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A grab dredge. Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing dams, dikes, and other controls for streams and shorelines; and recovering valuable mineral deposits or marine life having commercial value.
The general trend of the drainage of the Serajganj subdivision is from north-west to south-east, the rivers entering it from the north-west flow into the Jamuna after a tortuous course. In the Sadar subdivision, however, the general slope of the country is from west to east, and the main rivers fall into the Hurasagar, a tributary of the Jamuna.
Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and is often expressed as a flux to the water table surface.
The endorheic basin that feeds water into Üüreg Lake, Mongolia NASA photo of the endorheic Tarim Basin, China. An endorheic basin (/ ˌ ɛ n d oʊ ˈ r iː. ɪ k / EN-doh-REE-ik; also endoreic basin and endorreic basin) is a drainage basin that normally retains water and allows no outflow to other external bodies of water (e.g. rivers and oceans); instead, the water drainage flows into ...
Bengali is typically thought to have around 100,000 separate words, of which 16,000 (16%) are considered to be তদ্ভব tôdbhôbô, or Tadbhava (inherited Indo-Aryan vocabulary), 40,000 (40%) are তৎসম tôtśômô or Tatsama (words directly borrowed from Sanskrit), and borrowings from দেশী deśi, or "indigenous" words, which are at around 16,000 (16%) of the Bengali ...
Lead guttering: slate and pitched valley gutter flow into parapet gutter, with downpipe and overflow Eaves gutter and downpipe Decorative lead hopper head dated 1662, Durham Castle A rain gutter , eavestrough, eaves-shoot or surface water collection channel is a component of a water discharge system for a building. [ 1 ]
The flexible pipe is carried as a roll on the back of the machine. There is a sometimes a hopper for gravel which is kept topped up by an adjacent machine. The pipe and gravel go down apertures in the plough blade as the tractor proceeds along the desired route.
A trailing suction hopper dredger [1] (TSHD) is a type of ship capable of maintaining navigable waterways, deepening the maritime canals that are threatened to become silted, constructing new land elsewhere or replacing sand eroded by storms or wave action on the beaches. This is made possible by large, powerful pumps and engines able to suck ...