Photograph of "Deep scouring in lister ridges running up and down the slope. Taken after a heavy rain. Notice the silting at the base of the slope. This soil was washed from the furrows immediately above."

Photograph of a spreader ditch with masonry spreaders torn out by flood waters. Picture taken shortly after six inch rain fell in one night. Notice gullying in spreader and how the water flows out of the banks fo the ditch. OK-5142.

Photograph of flood damage to a spreader ditch. Shows some bermuda grass stripping still in place and shows overfall at masonry spreader. Taken shortly aftersix inch rain fall in one night. OK-5136.

Photograph of flood damage to a spreader ditch. Shows masonry spreaders torn completely out by flood waters. Taken shortly after a six inch rain in one night. OK-5135.

Photograph of severe sheet and slight gully erosion on an unterraced field after a heavy rain. Notice how all the soil which has been loosened by the plow was taken out of the channel at the bottom of the drainage, and how the small gullies in general followed the direction of the lister plow furrows up and down the slope. OK-5154.

Photograph of effects of water concentration through drainage which should have been left in natural sod. Picture taken after a 6 inch rain in one night. This picture shows how the water washed out all the soil loosened by the plow. The plow marks are quite visible. OK-5141.

Photograph of the Paul Peeler farm. A spreader ditch with masonry spreaders torn out by flood waters. The picture was taken after a 6-inch rain-fall in one night. Note the gullying in the spreader and how the water cut the banks of the ditch. OK-5142.

Photograph of a break in newly constructed terrace showing overfall which developed above it from water coming down from breaks in higher terraces. The break here is at a fill which was not built high enough. Photo was taken shortly after a quick 6-inch rain. OK-5169.

Photograph of a specially-constructed grader made from an old road maintainer. It has no front wheels and hitches to the tractor for frontal support. The grader and tractor are equipped with lights and is now working three eight-hour shifts a day. The graderfixed up in this way is very efficient. OK-5167.

Photograph of a specially-constructed grader made from an old road maintainer. This grader has no front wheels and hitches directly to the tractor for frontal support. The grader fixed up in this way is very efficient. The grader and tractor are equipped with electric lights for night work and is being run three eight-hour shifts a day. OK-5166.

Photograph of a contour furrowed pasture on the Miles Robbins farm. The back of the photograph proclaims, "50 acre pasture contour furrowed."

Photograph of a farm pond dam showing water marks near crest where a 4-inch rain filled pond (04-30-36). On May 4th, another 4-inch rain added sufficient pressure so that the seepage through a gopher hole caused the collapse of the dam. The gopher hole was being treated and probably would have been healed if the additional rain had not caused the additional pressure at just that time. OK-5183.

Photograph of the aftermath of a six-inch rain, which broke the Elk City Reservoir Dam. Notice the concrete debris in the foreground. The back of the photograph proclaims, “View of broken dam from downstream side. A six inch rain in one night caused the dam to overtop its entire length and finally break. Notice the huge pieces of concrete from the core wall and facing that were carried down by the water. A large bridge washed through this break. This dam and reservoir, which cost $350,000, silted in 48% in nine years and was soon to be abandoned because its storage capacity was reduced too much for it to be relied upon for city water supply.”

Photograph of an extremely large gully whch has a large diversion ditch at its head.

Photograph of many large breaks in new terraces caused by quick 4 1/2 inch rain on April 30, 1936. Notice scouring in foreground. These are level terraces and some of the breaks are up to 200 feet long. OK-5173.

Photograph of a view of a broken dam from the downstream side. A six inch rain in one night caused the dam to overtop its entire length and finally break. Notice the huge pieces of concrete from the core wall. As facing the wall, they were carried down by water. A large bridge washed through this break. This dam and resevoir, which cost $350,000, silted in 48% in nine years and was soon to be abandoned because its storage capacity was reduced too much for it to be relied upon for the city water supply. OK-5144.

Photograph of an extremely large gully which has a large diversion ditch at its head. OK-5199.

Photograph of a farm pond about 25 feet deep. This pond has a rip-rapped dam. There is a silting basin above pond so that it will be of long life. OK-5192.

Photograph showing wind carrying silt onto a clean, cultivated field. Notice how the wind picks up the soil and carries it higher the further it travels. Also notice that the soil is not picked up until the wind has had a chance to gather momentum close to the ground. The soil in the foreground is not being carried as the end of the field is near, and the fence and vegetation act as a windbreak. This wind erosion is a serious problem in western Oklahoma, Kansas and southwestern Nebraska. OK-5123.

Photograph of blasting out rock to be used in lime crusher to supply farmers with limestone fertilizer. Note the lime crusher, the pile of rock and the foreman in charge of the blasting operation.

Photograph of a strip of alfalfa, a terrace, a strip of oats and corn planted on the contour in strips. OK-5212.

Photograph of oats and cotton drilled on contour and terraces on the Frank DeVorak farm. The back of the photograph proclaims, "Oats drilled on contour in a strip and on the terraces and between two strips of cotton, which is also planted on the contour."

Photograph of the J. M. Anthis farm, which shows, "Cotton, oats and corn planted on the contour in strips in a gently sloping field without the use of level terraces."

Photograph of a field on the Christine Taylor farm stripped cropped on the contours with Sudan grass for hay and cotton. A house is in the background. The back of the photograph proclaims, "A field stripped cropped on the contour with Sudan grass for hay and cotton."