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<br /> <br />c:; <br />.2 <br />- <br />o <br />> <br />., <br />W <br /> <br />Low Flow <br />Con/rol <br /> <br />Combined Pressure and <br />( Weir Flow. <br />\ Weir Flow; ()= CLH3/2 <br /> <br />Top of Roadway <br /> <br />Pressure Flow <br />Q =A "/ZgH/K <br /> <br />Dischorl;je <br /> <br />Figure 4. Typical Discharge Rating Curve for Bridge Culvert <br /> <br />>- <br />co <br />... <br />., <br />c:; <br />UJ <br /> <br />14 <br />