A densely developed region

Four counties atop the Barnett Shale – Denton, Johnson, Tarrant and Wise – have the most natural-gas production in the region. Shown here are the gas and oil wells in those counties, along with the infrastructure that followed, such as compressor stations that move gas through pipelines.

  • Red: Oil and gas wells
  • Blue: Gas or oil infrastructure considered by the state to be “point sources,” or more significant sources of air pollutants

Source: Railroad Commission of Texas and the Texas Commission on Environmental Quality