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Culvert Diameter Peak Flow Drainage Area • <br />(in) (efs) (ac) <br />24 0 to 18 0 to 30 <br />30 18 to 32 30 to 50 <br />36 32 to 52 50 to 80 <br />42 52 to 77 80 to 125 <br />Thus, with the above information, once a light-use road culvert location is determined, <br />the drainage area can be calculated and the correct culvert size installed. Peabody will <br />update the PAP and e~chibits with the installed light use road culvert locations in the <br />Annual Reclamation Report. <br /> <br />• <br />13-9-2 <br />