Preparation of HEC-HMS documentation

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" rowspan="2" width=185 BGCOLOR="#FFFFFF" TEXT="#080000"> <div> <A HREF="index.htm" TARGET="_top" TITLE="David Ford Consulting Engineers"><U><B><IMG SRC="0d058960.png" border=0 width="88" height="150" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></U></A></div> <bR> <div>    <FONT SIZE="1" COLOR="#000000" FACE="Verdana" > </FONT></div> <div> <B> <TABLE BORDER="0" CELLPADDING="4" CELLSPACING="1" WIDTH="156" BORDERCOLORLIGHT="#FFFFFF" BORDERCOLORDARK="#FFFFFF" FRAME="VOID" RULES="NONE" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP HEIGHT= 27 WIDTH="146"><div> David Ford Consulting Engineers, Inc.</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 27 ><NOBR><div> 2015 J Street, Suite 200</div> <div> Sacramento, CA 95811</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 27 WIDTH="146"><div> tel: 916.447.8779</div> <div> fax: 916.447.8780</div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 27 WIDTH="146"><div> <A HREF="mailto:support@ford-consulting.com" TARGET="_top" TITLE="mailto:support@ford-consulting.com"><U>support@ford-consulting.com</U></A></div> </tD> </tR> </TABLE></B></div> <div>    </div> <bR> <div> <A HREF="index.htm" TARGET="_top" TITLE="David Ford Consulting Engineers"><U>Home</U></A></div> <div> <A HREF="id461.htm" TARGET="_top" TITLE="About us"><U>About us</U></A></div> <div> <A HREF="news.htm" TARGET="_top" TITLE="News"><U>News</U></A></div> <div> <A HREF="hydrologic_engineering.htm" TARGET="_top" TITLE="Hydrologic engineering"><U>Hydrologic engineering</U></A></div> <div> <A HREF="water_resource_planning.htm" TARGET="_top" TITLE="Water resource planning"><U>Water resource planning</U></A></div> <div> <A HREF="flood_economic_and_risk_analyses.htm" TARGET="_top" TITLE="Flood economic and risk analyses"><U>Flood economic/risk analyses</U></A></div> <div> <A HREF="flood_warning.htm" TARGET="_top" TITLE="Flood warning"><U>Flood warning</U></A></div> <div> <A HREF="decision_support_system_development.htm" TARGET="_top" TITLE="Decision support system development"><U>Decision support systems</U></A></div> <bR> </td> <td valign="top" colspan=2 height=40 BGCOLOR="#3366CC" TEXT="#080000" bgproperties="fixed" background="14400980ezthpx.png"> <div> <B>Preparation of HEC-HMS documentation</B></div> <div> </div> </td> </tr><tr> <td valign="top" height=440 colspan=2 BGCOLOR="#FFFFFF" TEXT="#080000" bgproperties="fixed" background="06c00962egerdp.png"> <div> <B> <TABLE BORDER="0" CELLPADDING="2" CELLSPACING="1" WIDTH="547" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=TOP COLSPAN=3 BGCOLOR=#CC0000 HEIGHT= 16 WIDTH="537"><div> <B>Situation</B></div> </tD> </tR> <tR> <tD VALIGN=TOP COLSPAN=3 HEIGHT= 139 WIDTH="537"><div> As a component of the NexGen software development project at the Hydrologic Engineering Center, staff there developed HEC-HMS. This program includes capabilities to model runoff processes, channel processes, water control features, and other components and processes critical to flood damage reduction planning. But a new program means a new need for documentation, as it creates a large set of new users.  </div> <div> Under the <A HREF="hydrologic_engineer_studies_services_for_hec.htm" TARGET="_top" TITLE="Hydrologic Engineer Studies Services for"><U>HESS project</U></A>, HEC contracted with us to prepare a comprehensive set of documents for the new program. </div> </tD> </tR> <tR> <tD VALIGN=TOP COLSPAN=3 BGCOLOR=#339933 HEIGHT= 16 WIDTH="537"><div> <B>Action</B></div> </tD> </tR> <tR> <tD VALIGN=TOP COLSPAN=3 HEIGHT= 368 WIDTH="537"><div> We wrote the technical reference manual for HEC-HMS. In the manual, we describe the models that are included in HEC-HMS, we provide information about estimating parameters for the models, and we give advice regarding how and when to use the models. We include examples of the computations for the new or uncommon models that are included in HEC-HMS. Our presentation of the models is aimed at an engineer or scientist who has studied hydrology in a university-level course.</div> <div> We include also information about calibrating the models included in HEC-HMS, with details of using the automatic calibration feature. With this feature, the program user provides observed boundary conditions and system response, and the software adjusts various model parameters to fit the model to this response.</div> <div> We also developed for HEC an applications guide for HEC-HMS. This document illustrates application of HEC-HMS to (1) urban flooding studies; (2) flood-frequency studies; (3) flood-loss reduction studies; (4) flood-warning system planning studies; (5) reservoir design studies; (6) environmental studies; and (7) water management studies. For each study category, the guide identifies common objectives of the study and the authorities under which the study would be undertaken by a Corps office. It then identifies the hydrologic engineering information that is required for decision-making, and describes the appropriate models that are available in HEC-HMS for developing the information. The guide presents, in detail, an example study in each category.</div> <div> For more information about HEC-HMS, visit the <A HREF="http://www.hec.usace.army.mil" target="_blank" TARGET="_top" TITLE="http://www.hec.usace.army.mil" target="_"><U>HEC Web site</U></A>. </div> </tD> </tR> </TABLE></B></div> <div> <B><IMG SRC="18ff5550.png" border=0 width="245" height="341" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <bR> </td> </tr></table></body>