Layer Estimates:

Layer: Aquatic_Barrier_Prioritization_Dams_v3210 (ID:0)
Count: 558203
Extent:

XMin: -176.687319999747
YMin: 17.6898210000086
XMax: -64.6204199995736
YMax: 71.2666699999577
Spatial Reference: 4326 (4326)