Layer Estimates:

Layer: San Mateo County Storm Drains (ID:0)
Count: 9072
Extent:

XMin: 541994.327085293
YMin: 4130571.30066738
XMax: 578619.993435927
YMax: 4174450.62365503
Spatial Reference: 26910 (26910)

Layer: San Mateo County Outfalls (ID:1)
Count: 380
Extent:

XMin: 543360.08915951
YMin: 4142027.90768578
XMax: 577449.522046657
YMax: 4174399.76474114
Spatial Reference: 26910 (26910)

Layer: San Mateo County Catchments (ID:2)
Count: 278
Extent:

XMin: 542844.887
YMin: 4141393.5582
XMax: 577624.8479
YMax: 4173726.4019
Spatial Reference: 26910 (26910)