10 IGA priorities for maintaining sites
where IncrTSS in IGA is equal to or greater than 1.38e+09 MetricTons/Yr (50th percentile)
33 IGA priorities for adding sites
where absolute value for IGA or HUC12 is equal to or greater than 3.57e+08 MetricTons/Yr (2 x mean IGA absolute value)
and 1454 IGA priorities (not plotted, refer to map) without a long-term mean value and upstream of an IGA meeting the criteria