Model Development Project Launch
The North Carolina Division of Water Resources has launched the hydrologic model
development project for Tar River basin. The
project kickoff meetings was held in
Greenville, NC on July 15, 2010.
Need for a Hydrologic Model
The Tar-Pamlico basin covers 5571 square miles of drainage area entirely within
North Carolina. The basin supplies water to the population of nearly 415,000 people
residing in 16 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 Tar River portion of the basin.
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 Model
OASIS, a patented, mass balance, water resources simulation/optimization model
will be developed for the Tar river basin. This basinwide model will use the
finest practical geographic resolution and timestep.
EFDC Model
The Environmental Fluid Dynamics Code (EFDC) is a state-of-the-art hydrodynamic
model that is used to simulate aquatic systems in one, two, and three dimensions.
EFDC Model Background Information
Greenville Utilities Commission (GUC) signed a resolution in July 2012 to participate
in the HB 609 process and partner with
the NCDWR for the development of water supply alternatives to support the next GUC
WTP expansion. GUC developed the EFDC model as part of the Tar River Flow Study.
NCDWR's current focus will be on potential salinity impacts to GUC's water supply,
with upstream movement of the freshwater / saltwater interface, especially under critical drought periods.
If you would like access to the OASIS or EFDC model, Contact
Charles Theobald (charles.theobald@ncdenr.gov) or
Neelufa Sarwar (neelufa.sarwar@ncdenr.gov) to request access to the model.