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Water Well Data

TWDB maintains three groundwater data sets: TWDB Groundwater Database, Submitted Driller's Reports, and Brackish Resources Aquifer Characterization System (BRACS) Database. Please select the data set of your interest below.

TWDB Groundwater Database (ArcIMS)
Of the 1,000,000 plus water wells drilled in Texas over the past 100 years, more than 130,000 have been inventoried and the data entered into the TWDB groundwater database. State well numbers have been assigned to these based on their location within numbered 7 1/2 minute quadrangles formed by lines of latitude and longitude. The database contains well information including location, depth, well type, owner, driller, construction and completion data, aquifer, water-level and water quality data. "

Submitted Driller's Reports (ArcIMS)
Database created from the online Texas Well Report Submission and Retrieval System (A cooperative TDLR,TWDB system) that registered water-well drillers use to submit their required reports. This system was started 2/5/01 and is optional for the drillers to use. Reports that drillers submit by mail are not included in this database and are available for access at the TCEQ Records Services Department (512-239-0900). At some time in the future, it will be required for registered drillers to file their reports through this online system.


Brackish Resources Aquifer Characterization System (BRACS) Database (ArcIMS)
BRACS is a TWDB program established in 2009 to map and characterize the state’s brackish aquifers in greater detail; build replicable numerical groundwater flow models to estimate aquifer productivity; and develop parameter-screening tools to help communities assess the viability of their brackish groundwater supplies. Data and information (for example, groundwater well and geophysical well log attributes, and water quality) gathered during this effort are being stored and analyzed in an MS Access relational database, and displayed using GIS software. "