Iowa Heritage Digital Collections
State Library of Iowa

Browse Items (1827 total)

Water erosion in Colony Township; Delaware County, Iowa.

Water erosion in Colony Township; Delaware County, Iowa.

Water erosion in Colony Township; Delaware County, Iowa.

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Terraces on the Kettelkamp farm.

Terraces on the Kettelkamp farm.

Terraces built and seeded in 1983 on the Kettelkamp farm in Delaware County, Iowa.

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Terrace construction on Gary Lake.

Terrace construction on Gary Lake.

Porter Construction building terraces on Gary Lake.

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Ray Wycoff and George Carlson assessing soil conditions.

Ray Wycoff and George Carlson assessing soil conditions.

Ray Wycoff (holding rod) and George Carlson (taking notes) assessing soil conditions in Delaware County, Iowa.

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Wetland type 3 in Delaware County, Iowa.

Wetland type 3 in Delaware County, Iowa.

Wetland type 3 in Delaware County, Iowa.

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Water erosion in Delaware County, Iowa.

Water erosion in Delaware County, Iowa.

Water erosion in Delaware County, Iowa. Fence rows like this one are a common sight. Erosion has caused soil elevation to be about two feet lower on the near side of the fence compared to the far side. Soil erosion signs like this proves that topsoil…

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Silt erosion in a ditch.

Silt erosion in a ditch.

Silt erosion in a ditch. in Delaware County, Iowa.

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Sediment collection in the ditch.

Sediment collection in the ditch.

Sediment collection in the ditch in Elk Township; Delaware County, Iowa.

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Sediment at the bottom of the hill.

Sediment at the bottom of the hill.

Sediment at the bottom of the hill in Colony Township; Delaware County, Iowa.

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Bob Sack aluminum drop spillway structure.

Bob Sack aluminum drop spillway structure.

Bob Sack aluminum drop spillway structure in Delaware County, Iowa.

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