Layer Estimates:

Layer: Historic Channel: 1997 (ID:0)
Count: 79
Extent:

XMin: -12464908.0369459
YMin: 4917598.07030902
XMax: -12455664.5630511
YMax: 4997101.13605159
Spatial Reference: 102100 (3857)

Layer: Historic Channel: 1992 (ID:1)
Count: 33
Extent:

XMin: -12464900.5877778
YMin: 4975185.3448323
XMax: -12458811.6786069
YMax: 4997161.48141573
Spatial Reference: 102100 (3857)

Layer: Historic Channel: 1963 (ID:2)
Count: 43
Extent:

XMin: -12465611.4596281
YMin: 4917756.68180008
XMax: -12455663.7449266
YMax: 4994261.23995296
Spatial Reference: 102100 (3857)

Layer: Historic Channel: 1937 (ID:3)
Count: 87
Extent:

XMin: -12464702.1945909
YMin: 4923981.40822861
XMax: -12455892.9084712
YMax: 4997690.81852363
Spatial Reference: 102100 (3857)

Layer: Historic Channel: 1856 (ID:4)
Count: 7
Extent:

XMin: -12464579.5010908
YMin: 4918208.19099158
XMax: -12455736.7420893
YMax: 4999709.78626131
Spatial Reference: 102100 (3857)