27 Aug 2026

Acoustic Backscatter and Suspended Sediment Data Analysis Tool (ABSSDAT)

Abstract: The Acoustic Backscatter and Suspended Sediment Data Analysis Tool (ABSSDAT), presented by this report, is developed in MATLAB. It streamlines the process of calibration of Acoustic Doppler Current Profilers (ADCPs) and total suspended material (TSM) Data, computation of suspended sediment flux, contour plots, and vector plots. This application was tested with ADCP and TSM Data from the Red River near Overton Lock and Dam in Alexandria, Louisiana. Sediment Flux was calculated with two methods, one with ABSSDAT method and one with the USGS “moving boat” method. The comparison shows that both methods are within less than 5 percent error. The ABSSDAT application was also used to generate contour plots for velocity and TSM for each site along with velocity vector plots for transects. The report also details the manual for the complete usage of the ABSSDAT application.

30 Apr 2025

Corps Shoaling Analysis Tool (CSAT) User Guide

Abstract: The Corps Shoaling Analysis Tool (CSAT) is a suite of computational routines for evaluating shoaling rates in navigation channels maintained by the US Army Corps of Engineers (USACE). This is achieved using survey data from the eHydro enterprise hydrographic survey database. At the local scale, CSAT’s outputs are useful for understanding historical shoaling trends and identifying shoaling hotspots, while enterprise-level shoaling forecasts support Operations and Maintenance (O&M) planning over a 5-year time horizon. This user guide provides practical, step-by-step instructions for new CSAT users who wish to download, install, and run the tool. Later sections provide insight into CSAT’s advanced features while also describing the methods and assumptions that underlie the calculations.

29 Apr 2025

Tools for Inlet Geomorphic Mapping: An Overview and Application at East Pass, Florida and Fire Island Inlet, New York

Abstract: The purpose of this Coastal and Hydraulics Engineering Technical Note (CHETN) is to highlight emerging tools for inlet geomorphic mapping and describe the workflows used to implement the tools. The Coastal Inlets Research Program (CIRP) maintains the US Coastal Inlets Atlas, which houses technical information (e.g., physical processes, navigation channel position, federal authorization for management purposes) on tidal inlets. Future expansion of the Atlas should include ready-made products that address a call from coastal inlet managers and practitioners to map inlet geomorphic change and features more accurately. The methods and workflows demonstrated in this document represent the first step towards expanding the US Coastal Inlets Atlas.

12 Sep 2024

SEG-2 Viewer MATLAB App User Guide

Purpose: This technical note documents the functionalities of the SEG-2 Viewer and provides a step-by-step user guide for the application. SEG-2 Viewer is a MATLAB app that was developed at the Geotechnical and Structures Laboratory (GSL) of the US Army Engineer Research and Development Center (ERDC) for visualizing and analyzing geophysical data in SEG-2 format.

20 Oct 2023

DataSwitch Data Sweeper (DS)2

Purpose: The purpose of this Coastal and Hydraulics Engineering technical note (CHETN) is to specify the software requirements, architecture, and detailed design for the DataSwitch Data Sweeper (DS)² application. This document is designed for the software developers maintaining (DS)² and is intended to aid these developers in understanding its architecture and underlying functionality.

20 Sep 2021

Performance Testing and Modeling of a Transpired Ventilation Preheat Solar Wall: Performance Evaluation of Facilities at Fort Drum, NY, and Kansas Air National Guard, Topeka, KS

Abstract: This work performed measurement and verification of installed, operational solar wall systems at Fort Drum, NY, and Forbes Field, Air National Guard, Topeka, KS. Actual annual savings were compared estimated savings generated by a solar wall modeling tool (RETScreen). A comparison with the RETScreen modeling tool shows that the measured actively heated air provided by the solar wall provides 57% more heat than the RETScreen tool predicted, after accounting for boiler efficiency. The solar wall at Fort Drum yields a net savings of $851/yr, for a simple payback of 146 years and a SIR of 0.16. RETScreen models indicate that the solar wall system at Forbes Field, Kansas Air National Guard, Topeka, KS saves $9,350/yr, for a simple payback of 58.8 years and a SIR of 0.34. Although results showed that, due to low natural gas prices, the Fort Drum system was not economically viable, it was recommended that the system still be used to meet renewable energy and fossil fuel reduction goals. The current system becomes economical (SIR 1.00) at a natural gas rate of $16.00/MMBTU or $1.60 /therm.