In Re Distribution of Water to Various Water Rights

HORTON, Justice.

This is an appeal from a district court’s order on petition for judicial review from a final order from the Director of the Idaho Department of Water Resources (Department or IDWR). On appeal, the senior surface water rights holders (Surface Water Coalition or Coalition) 1 challenge the court’s order affirming the methodology established by the Director for determining material injury caused by the pumping of junior groundwater rights holders (Idaho Groundwater Appropriators or Groundwater Appropriators). The Coalition also appeals the court’s failure to require the Director…