image of the Catawba River Basin


The Catawba-Wateree CHEOPS (Computer Hydro-Electric Operations and Planning Software) model was developed as a study tool during the Federal Energy Regulatory Commission (FERC) relicensing of Duke Energy's hydropower projects in the Catawba River Basin.   Duke Energy has allowed the State to use their model to evaluate basin-wide water resource issues

The model incorporates operational strategies that were developed during the lengthy process of negotiations between stakeholders during the FERC hydropower relicensing process.  A component of these operational strategies is the Low Inflow Protocol (LIP), which establishes procedures for reductions in water use during periods of low flow.   A purpose of the LIP is that all parties with interests in water quantity would share responsibility to establish priorities and conserve the limited water supply.

The model uses a 15-minute time step.  The output is in both a 15-minute and daily time-step. Only the daily values are being provided to simplify and improve response time for doing analyzes and summaries.

Model Update

The model has been updated recently since the last development in 2006.

The links to the versions of the model are available here:

  1. Catawba-Wateree CHEOPS Model Version 2006 Info Link
    This link provides online modeling results and reports documented during relicensing process in 2006.
  2. Modeling Reports

  3. Catawba-Wateree CHEOPS II Model Version 2014

    CHEOPS Model Enhancement 2014:

    On behalf of the Catawba-Wateree Water Management Group (CWWMG), Duke's consulting company HDR initiated discussions with the North Carolina Division of Water Resources (NC-DWR) regarding modeling efforts in the Catawba-Wateree River Basin using CHEOPS™ for the CWWMG's Water Supply Master Planning efforts.  NC-DWR has provided funding for this project, subject to the modeling effort conforming to DWR's basin modeling requirements and in conformance with Session Law SL2010-143, and the December 3, 2010 Settlement Agreement South Carolina v. North Carolina, No 138.

    Model Technical Team Teleconferences:  Feb 2013 - July 2013

    Stakeholders Meeting:  08-01-2013

    Model Training:  03-17-2014

    Final Model Report:  September, 2014

Contact Info

How can I get access to the model?
Contact Charles Theobald ( or Neela Sarwar ( to request access to the CHEOPS 2014 model.

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If you have a comment or question on the Catawba model, please contact us at: