784 IGA priorities for maintaining sites
where PPT in IGA is equal to or greater than 1.63 KM 3/Yr (50th percentile)
1005 IGA priorities for adding sites
34 HUC12 priorities for adding sites
where absolute value for IGA or HUC12 is equal to or greater than 1.39 KM 3/Yr (2 x mean IGA absolute value)