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A digital model for simulation of ground-water hydrology in the Houston area, Texas

Limited Printing Report 103

Texas Department of Water Resources U.S. Geological Survey city of Houston
By:
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Abstract

This report documents the construction and calibration of a digital model for the simulation of hydrologic conditions in the Chicot and Evangeline aquifers in the Houston area of southeastern Texas. The model is a five-layer finite-difference model, with a grid pattern of 63 x 67 nodes representing an area of 27,000 square miles, for simulation of three- dimensional ground-water flow. The hydrologic properties and processes modeled were ground-water withdrawals, transmissivities, storage coefficients of the aquifers and clays, quantity of water derived from storage in the clays, and vertical hydraulic conductivity and vertical leakage. The model, which simulates water-level declines, changes in storage in the clay layers, and land-surface subsidence, was calibrated by use of historical records from 1890 to 1975. It is very sensitive to variations in transmissivities and to variations in water-table and artesian storage. It is less sensitive to variations in clay storage.

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Additional Publication Details

Publication type:
Report
Publication Subtype:
Other Government Series
Title:
A digital model for simulation of ground-water hydrology in the Houston area, Texas
Series title:
Limited Printing Report
Series number:
103
Year Published:
1979
Language:
English
Publisher:
Texas Department of Water Resources
Publisher location:
Austin, TX
Contributing office(s):
Water Resources Program
Description:
v, 27, I-1, II-1, III-73 p.
Country:
United States
State:
Texas