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SewerGEMS offers a solution available for optimizing Best Management Practice ( BMP ) <br /> designs and meeting sanitary sewer overflow (SSO ) and combined sewer overflow ( CSO ) <br /> regulations . <br /> With SewerGEMS, users can : <br /> Develop System Master Plans <br /> • Assess the impact of inflow and infiltration on <br /> SSOS <br /> Develop SSO and CSO remediation programslw � 116 - r <br /> • Perform system evaluations associated with US <br /> EPA CMOM and NPDES .ys^tia <br /> • Optimize lift station and system storage Zt l <br /> capacities - J- •F� <br /> • Determine developer connection fees <br /> • Implement real-time control strategies <br /> • Model relief sewers , overflow diversions , and _ <br /> inverted siphons -- <br /> . Accurately simulate operations with variable- 1 <br /> speed pumping and logical controls <br /> • Simulate out-of-service or proposed sewers <br /> within the same model <br /> Hoested Methods WaferGEMS <br /> —' FlowMaster <br /> FlowMaster 2005 is an efficient and powerful program for the design and analysis of pipes, <br /> ditches, open channels , weirs, orifices , and inlets . FlowMaster's "Hydraulics Toolbox" can solve <br /> or rate any unknown variable using the Manning 's, Hazen - Williams' , Kutter's, Darcy-Weisbach , <br /> and Colebrook-White formulas . FlowMaster' s new inlet computations strictly comply with the <br /> latest FHWA Hydraulic Circular Number 22 ( replacing Circular 12) . <br /> FlowMaster will solve for any unknown variable in gutter cross sections , inlets, weirs, orifices , <br /> irregular channels , pressure pipes , standard open channels , parabolic channels, box pipes , <br /> and elliptical pipes . Create multiple design trials , calculate them all simultaneously, and <br /> compare the results in customizable tabular reports and graphs . <br /> • FlowMaster can now perform gradually varied flow calculations for any free surface <br /> flow element <br /> • Model curb, grate, slot, combination , and ditch inlets using calculations based on <br /> FHWA Hydraulic Engineering Circular No . 12 and Circular No . 22 methodologies <br /> • Analyze any inlet in sag or on grade with a continuously or a locally depressed gutter <br /> • Calculate water spread and gutter depth for a gutter or pavement section <br /> ` a Size or evaluate flow for sharp-crested weirs, broad-crested weirs , and orifices <br /> FlowMaster can now calculate parabolic channels, box pipes , and elliptical pipes <br /> • FlowMaster will solve for any variable , including discharge , headwater elevation , <br /> _ discharge coefficient and more . Even submergence ( tailwater effect ) in orifices and <br /> weirs is taken into account <br /> • Enter the geometry and variable roughness for your irregular sections (open or <br /> " closed ) to model irregular open and closed cross sections effortlessly <br /> • Compute composite roughness values for your irregular section using various <br /> methods including Lotter, Horton , Pavlovskii , or the Colebatch and Cox method , as <br /> well as the combination of Horton and Lotter that was available in the previous <br /> version <br /> 153 <br /> GIS Needs Assessment and Implementation Plan Chapter 1 - Departmental GIS Needs Assessment <br />