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Central Wyoming Regional Water System (Casper), the Town of Mills, and the Town of Douglas systems utilize both surface water and groundwater. These types of systems are referred to as ôconjunctive useö systems. All three systems use surface water from the North Platte River. The Central Wyoming Regional Water System (Casper) uses groundwater from 20 Quaternary Aquifer wells. The Town of Mills uses groundwater from seven Quaternary Aquifer wells. The Town of Douglas uses groundwater from one spring and one well. The following table summarizes the conjunctive water usage within the Pathfinder to Guernsey subbasin.
Summary of Conjunctive Water Usage for Community Public Water Systems in the Pathfinder to Guernsey subbasin
County |
Public water system identification number |
Name |
Population served |
Source |
Average daily use (gallons per day) |
Peak daily use (gallons per day) |
| Natrona |
WY5600009 |
Central Wyoming Regional Water System (Casper) |
53,412 |
20 Quaternary Aquifer wells, North Platte River |
10,300,000 |
28,000,000 |
| Natrona |
WY5600036 |
Town of Mills |
5,745 |
7 Quaternary Aquifer wells, North Platte River |
861,750 |
2,500,000 |
| Converse |
WY5600137 |
Town of Douglas |
5,800 |
1 spring, 1 well, North Platte River |
1,489,085 |
3,866,500 |
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Totals |
64,957 |
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12,650,835 |
34,366,500 |
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