Layer Estimates:

Layer: Cities (ID:0)
Count: 49
Extent:

XMin: -27254.5077999998
YMin: 460919.1489
XMax: 296616.6396
YMax: 664889.239499999
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: Base Map Annotation (ID:1)
Count: 10357
Extent:

XMin: -56608.1430000002
YMin: 459557.1973
XMax: 312415.4584
YMax: 717719.1428
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: River Rapids (ID:5)
Count: 110
Extent:

XMin: 67413.4962999998
YMin: 527925.767000001
XMax: 241456.668
YMax: 649728.7202
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: River Miles (ID:2)
Count: 297
Extent:

XMin: 27461.2615
YMin: 527901.1973
XMax: 252187.1637
YMax: 657294.7784
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: River Mile Tenths (ID:3)
Count: 2978
Extent:

XMin: 26870.4402000001
YMin: 527895.362
XMax: 252313.6596
YMax: 658454.0395
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: Colorado River (ID:4)
Count: 1
Extent:

XMin: 26820.0225999998
YMin: 527895.116699999
XMax: 252329.5245
YMax: 658502.7279
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: Roads (ID:6)
Count: 515
Extent:

XMin: -56672.6617000001
YMin: 459473.0956
XMax: 312523.8427
YMax: 717730.1384
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: Tributary Labels (ID:7)
Count: 160
Extent:

XMin: 32722.2287999997
YMin: 529364.775
XMax: 250708.4806
YMax: 655651.663899999
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)

Layer: Major Tributaries (ID:8)
Count: 39
Extent:

XMin: 30941.4753
YMin: 387533.4001
XMax: 449263.405
YMax: 715991.524700001
Spatial Reference: 102988 (6404)
Vertical Spatial Reference: 115755 (115755)