Browse Items (469 total) for Plymouth County Soil and Water Conservation District Historical Collection

First
Previous
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Next
Last

Sort by:

Road Structure 4 miles north of Sioux City, Iowa in Plymouth County.

This photo shows a 36 inch corrugated metal pipe laid before covering on a county farmer (G. Fry) cooperative road structure. At the double elbow section to the left is where the downstream berm will be located. The structure has a slotted flume…

Robert Kelker Parallel Broadbase ten

Ron Fischer parallet grassback terraces

Rows of Small Pine Trees with Hedges near by

Seeded backslope terraces on the property of William Zemanek, Section 11 - Sioux Township #10

Seeded backslope terraces are a very effective pollution control

Seven Standing Men Talking in Field

These men are not identified, but the one in the middle is holding a document..

Several people standing by two Komatsu Excavators with a smaller farm machine in background

Shovel Loader and Bulldozer in Field - John Schnefl

Side view of man giving talk to group of seated young people outside.

Side view of property owner Lester Willams examining some native grass.

The native grass that is being examined has never been cultivated. Mr. Williams uses good management on his native grass pasture and he has had good rresponse from fertilizing. This property is located 4 miles north of Sioux City, Iowa.

First
Previous
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
Next
Last