Designated Basins in Nye County
Nye County's Hydrographic Regions, Basins, and Sub-basins are listed on the Nevada Division of Water Resources website NDWR. There are 44 basins in Nye County, of which 27 are shared with other Nevada counties and 2 are shared with California. Twelve of the County's 44 basins are "designated". By basin number, the designated basins are:
Upper Reese River Valley
Big Smoky Valley / Tonopah Flat
Big Smoky Valley / Northern Part
Stone Cabin Valley
Indian Springs Valley
However, designation of a water basin by the State Engineer does not necessarily mean that the groundwater resources are being depleted, only that the appropriated water rights exceed the estimated perennial yield. Actual groundwater use may be considerably less than perennial yield, which is the case for most of the above basins in Nye County (2004 Nye County Water Resources Plan).
The NDWR map titled Administrative Groundwater Basins displays the designation status for the groundwater basins in Nevada. This map is a useful tool to generally determine the basin boundaries and where potential impediments to groundwater development may exist. Please note that the associated State Engineer's orders and rulings should be examined for a complete understanding of the management issues and water availability within a basin.
State Engineer's order(s) do not define any administrative controls.
Designated - Irrigation Denied
State Engineer's order(s) state that irrigation is not a preferred use in these basins and applications for new irrigation appropriations will be denied.
Designated - Preferred Uses
State Engineer's order(s) list certain types of uses as preferred in these basins, and quantity restrictions may be placed on these preferred uses.
Designated - Preferred Uses;
State Engineer's order(s) list certain types of uses as preferred in these basins. Quantity restrictions may be placed on these preferred uses. State Engineer's order(s) also state that irrigation is not a preferred use in these basins and applications for new irrigation appropriations will be denied. Other uses may also be listed as denied.