• Hydraulic Capabilities

    WaterNAM's extended period hydraulic analysis capabilities include:

    • Simulation of distribution network of any size
    • Calculation of friction head loss applying the Hazen-Williams, the Darcy Weisbach, or the Chezy-Manning equation
    • Account for minor head losses at bends, fittings, etc.
    • Model constant or variable speed pumps
    • Compute pumping energy and cost
    • Model operational behavior with various types of valves, including shutoff, check, pressure regulating, and flow control
    • Model storage tanks with varying shapes (i.e., surface area can vary with height)
    • Account for multiple demand categories at nodes, each with its own pattern of time variation
    • Model pressure-dependent flow and flow from emitter nodes
    • Allows system regulations such as rule based or logical controls on pump scheduling or tank-operations
  • Water Quality Analysis Options

    WaterNAM is equipped with a powerful water quality analyzer which can:

    • Model the movement of a non-reactive tracer material through the network over time
    • Model the movement and fate of a reactive material as it grows (e.g., a disinfection by-product) or decays (e.g., chlorine residual) over time
    • Model the age of water throughout a network (water age analysis)
    • Track the percent of flow from a given node reaching all other nodes over time (trace analysis)
    • Model reactions in the bulk flow and at the pipe wall
    • Allow growth or decay reactions to proceed up to a limiting concentration
    • Employ global reaction rate coefficients that can be modified on a pipe-by-pipe basis
    • Allow for time-varying concentration or mass inputs at any location in the network
    • Model storage tanks as being complete mix, plug flow, or two-compartment reactors
  • Project Geodatabase

    WaterNAM manages model data in a standard ArcGIS® geodatabase. It allows users to maintain model element (e.g. junctions, pipes, valves) data in individual layers in the geodatabase, while the non-visual information and general project setting options are stored in a set of predefined tables in the project geodatabase. Thus, WaterNAM provides a comprehensive framework for water utility management.

  • Object-tree Panel for Model Data Interface

    WaterNAM runs in ArcGIS® 10.x (ArcMap™ 10.x) platform. It adds a tool bar and a comprehensive tree-structured model interface in ArcMap™. The simulation options, model objects and operational settings are organized in easy-to-use rows in a tree panel, and the panel provides the utmost flexibility in editing model data.

  • Drag-and-Drop Model Builder

    The drag-and-drop model builder in WaterNAM enables users to efficiently create a water distribution model using existing GIS layers of the network components. Since network information are often readily available in GIS format and can be imported from CAD files, the drag-and-drop model builder extracts necessary information directly from the GIS data sources to quickly develop a water distribution model for hydraulic analyses or design.

  • Network Analysis Tool

    The Network Analysis Tool in WaterNAM identifies the discontinuities or irregularities in the existing node and link layers of a water distribution model. It enables a user to quickly find the type and extent of data anomalies, view them in comprehensive groups, and correct network errors before running a simulation.

  • Rule Based Control Editor

    WaterNAM allows users to set logical controls on the operational devices (e.g. pumps, valves) in a straightforward way. The control editor provides options for either a single or a combination of operational conditions under each rule.

  • Advanced Attribute Editing and Management

    WaterNAM introduces some special features to edit and manage project information such as:

    • Viewing and editing of element properties in tables (i.e. grid view)
    • Accessing all editing options and tools of ArcMap™ 10.x (including symbology and styles)
    • Previewing input file for model simulation using the Project Details Report
    • Setting desired numeric precision for the hydraulic parameters
    • Importing curve data from text files or spreadsheets
  • Model Result Presentation

    In WaterNAM the simulation results are presented in a number of ways including:

    • Detailed simulation status report with convergence error
    • Time series output of hydraulic and water quality variables (charts and tables)
    • Time series comparison between two analysis variables (charts)
    • Profile plot of analysis variables along a defined pipe line (elevation view)
    • Reaction summary report (pie-chart)
    • Energy-cost report (table)
    • Result table for the analysis variables 
  • EPANET Compatibility

    WaterNAM is fully compatible with EPANET, which is freely available from USEPA. Its wide range of applications and long history make it a very reliable software for analysis and design of water distribution systems. WaterNAM integrates the hydraulic engine of EPANET in ArcMap™ 10.x and it can:

    • Export a WaterNAM project to an EPANET model network file (.inp file)
    • Export a WaterNAM project to an EPANET model scenario file (.scn file)