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Home > Using Geologic Maps > Reading Significant Sand and Gravel Aquifer Maps > Figure 2 > Figure 2b



Figure 2b. Portion of the Gray quadrangle, Surficial Geology map series. Notice how closely the aquifer boundary follows the sand and gravel formations (Pmdeg, Pmdgm, Pgf) shown on the surficial geology map. Refer to Figure 2a and Figure 2c for more information on aquifer boundaries.

Last updated on October 6, 2005