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Planning Models

    Certified and other national models, guidance, and PCX links.

    Certified Models
    These models have met all requirements and are certified for use on planning studies.
    • Beach-fx 1.0 (Certified)
        BEACH-fx is a certified prototype shore protection engineering-economic software tool. The model consists of a Monte-Carlo simulation that evaluates beach erosion, physical storm impacts, and damages that occur from a storm passing a shore. The goal of this project is to produce a tool to assist engineers in coastal nourishment and rehabilitation studies.
    • HarborSym (Certified)
        HarborSym is a planning-level simulation model designed to assist in economic analyses of coastal harbors. With user-provided input data, such as the port layout, vessel calls, and transit rules, the model calculates vessel interactions within the harbor. Unproductive wait times result when vessels are forced to delay sailing due to transit restrictions within the channel; HarborSym captures these delays.
    • HEC-FDA : Flood Damage Reduction Analysis Software 1.4 (Certified)
        This certified software provides the capability to perform an integrated hydrologic engineering and economic analysis during the formulation and evaluation of flood risk management plans. HEC-FDA is designed to assist US Army Corps of Engineers (USACE) study members in using risk analysis procedures for formulating and evaluating flood risk management measures (EM 1110-2-1619, ER 1105-2-101).
    • HEC-FIA 2.2 (Certified)
        The Hydrologic Engineering Center's (HEC) Flood Impact Analysis (HEC-FIA) software is a tool to help identify the consequences from a single event. HEC-FIA was developed by HEC in collaboration with the Risk Management Center (RMC) and the Engineering Research and Design Center (ERDC). HEC-FIA evaluates consequences from events defined by hydraulic model output such as gridded data (e.g., depth and arrival time Grids) or HEC's Data Storage System (HEC-DSS) Stage Hydrographs. The consequences HEC-FIA computes include economic losses (losses to structures and their contents), agricultural losses, and expected life loss from these hydraulic events.
    • HEC-LifeSim 1.01 (Certified for Life Loss Estimation)
        The Hydrologic Engineering Center's (HEC) Life Loss Estimation (HEC-LifeSim) software is a spatially-distributed dynamic simulation modeling system for estimating potential life loss and direct economic damages from floods. The software is used extensively in the USACE Dam and Levee Safety Programs to inform program priorities and investment decisions; however, for use in traditional USACE planning studies it is certified for estimating potential life loss only.
    • IWR Planning Suite (Certified)
        This model assists with formulating plans, cost-effectiveness, and incremental cost analysis, which are required in ecosystem restoration projects. Use of this model is acceptable for teams that for Review Plans approved with these versions prior to May 31, 2018. Other studies should be using IWR Planning Suite II (Version 2.0.9).
    • IWR Planning Suite 2.0.6 (Certified)
        This model expands Version by adding an "annualizer" module. This module allows for easy calculations of equivalent annual average values, total net values, annualizing non-monetary benefits, and calculating costs. Use of this model is acceptable for teams that for Review Plans approved with these versions prior to May 31, 2018. Other studies should be using IWR Planning Suite II (Version 2.0.9).
    • IWR Planning Suite II (version 2.0.9) (Certified)
        IWR Planning Suite II (version 2.0.9) includes the following modules to assist with plan formulation and evaluation: Plan Generator; Cost-Effectiveness and Incremental Cost Analysis (CE/ICA); Annualizer; Multi-Criteria Decision Analysis (MCDA); Uncertainty Analysis; and Watershed Wizard. This version of the software provides improved performance across all modules, a new user interface and database, and more robust reporting capabilities than previous versions. Please refer to the 31 May certification memo for conditions regarding use of this model.
    • ORNIM (Certified)
        Ohio River Navigation Investment Model (ORNIM) is a planning-level model developed by the Corps of Engineers to assist in economic analysis of proposed inland navigation investments. OR-NIM was first used in the Ohio River Mainstem Systems Study (ORMSS) to develop a system investment plan incorporating risk and uncertainty, and made possible the first systemwide optimization of navigation investments.
    • Regional Economic System (RECONS)
        The RECONS 2.0 model is a regional economic impact modeling tool developed by the USACE Institute for Water Resources (IWR) to provide accurate and defensible estimates of regional economic impacts associated with Federal expenditures. This modeling tool automates calculations and generates estimates of jobs and other economic measures such as income and sales associated with USACE spending on Civil Works programs and projects. The RECONS 2.0 model incorporates impact area data, multipliers, direct ratios, and geographic capture rates extracted from other planning models utilized to evaluate the economic effects of proposed actions.
    • Section 902 Analysis Certified Tool
        Section 902 of the Water Resources Development Act (WRDA) of 1986 defines the maximum amount that a project may cost. This is often called the 902 Limit or Project Cost Cap. It is, "The maximum project cost limit imposed by Section 902 is a numerical value specified by law which must be computed in a legal manner (ER 1105-2-100 Appendix G)." This tool assists with this calculation.
    • Unit Day Value (UDV) tool
        The Unit Day Value (UDV) tool is a certified spreadsheet intended to calculate recreation values. Please note the policy limitations on using UDV and also ensure that the current year's version (updated annually) is being employed.

