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<br />Table 6 -- TOPWIDTH VS. DEPTH FOR EXAMPLE CHANNEL DESCRIPTION <br /> <br />Mile 0.0 Mile 12.3 Mile 40.5 <br />Depth Topwidth Depth Topwidth* Depth Topwidth* <br />0 0 0 0 0 0 <br />8 480 8 437 8 472 <br />18 900 18 826 18 862 <br />28 1300 28 1337 28 1338 <br />38 1350 38 1407 38 1456 <br /> <br />" <br /> <br />~ <br /> <br />*Linearly interpolated to agree with depth value at mile zero. <br /> <br />To determine the distance weighted average X-section, the depth vs. <br /> <br /> <br />topwidth data is substituted into the relation given in (Eq. (40)), i.e., <br /> <br /> <br />for hl = 8, <br /> <br />- <br />B = <br />1 <br /> <br />480 + 437 <br />2 <br /> <br />437 + 472 <br />(12.3 - 0.0) + 2 <br /> <br />(40.5 - 0.0) <br /> <br />(40.5 - 12.3) <br /> <br />= 455.7 <br /> <br />for h2 = 18; <br /> <br />- <br />B2 <br /> <br />900 + 826 <br />2 <br /> <br />826 + 862 <br />(12.3 - 0.0) + 2 <br />(40.5 - 0.0) <br /> <br />(40.5 - 12.3) <br /> <br />= 849.8 <br /> <br />for h3 = 28, <br /> <br />.. <br /> <br />B = <br />3 <br /> <br />1300 + 1337 <br />2 <br /> <br />1337 + 1338 <br />(12.3 - 0.0) + 2 <br />(40.5 - 0.0) <br /> <br />(40.5 - 12.3) <br /> <br />= 1331.7 <br /> <br />1-32 <br />