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 reach 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. Hydrologic Engineering Center Flood Impact Analysis (HEC-FIA) Version 2.2 Model Certification Memo HEC-FIA Version 2.2 was certified for use through 30 August 2023. 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 1.0.11.0 (Certified) This model assists with formulating plans, cost-effectiveness, and incremental cost analysis, which are required in ecosystem restoration projects. IWR Planning Suite 2.0.6 (Certified) This model expands Version 1.0.11.0 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. 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. Section 902 Analysis Certified Tool Manual This is a manual that accompanies the Section 902 Certified Analysis 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)." U.S. Army Corps of Engineers Section 902 Cost Limit Policy Clarification and Applicability Inspection of Section 902 Cost Limit Requirements for Civil Works Projects Corps Section 902 Cost Limit Policy Clarification and Applicability Procedures - Notable Deficiency U.S. Army Corps of Engineers Engineer Inspector General Inspection Report 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

Guidance

Assuring Quality of Planning Models: EC 1105-2-412 Rollout Webinar Certification of the Average Annual & Interest During Construction Tool Delegation of Model Certification This memo directs that guidance contained within EC 1105-2-412, Assuring Quality of Planning Models, as well as the memorandum issued 4 December 2017, Modification of the Model Certification Process and Delegation of Model Approval for Use, remain applicable until and update of the EC is issued, with the exception that certification of models is now delegated to the Directors of the Planning Centers of Expertise. Engineer Circular 1105-2-412: Assuring Quality of Planning Models This circular establishes the process and the requirements for assuring the quality of planning models. Per Planning Bulletin 2013-02 (March 2013), EC 1105-2-412 remains in effect until permanent planning model guidance is issued. Engineering and Construction Bulletin No. 2007-6, Model Certification Issues for Engineering Software in Planning Studies The purpose of this document is to clarify issues regarding the application of EC 1105-2-407, "Planning Models Improvement Program: Model Certification" to engineering software used in USACE studies. HarborSym Manual NETS activity: HarborSym: A Data-driven Monte Carlo Simulation Model of Vessel Movement in Harbors HarborSym Widening Model Certification Memorandum 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. Modification of the Model Certification Process and Delegation of Model Approval for Use This memo directs that guidance contained within EC 1105-2-412, Assuring Quality of Planning Models, remains applicable until and update of the EC is issued and, further, that the requirement for a HQUSACE Model Certification Panel is rescinded and the responsibilities are transferred to the PCX in accordance with their enterprise-wide role in their mission areas. Planning Bulletin 2013-02: Assessing Quality of Planning Models (EC 1105-2-412) Guidance for assuring the quality of Planning models contained in EC 1105-2-412 (expiration March 31, 20 13) remains in effect per this Planning Bulletin until permanent Planning models guidance is issued as an Engineering Regulation later this year. Memo: Policy Guidance on Certification of Ecosystem Output Models This memorandum establishes additional policy and procedures regarding the certification requirements for ecosystem output models used in all planning activities. Protocols for Certification of Planning Models: Planning Models Improvement Program This paper provides information on the certification process and on the criteria to be used to ensure high quality models for use by Corps planners. Regional Economic System (RECONS) – Model Re-Certification 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. An earlier version of RECONS was previously certified by HQUSACE.

Planning Centers of Expertise

Coastal Storm Risk Management Deep Draft Navigation Ecosystem Restoration Flood Risk Management Inland Navigation Water Management and Reallocation

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