Layer Estimates:

Layer: HUC 2s (ID:3)
Count: 7
Extent:

XMin: -13904051.523
YMin: 2856042.5548
XMax: -10031469.8967
YMax: 6960953.6853
Spatial Reference: 102100 (3857)

Layer: HUC 10s (ID:4)
Count: 523
Extent:

XMin: -12504368.5028
YMin: 4240022.3042
XMax: -11758279.3608
YMax: 5381054.5179
Spatial Reference: 102100 (3857)