Eudora is served by a single well that pumps at a rate of 0.016 m3/s. They anticipate the need for a pumping rate of 0.025 m3/s. They would like to use the current well and replace the pump with a higher capacity pump. The artesian aquifer is 10 m thick with a piezometric surface 40 m above the bottom confining layer. The aquifer is a medium sand. After 300 days of pumping, the drawdown at a nonpumping well 200 m from the pumping well is 1 m. The pumping well is 1 m in diameter. Assuming a typical hydraulic conductivity for medium sand, determine the maximum allowable sustained pumping rate.
Hoko River near Sekiu, WA | ||||||||||||
| Year | Jan | Feb | Mar | Apr | May | June | July | Aug | Sept | Oct | Nov | Dec |
| 1963 | 12.1 | 15 | 8.55 | 9.09 | 5.78 | 1.28 | 2.59 | 1.11 | 0.81 | 13.3 | 26.1 | 20.3 |
| 1964 | 27.3 | 12.2 | 18.0 | 8.21 | 4.08 | 3.62 | 4.53 | 2.44 | 4.28 | 7.67 | 13.3 | 14.7 |
| 1965 | 27.4 | 27.3 | 5.01 | 5.61 | 6.68 | 1.38 | 0.705 | 0.83 | 0.81 | 7.31 | 16.8 | 19.6 |
| 1966 | 29.8 | 11.3 | 17.6 | 5.18 | 2.67 | 2.1 | 1.85 | 0.986 | 1.54 | 10.3 | 17.0 | 39.0 |
| 1967 | 35.6 | 26.8 | 18.5 | 6.51 | 3.43 | 1.46 | 0.623 | 0.413 | 0.937 | 25.7 | 14.2 | 27.8 |
| 1968 | 34.2 | 22.4 | 15.7 | 9.2 | 3.68 | 2.65 | 1.72 | 1.55 | 9.12 | 16.8 | 16.5 | 25.2 |
| 1969 | 17.2 | 18.5 | 12.9 | 12.8 | 3.74 | 2.23 | 1.19 | 0.81 | 6.15 | 7.84 | 9.15 | 15.9 |
| 1970 | 17.3 | 12.1 | 8.5 | 17.7 | 3.85 | 1.32 | 0.932 | 0.708 | 4.22 | 7.96 | 13.9 | 25.4 |
| 1971 | 32.7 | 21.0 | 21.1 | 8.13 | 3.43 | 2.83 | 1.83 | 0.932 | 2.22 | 10.7 | 22.7 | 22.0 |
| 1972 | 27.4 | 26.9 | 25.4 | 14.6 | 3.0 | 1.0 | 5.32 | 0.841 | 2.0 | 1.14 | 11.8 | 37.8 |
| 1973 | 28.0 | 9.23 | 11.3 | 4.13 | 5.3 | 4.93 | 1.63 | 0.736 | 0.81 | 13.1 | 29.8 | 31.5 |
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