    National Models In Review
    • HEC-EFM Plotter: Ecosystem Functions Model Plotter (In review)
        HEC-EFM Plotter is designed to help users view, navigate, and interpret output generated by HEC-EFM. Available outputs are automatically imported as a series of "Standard Plots" for the flow regimes and relationships being analyzed in HEC-EFM.
    • HEC-EFM: Ecosystem Functions Model (In review)
        The Ecosystem Functions Model (HEC-EFM) is designed to help study teams determine ecosystem responses to changes in the flow regime of a river or connected wetland. HEC-EFM analyses involve: 1) statistical analyses of relationships between hydrology and ecology, 2) hydraulic modeling, and 3) use of Geographic Information Systems (GIS) to display results and other relevant spatial data.
    • HEC-WAT: Watershed Analysis Tool (In review)
        The Watershed Analysis Tool (HEC-WAT) software developed by the US Army Corps of Engineers' Hydrologic Engineering Center (HEC) is a tool that streamlines the analytical and reporting processes of software commonly used by the multi-disciplinary teams in Corps offices for water resources studies. The WAT accomplishes this through a common graphical user interface in the PC environment.

    Ecosystem Restoration Model Library
    The Ecosystem Restoration Planning Center of Expertise Model Library is intended to serve planners and practitioners of ecosystem restoration by consolidating and providing access to information about ecosystem restoration planning models and software.

    Other Model Documentation


    Planning Centers of Expertise


    • Ecological Model Review and Certification Process (9 July)
      This webinar, presented by Nate Richards (ECO-PCX Model Review Manager), provided an overview of the model certification process for ecological models and presented advancements in the process. Model review and certification has a reputation of taking a long time and requiring significant funds. These misconceptions, among others, have decreased in recent years thanks to a greater understanding of the certification requirements, increased emphasis on model quality by planning teams, delegation of approval authority, and implementation of best practices. The webinar also provided useful information and tips for planners, decision-makers, researchers, and others that develop, implement, and review aspects of ecological planning models.
    • Ecological Model Development within the Planning Phase (20 February)
      This webinar provided an overview of the advancements being made in ecological model development. The webinar was presented by Dr. Kyle McKay (ERDC-EL), Dr. Todd Swannack (ERDC-EL), and Nate Richards (ECO-PCX Model Review Manager), and focused on developed and implemented tools, guidelines, and methodologies that improve the way we develop ecological models and align development, certification, and project planning. Case studies presented demonstrated that model development and certification are not only possible within SMART Planning timelines, but also valuable to decision-making.

    • IWR Planning Suite II (3 October)
      This webinar provided an overview of the capabilities and uses of the USACE-certified IWR Planning Suite II (IWRPS-II) software. The webinar was presented by Shawn Komlos and Laura Witherow (Institute for Water Resources), as well as and Cory Rogers (CDM Smith) and focused on the IWRPS-II Multi-Criteria Decision Analysis module and its potential uses during execution of USACE Planning Studies.

    • IWR Planning Suite II (26 July)
      Ms. Laura Witherow (Institute for Water Resources) and Ms. Monique Savage (St. Paul District) provided information on the IWR Planning Suite II, the latest certified version of the IWR Planning Suite Software used to conduct Cost-Effectiveness and Incremental Cost Analyses and Annualize Ecosystem Outputs for ecosystem restoration, impact analysis, and mitigation planning. The webinar highlighted the new capabilities of IWR Planning Suite II, including multi-criteria decision analysis (MCDA), uncertainty, and watershed wizard. Additional topics included how the software is used in planning, a brief review of each module within the software, and instructions on downloading the software.

    • HEC-FDA 1.4: Overview of Key Changes and Transition from Previous Versions (29 October)
      Eric Thaut, Deputy Director of the Flood Risk Management Planning Center of Expertise (FRM-PCX) was joined by John Kucharski and Bob Carl from the Hydrologic Engineering Center (HEC) to provide an overview for planning teams using the newly certified Flood Damage Reduction Analysis (HEC-FDA) 1.4 software. The webinar included a live demonstration, review and fixes of known issues, and guidance to teams for transitioning to the current certified model.

    • Planning Tools and the IWRM Suite (4 September)
    • Assuring Quality of Planning Models: EC 1105-2-412 Rollout (14 June)
      Information for the field in implementing EC 1105-2-412, Assuring Quality of Planning Models.

 Corps Castle Item is restricted to U.S. Army Corps of Engineers, CAC required. Document will open in a new window.