<html> <head> <title>Rule 74:02:08:07 Minimum spillway design flood requirements -- Exception.</title> <META NAME="Keywords" Content="Administrative Rules 74:02:08:07"> <META NAME="Description" Content="Administrative Rules 74:02:08:07 Minimum spillway design flood requirements -- Exception."> <meta name=Generator content="Microsoft Office HTML Filter 2.0"> <meta http-equiv=Content-Type content="text/html; charset=windows-1252"> <meta name=Originator content="Microsoft Word 10"> <style> <!-- --> </style> </head> <body lang=EN-US> <div> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>74:02:08:07.&nbsp;&nbsp;Minimum spillway design flood requirements -- Exception.</b> The hydraulic capacity of a dam must, by category and size, be such that the following minimum spillway design floods can be passed through the spillways without overtopping the structure:</font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> <table border=1 cellspacing=0 cellpadding=0> <tr> <td width=162 valign=top> <p align=center><b><font size=3 face="Times New Roman">CATEGORY</font></b></p> </td> <td width=126 valign=top> <p><b><font size=3 face="Times New Roman">SIZE</font></b></p> </td> <td width=264 valign=top> <p><b><font size=3 face="Times New Roman">SPILLWAY DESIGN FLOOD</font></b></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">3</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Small</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">50-year frequency unless dam</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">qualifies for §</font> <font size=3 face="Times New Roman">74:02:08:07.01</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">exception</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Intermediate</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">100-year frequency</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Large</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">0.5 PMF</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">2</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Small</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">100-year frequency</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Intermediate</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">0.5 PMF, unless dam qualifies</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">for §</font> <font size=3 face="Times New Roman">74:02:08:07.02 exception</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Large</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">PMF</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">1</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Small</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">0.5 PMF</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Intermediate</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">0.5 PMF</font></p> </td> </tr> <tr> <td width=162 valign=top> <p align=center><font size=3 face="Times New Roman">&nbsp;</font></p> </td> <td width=126 valign=top> <p><font size=3 face="Times New Roman">Large</font></p> </td> <td width=264 valign=top> <p><font size=3 face="Times New Roman">PMF</font></p> </td> </tr> </table> <p><font size=3 face="Times New Roman">&nbsp;</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; A spillway system for a dam must meet the requirements in this section unless the owner can provide information and justification to show the chief engineer that the proposed design flow can be stored, passed through, or passed over the dam without failure of the dam or if a variance is granted pursuant to SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-7-5.3">46-7-5.3.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Source:</b> 13 SDR 49, effective October 27, 1986; 13 SDR 129, 13 SDR 141, effective July 1, 1987; 13 SDR 197, effective July 2, 1987; 14 SDR 67, effective November 8, 1987.</font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>General Authority:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-2-5">46-2-5</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-7-3">46-7-3.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <b>Law Implemented:</b> SDCL <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-5-8">46-5-8</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-5-30">46-5-30</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-7-3">46-7-3</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-7-5">46-7-5</A>, <A HREF="/statutes/DisplayStatute.aspx?Type=Statute&Statute=46-7-5.3">46-7-5.3.</A></font></p> <p><font size=3 face="Times New Roman">&nbsp;</font></p> </div> </body> </html>