Photograph of irrigation on Site 28, Cavalry Watershed. Water flowing from supply ditch through siphon tubes onto corrugated land. Land is being watered prior to seeding to rye and vetch. Two detention reservoirs are visible in background. Land was leveled woth a carry-all and floated with a land plane. Loyd Lundy is setting siphon tube. Dave Reimer, background, is checking distibution of water.