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Digging holes and setting posts preparatory to attaching wire as part of the erosion control activities, np-4 Mammoth Cave National Park; National Park Service
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Circa 1935
Showing the result of erosion before check dam construction Mammoth Cave National Park; National Park Service
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Circa 1935
Ero small check dam in a gully in a valley meadow soil deposit below check dam due to low gradient Mammoth Cave National Park; National Park Service
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Circa 1934
Gully after check dams have been installed, Foreman Dan Meredith and Cultural Foreman Leslie Randall in picture Mammoth Cave National Park; National Park Service
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Circa 1935
Showing the result of erosion before check dam construction Mammoth Cave National Park; National Park Service
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Circa 1935
Cedar planted in old quarry floor by np-2 tree planting (Stockholm quarry) Mammoth Cave National Park; National Park Service
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Circa 1935
Gully erosion adjacent to road project # 42 Mammoth Cave National Park; National Park Service
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Circa 1934
Showing the construction of the temporary check dams Mammoth Cave National Park; National Park Service
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Circa 1935
Series of temporary check dams in a large gully on Goblin Knob, head of gully has been controlled by a mattress Mammoth Cave National Park; National Park Service
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Circa 1935
Completed temporary check dams near Frozen Niagara entrance, Project Supt. Richardson in picture Mammoth Cave National Park; National Park Service
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Circa 1935
Planting black locust on the banks of a small gully Mammoth Cave National Park; National Park Service
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Circa 1935
The result of erosion on Goblin Knob Mammoth Cave National Park; National Park Service
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Circa 1935
Simple check dams of woven fence wire and staked and sunk below the gully bottom are effective in erosion control Mammoth Cave National Park; National Park Service
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Circa 1934
Slide on north Green River hill Mammoth Cave National Park; National Park Service
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Circa 1934
Preliminary steps constructing a temporary wire dam across a narrow gully, post set ready for fence wire Mammoth Cave National Park; National Park Service
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Circa 1935
Ero check dams frequency in a long gully, seal material functioning very well Mammoth Cave National Park; National Park Service
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Circa 1934
Slide on north Green River hill Mammoth Cave National Park; National Park Service
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Circa 1934
Enrollees of ky np-1 constructing temporary dams Mammoth Cave National Park; National Park Service
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Circa 1935
Completed temporary check dams near Frozen Niagara entrance, Project Supt. Richardson in picture Mammoth Cave National Park; National Park Service
View on map 
Circa 1935
Simple check dams of woven fence wire and staked and sunk below the gully bottom are effective in erosion control Mammoth Cave National Park; National Park Service
View on map 
Circa 1934
Sort (date)
Items per page (20):
Page 8 of at least 21
About 400 Items

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