Erosion on Van Roekel farm 3 miles South of Monroe in Marion County, Iowa. No grassed waterway. Oats planted up and down hill. Silt fan formed below 2 foot gully. 20 tons soil lost per acre.
Erosion on Mike Murphy's estate 5 miles East of Pleasantville in Marion County, Iowa. Silting and erosion from heavy rain on a 4% slope. Estate is maintained by John Flahive.
Erosion on Joe M. Johnston's farm 10 miles NW of Knoxville in Marion County, Iowa. Every other row of corn washed out of this 40-acre field. Worked and planted up and down hill 30 to 40 tons of soil loss per acre.
