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Oklahoma Administrative Code (Last Updated: March 11, 2021) |
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TITLE 300. Grand River Dam Authority |
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Chapter 35. Lake Rules |
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Subchapter 13. Permits for Dikes, Excavations, Dredgings, Erosion Control Devices, Retaining Walls, and Shoreline Stabilization |
SECTION 300:35-13-4. Shoreline stabilization and retaining walls
Latest version.
- (a) GRDA may issue permits allowing adjacent residential landowners to stabilize eroding shorelines on GRDA-owned residential access shoreland. GRDA will determine if shoreline erosion is sufficient to approve the proposed stabilization treatment. No shoreline stabilization activities may be conducted until a permit from GRDA is issued. Shoreline stabilization may include i) the use of biostabilization, ii) the use of riprap to stabilize eroded shorelines, or iii) the use of a retaining wall.(b) Biostabilization of eroded shorelines.(1) Moderate contouring of the bank may be allowed to provide conditions suitable for planting of vegetation.(2) Native vegetation may be planted within the shoreline management zone to help minimize further erosion.(3) Riprap may be allowed along the base of the eroded area to prevent further undercutting of the bank.(c) Use of riprap to stabilize eroded shorelines.(1) The riprap material must be quarry-run stone, natural stone, or other material approved by GRDA.(2) Rubber tires, concrete rubble, or other debris shall not be used to stabilize shorelines.(3) Riprap material must be placed so as to follow the existing contour of the bank.(4) Site preparation must be limited to the work necessary to obtain adequate slope and stability of the riprap material.(d) Use of retaining walls for shoreline stabilization.(1) Retaining walls shall be allowed only where the erosion process is severe and GRDA determines that a retaining wall is the most effective erosion control option.(2) GRDA shall inspect the site of the proposed construction and consider whether the planting of vegetation or the use of riprap would be adequate to control erosion.(3) GRDA shall determine that the proposed construction is needed and would not change the basic contour of the reservoir shoreline.(4) The retaining wall must be constructed of stone, concrete blocks, poured concrete, or other materials acceptable to GRDA. Railroad ties, rubber tires, broken concrete (unless determined by GRDA to be of adequate size and integrity), brick, creosote timbers, and asphalt are not allowed.(5) Reclamation of GRDA land that has been lost to erosion is not allowed.(6) No existing retaining wall shall be repaired or rebuilt without a permit from GRDA. Repairs must be made with approved and acceptable material by GRDA.