'River channel' diaporamas de présentation

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Water: A Limited Resource

Water: A Limited Resource. Chapter 14. Domestic water in Lagos, Nigeria: in many less developed countries, access to safe, clean water use is limited and expensive. Poor residents of large towns often pay more for water than do the wealthy, spend a much larger fraction acquiring it

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Chapter 2 The Flow of Fresh Water

Chapter 2 The Flow of Fresh Water. Section1 The Active River. Rivers: Agents of Erosion. Six Million Years ago the Grand Canyon was as flat as Pitt County farm land. The Colorado River has worn down through the river bed a distance of over 1 mile.

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Downstream portion of river: landforms

Downstream portion of river: landforms. River Channel : channel is at its widest and deepest. River also has largest volume of water and load. Load consists of gravel, sand grains, silt, clay and dissolved substances. Gradient of land is very gentle. Lateral erosion is rampant.

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Invertebrates in restoration

Invertebrates in restoration. Invertebrate habitat. -many have life cycles with stages that require different habitats and even ecosystems and this must be taken into account during restoration

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Aquatic Biomes

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Unit 1.3B_4 River Landforms

Unit 1.3B_4 River Landforms. Now you know a bout the processes that enable the river to change. What does the river look like?. River Valley Development

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Chapter 14 PowerPoint

Chapter 14 PowerPoint. By: Curtis Rich and Will Warner. Objective #1. Q: Why is water so important, how much freshwater is available to us, and how much of it are we using?.

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Physical Geography Terms

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What is the River Discharge and What Factors Affect it?

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Part Two!

Part Two!. Magic. Earth Quiz (Part Two). Water causes Erosion. W hen rain falls to the Earth it can evaporate, sink into the ground, or flow over the land as Runoff. When it flows over land, erosion occurs.

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RIVER CHANNEL PATTERNS

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Stream Dynamics

1. Stream Dynamics. Weathering. Erosion. Processes which impact the course of a river over time. Deposition. Stream discharge. Gradient (slope). Tectonics. 2. Factors which influence water velocity. Stream Discharge. The volume of water in a stream.

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CHAPTER 3 SECTION 5 & 6

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Alluvial Fans By Tim Baker & Tom Coburn

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Lower discharge Lower velocity

Higher Discharge Higher velocity. Lower discharge Lower velocity. Why? Increase in discharge Decrease in channel roughness Shape is more semi circular thus reducing friction. Calculating the Hydraulic Radius . To understand how to calculate the hydraulic radius of river channels

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Using a dam (hydroelectric)

Using a dam (hydroelectric). The theory is to build a dam on a large river that has a large drop in elevation. The dam stores large amount of water behind it in the reservoir .

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Channel Efficiency

Channel Efficiency. Channel Roughness.

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Hydroelectric Power

Hydroelectric Power. Water has long been used as a source of energy , since Greeks who used water wheels over 2,000 years ago. For over a century , hydropower has been used to generate electricity thanks to falling water and tides of oceans . Use of hydroelectric power.

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