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.
Database created from the online
Texas Well Report Submission and Retrieval System (A cooperative
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
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.