IBT SUBBASIN/TMDL TRANSPORT FACTOR.

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View NCGA Bill Details(link is external)2025-2026 Session
Senate Bill 605 (Public) Filed Tuesday, March 25, 2025
AN ACT TO ELIMINATE CERTAIN SUBBASIN DESIGNATIONS AND REMOVE THE REQUIREMENT FOR AN INTERBASIN TRANSFER CERTIFICATE FOR WATER TRANSFERS BETWEEN THOSE CERTAIN SUBBASINS WITHIN THE SAME MAJOR RIVER BASIN AND TO REVISE 2020 FARM ACT TMDL TRANSPORT FACTOR CALCULATION APPLICABILITY.
Intro. by Sawrey, P. Newton.

Status: Ref To Com On Rules, Calendar, and Operations of the House (House action) (May 8 2025)

SOG comments (1):

Long title change

Previous title was AN ACT TO ELIMINATE SUBBASIN DESIGNATIONS AND REMOVE THE REQUIREMENT FOR AN INTERBASIN TRANSFER CERTIFICATE FOR WATER TRANSFERS BETWEEN SUBBASINS WITHIN THE SAME MAJOR RIVER BASIN AND TO REVISE 2020 FARM ACT TMDL TRANSPORT FACTOR CALCULATION APPLICABILITY.

S 605

Bill Summaries:

  • Summary date: May 7 2025 - View Summary

    Senate amendment to the 2nd edition makes the following changes.

    Adds to the proposed changes to Section 15, SL 2020-18, as amended, to allow the Environmental Management Commission (Commission) to use the Department of Environmental Quality's (Department) watershed modeling for the Neuse River Basin to adopt new transport zones and delivery factors by rule once the Department has completed the watershed modeling. Eliminates the requirement for the Department to provide the Commission a list of qualified professionals from which the Commission can select at least two to validate the completed watershed modeling before the Department can use the modeling to adopt the new transport zones and delivery factors.


  • Summary date: May 6 2025 - View Summary

    Senate committee substitute to the 1st edition makes the following changes.

    Amends the act's title.

    Adds legislative findings regarding the elimination of the Haw River, Deep River, and Contentnea Creek subbasin designations.

    Discards the first edition’s combinations of rivers into larger basins in GS 143-215.22G, with the exception of the inclusion of the Haw River (2-1) and Deep River (2-2) in the Cape Fear River basin, and the inclusion of Contentnea Creek (10-2) into the Neuse River basin.


  • Summary date: Mar 28 2025 - View Summary

    Removes the designation of subbasins in the list of river basin designations from the "Major River Basins and Sub-basins in North Carolina" map in GS 143-215.22G. Amends subdivision (1b) to combine subbasins within the primary river, i.e. Cape Fear River including Haw River, Deep River, South River, and Northeast Cape Fear River. Applies to water withdrawals or transfers initiated on or after the effective date of the act.

    Amends Section 15 of SL 2020-18 (Specify that the TMDL Transport Factor Applies when Offsetting Certain Permitted Wastewater Discharges) to allow the TMDL transport factor exceptions from subsection (a) of that bill to apply to all wastewater discharge permit applications for local governments in the Neuse River basin.