These two maps show water levels in wells in the Houston, Texas, area in (1) the Chicot aquifer, spring 1986, and (2) the Evangeline aquifer, spring 1986. Both the Chicot and Evangeline aquifers are composed of several sand layers with different potentiometric surfaces. These maps, however, show approximations of single potentiometric surfaces that represent composite hydraulic heads. (USGS)
Additional publication details
USGS Numbered Series
Approximate altitude of water levels in wells in the Chicot and Evangeline aquifers in the Houston area, Texas, spring 1986
2 maps ;36 x 53 cm., on sheets 43 x 56 cm., folded in envelope 31 x 23 cm.