The interstate stream commission shall annually expend from the money appropriated, within the money actually available and within the budget submitted and approved, in accordance with the provisions of Sections6-3-1 through 6-3-22 NMSA 1978, such sum as may be necessary for the improvement of the Rio Grande in this state, and increasing the surface flow of water in the river, and in accordance with the plan submitted by the commission.
NMS § 72-14-5