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2. Aquatic weed harvester - Wikipedia

   en.wikipedia.org/wiki/Aquatic_weed_harvester

   Truxor in action on a freshwater lake. An aquatic weed harvester, also known as a water mower, [1] [2] mowing boat and weed cutting boat, [3] is an aquatic machine specifically designed for inland watercourse management to cut and harvest underwater weeds, reeds and other aquatic plant life. [4]

3. Grand Prairie Area Demonstration Project - Wikipedia

   en.wikipedia.org/wiki/Grand_Prairie_Area...

   The project, conceived by the US Army Corps of Engineers' Memphis District and approved by US Congress in 1950, generally involves the pumping of water from the White River near DeValls Bluff into pipelines and canals throughout Arkansas's Grand Prairie, specifically to farmers in Arkansas, Lonoke and Prairie counties. The new water source is ...

4. Lawn mower - Wikipedia

   en.wikipedia.org/wiki/Lawn_mower

   A lawn mower (also known as a grass cutter or simply mower, also often spelled lawnmower) is a device utilizing one or more revolving blades (or a reel) to cut a grass surface to an even height. The height of the cut grass may be fixed by the mower's design but generally is adjustable by the operator, typically by a single master lever or by a ...

5. Contour plowing - Wikipedia

   en.wikipedia.org/wiki/Contour_plowing

   Contour plowing or contour farming is the farming practice of plowing and/or planting across a slope following its elevation contour lines. These contour line furrows create a water break, reducing the formation of rills and gullies during heavy precipitation and allowing more time for the water to settle into the soil. [ 1 ]

6. Mower - Wikipedia

   en.wikipedia.org/wiki/Mower

   This type of mower is used to produce consistently short and even grass on bowling greens, lawns, parks and sports grounds. When pulled by a tractor (or formerly by a horse), these mowers are often ganged into sets of three, five or more, to form a gang mower. A well-designed reel mower can cut quite tangled and thick tall grass, but this type ...

7. Drainage gradient - Wikipedia

   en.wikipedia.org/wiki/Drainage_gradient

   Drainage gradient (DG) is a term in road design, defined as the combined slope due to road surface cross slope (CS) and longitudinal slope (hilliness). Although the term may not be used, the concept is also used in roof design and landscape architecture. If the drainage gradient is too low, rain and melt water drainage will be insufficient.