regard to the <br />sensitivity analysis, this is not sufficiently different from the reported value to <br />warrant a revision of the 400 cfs value. <br /> <br />To evaluate whether there are any serious constrictions in the system and whether 600 cfs <br />could be delivered to the reservoir if the ditch capacity is limited to 400 cfs above the chute, a <br />comparison of ditch capacity to flow proportioned for contributing drainage area was <br />undertaken. For this analysis the following assumptions were made: <br /> <br />o The total runoff rate for the entire drainage area contributing to the Gurley Intake <br />Ditch was 600 cfs. <br /> <br />o All watersheds were running simultaneously and contributing runoff in proportion <br />to their drainage area. <br /> <br />o The required discharge rates at the selected locations in the ditch were <br />estimated in proportion to the 600 cfs value. The proportion used was the ratio <br />of the contributing watershed drainage area above that point to the total area. <br /> <br />The results of this analysis are summarized in Table 3. <br /> <br />5 <br />