Report 198 By Howard D. Taylor | February 1976

• Report 198 (Part A) - Water-Level and Water-Quality Data from Observation Wells in Northeast Texas
• Report 198 (Part B) - Water-Level and Water-Quality Data from Observation Wells in Northeast Texas
• Map showing Approximate Altitude of thePotentiometric Surface of the Twin Mountains Formation in Dallas, Tarrant, and Parts of Surrounding Counties, 1972

Note that this fold out map, scanned separately, takes up pages 20-22 in the report.