Broad River Basin Model




Need for a Hydrologic Model

The Broad River basin covers 5,419 square miles of total drainage area, 1,513 square miles entirely within North Carolina.  The basin supplies water to the population of nearly 342,282 people residing in 8 North Carolina counties within the basin. Water use in the basin is almost evenly split between ground water and surface water sources.  The model will only cover the Broad River to the confluence of Buffaloe Creek and the Broad River (below which all tributaries originate in South Carolina).

A computer model is a needed tool for evaluating surface water resources management in the basin.  For long term planning, the State can use the model in making regulatory decisions by evaluating potential impacts of proposed projects with significant water withdrawals within the basin as well as interbasin transfer permit applications.  Local units of government as well as the State can use the model to plan for increased water use due to growth, and to evaluate the effects of operational and regulatory constraints during a drought condition. 


OASIS, a patented, mass balance, water resources simulation/optimization model was developed for the Broad River basin. This basinwide model uses the finest practical geographic resolution and time step.

Model Version 2011

The current version of the model development project was started in late 2010 and was completed in early 2012. It includes hydrologic period from Jan 1929 to September 2009 with water withdrawal data for year 2010 as base case scenario and 50-year planning projection period scenarios from 2020 to 2060 for every 10-year interval. 

EMC Approval in 2012

Archived Model Development Documents/Presentations

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