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What is dredging?
Dredging is the removal of sand or silt that has been deposited on the riverbed, because it is proving a hazard to river navigation to ships. A narrow channel may be kept clear by dredging so that ships may sail into a river or to reach the docks.
What month in 1817 did john oxley explore the lachlan river?
John Oxley explored the Lachlan River in May 1817. It was on 17 May that he discovered the Lachlan River overflowed its banks and he could no longer determine where the main channel was, in order to follow it.
What is stormwater?
* General definition of stormwater: Stormwater is the water produced from precipitation during a storm that can be measured in a downstream river, stream, pipe, etc. shortly after the precipitation has occurred. * Regulatory definition of stormwater: Stormwater is water that passes through an engineered structure (e.g. pipe or gutter). * Hydrologic definition of stormwater: Stormwater is water produced from precipitation during a storm that reaches a stream channel rapidly and causes an increase in water discharge of the stream. The path of transport may be natural or manmade.
Who was the first European to reach Mississippi's River?
Hernando De soto...............................
Why does channel depth decrease upstream?
Upsteam, in the mountains, the water may be flowing over rocks. In the valleys, the depth of earth and softer material is greater, so enabling the river to erode a deeper channel.
Why doesn't precitation fall from every cloud?
Precipitation forms when water droplets in clouds grow large enough to fall due to gravity. Not all clouds have enough moisture or updrafts to support precipitation. Additionally, some clouds may be too high in the atmosphere for precipitation to reach the ground before evaporating.
Do cirrus clouds produce precipitation?
Cirrus clouds typically do not produce significant precipitation. They are high-altitude clouds composed of ice crystals and are usually associated with fair weather. While they can indicate that precipitation may occur later in a weather system, any moisture they might release is usually too sparse to reach the ground as rain or snow.
What are the two factors that control the concentration of salt in seawater?
Well there may be more than two. The rivers flow into the sea, thus diluting the salt, but salt carried by the river will increase the salt content. Salt may be removed by precipitation, but only if the concentration becomes great.
What may form an oxbow river alongside a river?
An oxbow river forms when a meandering river cuts off a loop or bend, creating a new, straighter channel. This typically occurs during periods of flooding or high flow, where erosion on the outer bank of a bend and sediment deposition on the inner bank lead to the river channel shifting. Over time, the abandoned bend becomes isolated, forming an oxbow lake, which can eventually silt up and become a wetland or dry land.
How long would it take you to swim from uk to France?
Well, if you want to literally "swim" all the way from London to Paris, you're going to have to swim downstream the Thames river, then cross the English Channel, and then swim upstream the Seine river until you reach Paris... Mmmh that may take a while! But if you want to simply cross the Channel between England and France at its narrowest point, the world record is about 7h54 I think, but the average time is about twice as much or 13h.
Would the delta of the Mississippi river change over time?
Deltas of any rivers will alter over time. A channel may silt up and become blocked, so forcing the water to form a new channel elsewhere - a continuous process.
Do the levels and the sediment load increase or decrease as the river ages?
As a river gets older sediment load decreases due to the age of the river and erosion
