ETL 1110-2-569
1 May 05
Figure 1. Severity of seepage as related to upward gradient through top stratum (from
U.S. Army Engineer Waterways Experiment Station 1956, Vol. 1, Figure 47, p. 272)
The observed data recorded within this figure have been reproduced and discussed in numerous
reports since its original publication. From this figure, the 1956 report also reported that the
following general trend shown in Table 1 could be assumed.
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