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Riprap causes morphological changes in the riverbeds they surround. One such change is the reduction of sediment settlement in the river channel, which can lead to scouring of the river bed as well as coarser sediment particles.
Rock riprapping protects its south side from erosion. A 300-foot (91 m) concrete spillway curves to the west. A 55-foot (17 m) arched, steel bridge (non-contributing) spans across the spillway. Most of the lake is surrounded by a 3.25-mile (5.23 km) trail.
Isinglass Swim bladder of a rudd (Scardinius erythrophthalmus). Isinglass (/ ˈ aɪ z ɪ ŋ ɡ l æ s,-ɡ l ɑː s / EYE-zing-gla(h)ss) is a form of collagen obtained from the dried swim bladders of fish.
Contour plowing, Pennsylvania, 1938 "Contour bunding", Catalonia, 2007. Contour plowing or contour farming is the farming practice of plowing and/or planting across a slope following its elevation contour lines.
The cost of the superstructure was $35,500, the cost of the substructure was $35,415.46, and the cost of the filling and riprapping was $2384.21. The King Bridge Company was in charge of building the bridge's superstructure and Joseph Hendler was in charge of building the substructure. [1]
R/P FLIP (floating instrument platform) is an open ocean research platform [3] [6] that was owned by the U.S. Office of Naval Research (ONR) and operated by the Scripps Institution of Oceanography. [7]
Strip farming in Wisconsin, 1957. Strip cropping is a method of farming which involves cultivating a field partitioned into long, narrow strips which are alternated in a crop rotation system.
Poster by Albert M. Bender, produced by the Illinois WPA Art Project Chicago in 1935 for the CCC CCC boys leaving camp in Lassen National Forest for home. The Civilian Conservation Corps (CCC) was a voluntary government work relief program that ran from 1933 to 1942 in the United States for unemployed, unmarried men ages 18–25 and eventually expanded to ages 17–28. [1]