Layer Estimates:

Layer: river (ID:0)
Count: 7
Extent:

XMin: -9201539.24891108
YMin: 3475616.30482368
XMax: -9139355.18768805
YMax: 3496714.44295774
Spatial Reference: 102100 (3857)

Layer: Counties (ID:1)
Count: 10
Extent:

XMin: -9269478.67201541
YMin: 3368377.08181288
XMax: -9061071.44581217
YMax: 3581455.86755175
Spatial Reference: 102100 (3857)

Layer: Background (ID:2)
Count: 1
Extent:

XMin: -9204325.91628432
YMin: 3426297.76241096
XMax: -9130582.95467187
YMax: 3498328.76332694
Spatial Reference: 102100 (3857)