S.C. Code § 49-19-110
Drainage districts providing for the storage, conservation, utilization and disposal of water by authority of Section 49-19-100 may cooperate and enter into agreements with, and receive financial and other assistance from State agencies and political subdivisions of the State, including soil and water conservation districts as authorized by Chapter 9 of Title 48, and other organizations created under State laws, and the government of the United States and agencies thereof to carry out the purposes of Section 49-19-100, and may enter into agreements with and accept contributions from private landowners for the purposes of Section 49-19-100. Any action taken by the drainage districts regarding the storage, conservation, utilization and disposal of water within the districts shall be subject to the approval of the local soil and water conservation district.
S.C. Code § 49-19-110