Contouring on the Glen Groth farm in Plymouth County, Iowa <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Contour+farming%3B">Contour farming;</a> This photo shows contour field divisions established on a set of terraces. Slopes are 12 ti 17 percent and the terraces are broad based level. Southeast Wildwood Park is in the background. Contour farming saves water and reduces erosion by 50 per cent Cole, Erwin W. - Photographer State Libra;ry of Iowa 1973-06-07 1973-06-07 Plymouth County Soil and Water Conservation District This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). <a title="In Copyright" href="https://rightsstatements.org/page/InC/1.0/?language=en">http://rightsstatements.org/vocab/InC/1.0/unknown</a> jpeg still image NRC-420-13 NRC-420-13 Contoured farmland with farm community nearby <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Contour+farming%3B">Contour farming;</a> State Library of Iowa Plymouth County Soil and Water Conservation District jpg still image Aerial view of contoured land with trees in lower left corner <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Contour+farming%3B">Contour farming;</a> State Library of Iowa Plymouth County Soil and Water Conservation District This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).<a title="In Copyright" href="https://rightsstatements.org/page/InC/1.0/?language=en"> http://rightsstatements.org/vocab/InC/1.0/unknown</a> jpg still image Aerial view of contoured farmland with tractor moving along the rows <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Contour+farming%3B">Contour farming;</a> Vern Denherder's name is on the back State Library of Iowa Plymouth County Soil and Water Conservation District This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). <a title="In Copyright" href="https://rightsstatements.org/page/InC/1.0/?language=en">http://rightsstatements.org/vocab/InC/1.0/unknown</a> jpg still image