Flow patterns in a fluid (gas or liquid) depend on three factors: the characteristics of the fluid, the speed of flow, and the shape of the solid surface. Three characteristics of the fluid are of special importance: viscosity, density, and compressibility.

Rivers – Rivers can create a significant amount of erosion over time. They break up particles along the river bottom and carry them downstream. Waves – Ocean waves can cause the coastline to erode. The shear energy and force of the waves causes pieces of rock and coastline to break off changing the coastline over time.

Most river erosion happens nearer to the mouth of a river. On a river bend, the longest least sharp side has slower moving water. Here deposits build up. On the narrowest sharpest side of the bend, there is faster moving water so this side tends to erode away mostly.

What three factors affect how fast a river flows and how much sediment it can erode? A river’s slope, volume of flow, and the shape of its streambed.

Which of the following is the most likely a direct result of erosion by running H2o? When it rains, water that runs off the landscapes into nearby streams. More runoff leads to more erosion.

Velocity increases as more water is added to rivers via tributary rivers. This means that less of the water is in contact with the bed of the river and the mouth so there is less energy used to overcome friction. Hence rivers flow progressively faster on their journey downstream.

Flood Erosion and Deposition: As flood waters rise, the slope of the stream as it flows to its base level (e.g., the ocean or a lake) increases. Also, as stream depth increases, the hydraulic radius increases thereby making the stream more free flowing. Both of these factors lead to an increase in stream velocity.

Streams. If a stream is flowing along straight, the strongest, fastest flow will be in the center of the stream well above the bottom of the bed or channel but below the surface.

Whether a river erodes its channel or deposits sediment depends primarily on three factors: base level, the amount of water passing a certain point in the river (its discharge), and the amount of sediment supplied to the river.

lateral erosion refers to the widening of a stream channel or valley lateral erosion in the river is the erosion of the river banks basically the river destroys it’s bank by mechanical force,usually during the high water levels and the floods.

The speed of downcutting depends on the stream’s base level, the lowest point to which the stream can erode. Sea level is the ultimate base level, but many streams have a higher “temporary” base level because they empty into another body of water that is above sea level or encounter bedrock that resists erosion.

Three zones are usually recognized – headwaters, where flow is usually lowest of any where along the system, slope is often steepest, and erosion is greater than sediment deposition; transfer zone, the middle range of the stream where slope usually flattens somewhat, more flow appears, and deposition and erosion are …

Causes. As observed above, an entrenched river can be caused by either tectonic uplift in the area or when the lowering of the sea level occurs. It can also be caused by increased level of downcutting or a collapse of moraine-dammed lake downstream, or capture of the river by another river.

River Discharge and Factors Affecting River Discharge

• Rock and soil type.
• Weather conditions.
• Type and amount of Rainfall.
• Type of land.
• Slope of area. Share this page. Recommended Journals.

As a river flows down steep slopes, the water performs vertical erosion . As a result, the size and shape of stones will change as they journey through the river profile. The discharge will increase as the river approaches the sea.

The discharge of a river changes over time depending on a few factors. The most influential factor is the weather. After heavy rainfall the discharge of the river will be higher because there’s more water entering the river. A long lag time indicates that it’s taking a long time for precipitation to enter the river.

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