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Tuesday, October 18 • 10:30am - 11:00am
Technical Session. ArcGIS in Support of Hydraulic Modeling Applications Including Municipal Dam Removals

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AUTHORS: Tim Sullivan, GISP, Gomez and Sullivan Engineers

ABSTRACT: Rivers in the Northeast contain hundreds of aging dams which no longer serve their original purpose, are not up to design standards, and often need to be removed. Municipalities and industrial land owners across the Northeast have had to address the challenges of aging dams for decades and will continue to address them in the future. Gomez and Sullivan has conducted numerous dam removal feasibility studies and removals across the Northeast in response to these challenges. ArcGIS is an integral tool in supporting this process. This presentation will focus on how ArcGIS has been utilized in support of municipal dam removals in the Northeast. Discussion will focus on field data collection including bathymetric and site surveys which utilize various GPS and mobile GIS technologies; post processing of bathymetry data and development of terrains using ArcMap and ArcScene; and development of a hydraulic model using HEC-GeoRAS, an ArcGIS extension. Once developed, the hydraulic model is used for a variety of purposes ranging from examination of the existing hydraulic conditions (dam in place) to examination of the anticipated future hydraulic conditions (dam removed). Examples of other ArcGIS and hydraulic modeling applications will also be provided including fish passage and other environmental studies.


Tuesday October 18, 2016 10:30am - 11:00am
Nauset I

Attendees (10)