Municipal use wells
Figure 8-1 shows the distribution of WSEO permits for municipal and Tribal public use in the WBRB. Consistent with Tables 8-6 and 8-7, the depth vs. yield tables on Figure 8-1 show 133 WSEO permits of which 13 were installed from January 2000 through June 2009. Most municipal permits are for yields ranging to 500 gpm, distributed across depths ranging to more than 1000 feet. Most permits since 2000 are for depths greater than 1,000 feet and for yields greater than 1,000 gpm (5) and for 25 gpm or less (5). No municipal-use permits were included in the MBMG data.
Tables 8-9 and 8-10 distinguish the 130 municipal-use groundwater permits on file with the WSEO by status. Tables 8-9 summarizes selected information on 44 municipal-use permits that have been fully adjudicated. Three of the permits in Tables 8-9 are for multiple uses. Most of the permits in Tables 8-9 include information on yield, well depth, depth of the producing interval, and the producing hydrogeologic unit. As fully adjudicated groundwater appropriations by definition indicate that the well has been inspected, the information in Tables 8-9 (for which information on producing interval was obtained from WDEQ SWAP data) is presumed to be fairly accurate. The wells in Tables 8-9 produce water from alluvial aquifers, the Wind River aquifer in the (Wind River Basin), or the Madison-Bighorn aquifer in the Bighorn Basin and corresponding Paleozoic aquifer system units in the WRB (Plates II and III).
Table 8-10 summarizes the same information as that in Tables 8-9 for 83 incomplete, cancelled, abandoned, and undefined WSEO permits. Fifteen of the permits in Table 8-10 are for multiple uses. While cancelled permits may or may not be associated with a completed well, abandoned status generally refers to a previously existing well. Most of the Table 8-10 permits include yield and well depth; however, only fifteen include the producing hydrogeologic unit (alluvial aquifers, the Wind River aquifer, and the Madison-Bighorn aquifer). Permits with the most information, especially those that include the depth of the producing interval (which is generally provided by the well owner after the well has been completed) are most likely to be associated with completed wells and may provide actual use volume.
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