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Yellowstone photo album 31, page 81 Yellowstone National Park
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Circa 1936
View series 
Head of gully after treatment, edges of bank have been knocked in upon a brush and grass head check, 1934 Mammoth Cave National Park; National Park Service
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Circa 1934
Gully erosion on Goblin Knob, large gully with double head showing rapid headward progress before treatment Mammoth Cave National Park; National Park Service
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Circa 1935
This scene shows the completed temporary check dams Mammoth Cave National Park; National Park Service
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Circa 1935
Ero surface wash being checked and the soil held by a tree filled parallel to the contours during fire hazard reductions work Mammoth Cave National Park; National Park Service
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Circa 1934
Typical erosion ditch in Katy Pace Valley used in narrative report, 1934 Mammoth Cave National Park; National Park Service
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Circa 1934
Construction of temporary check dams near ky np-4 Mammoth Cave National Park; National Park Service
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Circa 1935
9, some simple check dams constructed on the margin of an old field, work done in connection with forestry work in the woodland in the background Mammoth Cave National Park; National Park Service
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Circa 1934
Erosion work complete, showing wire check dams Mammoth Cave National Park; National Park Service
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Circa 1935
Construction of temporary check dams near ky np-4 Mammoth Cave National Park; National Park Service
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Circa 1935
Slide on north side of Green River Mammoth Cave National Park; National Park Service
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Circa 1935
Small gully on a gentle slope, being partly controlled by vegetation Mammoth Cave National Park; National Park Service
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Circa 1934
Erosion control work at ky np-3 gully no 2 tract no. 124 Mammoth Cave National Park; National Park Service
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Circa 1934
Showing how wire check dams hold the soil Mammoth Cave National Park; National Park Service
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Circa 1935
Ero erosion control in straw valley, height of dam checking water Mammoth Cave National Park; National Park Service
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Circa 1934
Showing gully before the construction of temporary check dams Mammoth Cave National Park; National Park Service
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Circa 1935
Enrollees of ky np-1 constructing temporary dams Mammoth Cave National Park; National Park Service
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Circa 1935
An example of headward erosion, the depth of the gully Mammoth Cave National Park; National Park Service
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Circa 1935
Temporary check dams completed Mammoth Cave National Park; National Park Service
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Circa 1935
View across an abandoned pasture showing depth of intruding gulleys Mammoth Cave National Park; National Park Service
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Circa 1935
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Items per page (20):
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About 400 Items

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