Northwest Houston Fault Line Map (IMAGE) University of Houston Caption A large section of northwestern Harris County is sinking rapidly, according to a University of Houston geologist who has analyzed GPS data measuring ground elevation in the area. Credit Shuhab Khan Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.