NRS 540A.030
Boundaries of region.
1.
In each county to which this chapter applies, except as otherwise provided in subsections 2 and 3, the region within which water is to be managed, and with respect to which plans for its use are to be made, pursuant to this chapter is the entire county except:(a)
Any land within the region defined by NRS 277.200, the Tahoe Regional Planning Compact; and(b)
Lands located within any Indian reservation or Indian colony which are held in trust by the United States.2.
The board may exclude from the region any land which it determines is unsuitable for inclusion because of its remoteness from the sources of supply managed pursuant to this chapter or because it lies within a separate hydrologic basin neither affecting nor affected by conditions within the remainder of the region.3.
The board may include within the region an area otherwise excluded if it finds that the land requires alleviation of the effect of flooding or drainage of storm waters or another benefit from planning or management performed in the region.
Source:
Section 540A.030 — Boundaries of region., https://www.leg.state.nv.us/NRS/NRS-540A.html#NRS540ASec030.