1. Approximate altitude of water levels in wells in the Chicot and Evangeline aquifers in the Houston area, Texas, Spring 1984 [cartographic material] Yale Public content 1984. 2002-06-01T04:00:00Z. 2023-09-07T03:01:23Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Texas and Houston Region.