The South Dakota environment and water resources trust fund is hereby established. A separate trust subfund shall be created within the South Dakota water and environment fund established pursuant to § 46A-1-60. The purpose for which the trust is established is to provide a perpetual source of revenue to serve all of the purposes for which funds may be expended from the water and environment fund. The principal of the trust fund shall be conserved in perpetuity or until the Legislature shall otherwise provide and may not be expended. Interest earned on the fund shall accrue to the water and environment fund and be disbursed in conformance with § 46A-1-61.
SDCL 46A-1-82