Idaho Code § 42-1604

For the purposes of this chapter, an artesian well is defined as any well, as defined in subsection (b) of section 42-230, Idaho Code, which encounters pressurized ground water or low temperature geothermal resource under sufficient head to rise above the elevation at which it was first encountered whether or not the fluid flows at land surface. If the fluid level stands above land surface, the well is a flowing artesian well.