Average HUC12 severity-weighted vulnerability (natural sensitivity x stressor exposure) in each play to most common potential stressors associated with UOG from Souther et al.

2014. Plays were ranked from 1(low) to 6 (high) based on their HUC12 means relative to the across-play means from Table 3 and then selected exposure variables were multiplied by author-derived severity scores that ranged from 1 (least severe) to 3 (most severe). Summed sensitivity ranks were multiplied by severity-weighted exposure scores to derive a total. See Paukert et al. 2011 for a more detailed discussion of this method. Severity scores are in parentheses and sensitivity ranks are bold.