691 IGA priorities for maintaining sites
where ET in IGA is equal to or greater than 1.19 KM 3/Yr (50th percentile)
1008 IGA priorities for adding sites
45 HUC12 priorities for adding sites
where absolute value for IGA or HUC12 is equal to or greater than 0.921 KM 3/Yr (2 x mean IGA absolute value)