Q10.) Consider the distance between the pumped well and the observation well, the pumping rate and duration, and the amount and rate of drawdown. Estimate what the aquifer conditions might be.

Q12.) Overlap your data plot onto the theiss curve. Describe the fit.

Q13.) Transmissitivity

Q14.) Storage

Q15.) Kh

Q16.) Kv

Q17.) Describe the aquifer.

09 ) Describe the aquifer. Problem 2. An observation well is 73 ft from a well pumping at a constant rate of 1080 gpm. The following drawdowns were measured. Drawdown (It) 0.12 .26 Time (min) 0.16 .34 .58 1.00 1.50 3.0 6.0 10 Drawdown (R) 1.06 1.17 1.31 1.65 2.09 2.27 2.59 Time (min) 20 40 100 300 800 1200 2500 .78 .94 .99 1.02 Q10 (2) Considering the separation of the wells, the pumping rate, and the variation of drawdown with time, estimate what the aquifer conditions might be (b) Plot the data, log s versus log t. t, minutes 10-4 --> 103 s, ft, .01 to 10 9 Q12 (c) Overlay your data plot onto the Theis-type curve (Fig. 9.1). Describe the fit. (d) (e) If you look at the type curves in Figures 10.2 and 10.3, you should be able to recognize this curve shape, at which point you can determine the aquifer constants Q13 T gpd/ft B Wu). Q14 S 1/u (1) From the secondary curves, you can also derive additional information about the anisotropy of the aquifer. If the aquifer is 40 ft thick, describe the anisotropy. Q15 km gpd/ft2 gpd/ft2 Q16 K, Q17 (8) Describe the aquifer. Problem 3. The drawdown data here are from an observation well 100 ft from a pumping well. Drawdown () Time (min) .03 30 .10 40 50 .20 60 22 70 26 80 30 90 35 100 .42 120 50 140 .65 200 .78 260 90 350 1.02 410 1.20 1.50 700 1.82 2.15 1500 2.42 2000 2.70 2500 3.30 4000 4.20 8000 500 1000 (a) Q18 (b) Plot the data, logs versus log t. t, minutes 10 --> --> 10 s, ft, .01 to 10 1