Major aquifers, well yields, number of index wells and date of last water-level sweep are shown in Table 6.5-3.  Figure 6.5-6 shows water-level change between 1990-1991 and 2003-2004.  Figure 6.5-7 contains the hydrograph for the selected well shown on Figure 6.5-6.  A description of aquifer data sources and methods as well as well data sources and methods, including water-level changes and well yields are found in Volume 1, Appendix A. 

Major Aquifers

• Refer to Table 6.5-3 and Figure 6.5-6.

• The major aquifer in the basin is the recent stream alluvium.

• Almost all of the basin geology consists of consolidated crystalline and sedimentary rock.

• Data on natural recharge, groundwater in storage and groundwater flow direction is not available for this basin. 

Well Yields

• Refer to Table 6.5-3
• One source of well yield information, based on 17 reported wells, indicates that the median well yield in this basin is five gallons per minute.

Water Level

• Refer to Figure 6.5-6. Water levels are shown for wells measured in 2003-2004.
• There are no index wells in this basin.
• Water level information is available for one well in this basin, with a depth to water of 960 feet.  A hydrograph for this well is shown in Figure 6.5-7.

 

Click to view Table 6.5-3 Groundwater Conditions in the

Shivwits Plateau Basin

Click to view Figure 6.5-6 Shivwits Plateau Basin Groundwater Conditions

Click to view Figure 6.5-7 Shivwits Plateau Basin Hydrographs Showing Depth to Water in Selected Wells