For the time actually and necessarily employed in the duties of their office and in attending and returning from the sessions of the board of directors, the district directors may receive travel and subsistence expense at the rates set pursuant to chapter 3-9. In addition, per diem, not to exceed the Board of Water and Natural Resources' per diem, may be paid each member for each day of actual service for attending meetings, hearings, or investigations of the irrigation district board.
SDCL 46A-4-47