TM 5-818-5/AFM 88-5, Chap 6/NAVFAC P-418
(Modified from "Foundation Engineering, "G. A. Leonards, ed., 1962, McGraw-Hill
Book Company. Used with permission of McGraw-Hill Book Company.)
Figure 4-14. Drawdown factors for fully penetrating circular, rectangular, and two-line well arrays; circular source; artesian and gravity flows.
4-15