Layer Estimates:

Layer: SPK_Major_Rivers (ID:0)
Count: 168
Extent:

XMin: -123.200373682476
YMin: 35.2720083704924
XMax: -105.747143616146
YMax: 43.3701130130246
Spatial Reference: 4269 (4269)

Layer: District Reservoirs (ID:1)
Count: 53
Extent:

XMin: -123.18459100627
YMin: 35.6415084311692
XMax: -106.998181818236
YMax: 41.2929000002349
Spatial Reference: 4269 (4269)