Layer Estimates:

Layer: mv_major_river_ln (ID:0)
Count: 7979
Extent:

XMin: -18819353.8223797
YMin: 7270750.56821228
XMax: -13532949.3606434
YMax: 11294856.8557811
Spatial Reference: 102100 (3857)

Layer: mv_major_river_py (ID:1)
Count: 2251
Extent:

XMin: -18712652.9182767
YMin: 7753936.87016895
XMax: -15336814.199588
YMax: 11294856.8557474
Spatial Reference: 102100 (3857)