Produced Water vs. Seismic activity chart (IMAGE) University of Texas at Austin Caption Comparison between monthly rates of produced water disposal (SWD) and the monthly number of seismic events with M ? 3.0 in the Oklahoma area of interest. The produced water disposal volumes are in black and the number of seismic events are in red. The labels on the chart indicate the location and magnitude of seismic events with M ? 5.0 Credit Scanlon et al. Usage Restrictions Include photo credit 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.