300 dpi: (d2404-1.jpg)
640 pixels wide: (d2404-1.jpg)
![]() Image Number D2404-1 |
A farmer’s subsurface drain pipe. Subsurface drainage may account for 50 percent of the stream flow in midwestern watersheds.
Photo by Peggy Greb.
300 dpi: (d2404-1.jpg)
640 pixels wide: (d2404-1.jpg)
![]() Image Number D2404-1 |
A farmer’s subsurface drain pipe. Subsurface drainage may account for 50 percent of the stream flow in midwestern watersheds.
Photo by Peggy Greb.