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<br />To check for submergence, the head over the weir (breach), hweir' is <br />calculated using Eq. (14), i.e., <br /> <br />h ( 81,9)2 <br />weir = 45 + 81.9 <br />60 .rso <br /> <br />= 44.1 ft <br /> <br />Then the ratio of hmax to hweir is checked as follows: <br /> <br />h <br />max <br />= <br />h <br />weir <br /> <br />25.81 <br />44.10 <br /> <br />0.59 <br /> <br />'. <br /> <br />Because the ratio is less than 0.67, the tailwater does not affect breach <br />outflow. <br /> <br />, <br /> <br />1-12 <br />