stream into rock or sediment • Streambeds- bottom of the channel • Stream banks- sides of the channel 4. Floodplains- flat valley floor composed of sediments deposited by the stream 5. Watershed- higher ridge of land‚ the boundary between one drainage basin and another 6. Source- The place where a river begins- river system has numerous sources 7. Confluence- A place where two rivers meet Overground • Channel flow- Raindrops might fall directly into a river or stream • Surface Runoff- Water
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The shape of the hydrograph varies according to a number of controlling factors in the drainage basin A number of factors (known as drainage basin controls) influence the way in which a river responds to precipitation and have an effect on the shape of the hydrograph. The size‚ shape and relief of the basin are important controls. Water takes longer to reach the trunk stream in a large‚ round basin than in does in a small‚ narrow one Where gradients are steep‚ water runs off faster‚ reaches
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Characteristics 1. Drainage Area the drainage area and it is the most important watershed characteristic for hydrologic analysis. It reflects the volume of water that can be generated from a rainfall. Thus the drainage area is required as input to models ranging from simple linear prediction equations to complex computer models. Once the watershed has been delineated‚ its area can be determined‚ either by approximate map methods or by GIS. 2. Drainage Density The drainage density‚ D is the ratio
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Also called a biliary draining tube. May be placed in the common bile duct after cholecystectomy or choledochostomy. The tube facilitates biliary drainage during healing. The surgeon inserts the short end (crossbar) into the common bile duct and draws the long end through an incision in the skin. The tube is then connected to a closed gravity drainage system. Post-operatively it remains in place between 7 to 14 days. Equipment Graduated collection container Small plastic bag Sterile gloves
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L2 May 8‚ 2013 Physical Geography Agenda: • 1.Geological Structure and Relief • 2. Climate • 3. Rivers and Lakes • 4. Biomes 1. Geological Structure and Relief * Relief: means topography‚ or landforms such as mountains‚ lowlands‚ highlands etc. * Geology: is dynamics is the reasons for relief; we have interconnection between geological structures & relief. it is the inner structures of the earth.
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able to identify topographic features and know what contour lines do when they intersect streams. Understand latitude and longitude and what they indicate. Structural Geology Know the various folds and deformations (anticline‚ syncline‚ monocline‚ basin‚ dome‚ plunging anticlines & synclines‚ etc.)‚ definitions of their parts‚ and what their surface outcrops look like. Know the 3 types of faults‚ how to distinguish them‚ and the stresses that cause them. Normal- Tension Reverse- Compressed Strike/Slip-
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of Morris but it can also bring the families closer together in a time of distress. One physical characteristic that contributes to the annual flooding in the Morris Region is the drainage basin it sits in. The water from the Red River flows up from North Dakota and into Manitoba. Morris sits in the drainage basin where all the water drains into. This causes the massive and expensive flooding. The fact that Morris‚ Manitoba is also such a small town contributes to the flooding as well. With Morris
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occurrence‚ distribution‚ movement and properties of the waters of the earth and their relationship with the environment within each phase of the hydrologic cycle. The domains of hydrology include hydrometeorology‚ surface hydrology‚ hydrogeology‚ drainage basin management and water quality‚ where water plays the central role. A practitioner of hydrology is a hydrologist‚ working within the fields of earth or environmental science‚ physical geography‚ geology or civil and environmental engineering. Hydrologists
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and the Cascade Range‚ the river and its tributaries form the Willamette Valley‚ a basin that contains two-thirds of Oregon’s population‚ including the state capital‚ Salem‚ and the state’s largest city‚ Portland. Portland surrounds the Willamette’s mouth at the Columbia. Originally created by plate tectonics about 35 million years ago and subsequently altered by volcanism and erosion‚ the river’s drainage basin was significantly modified by the Missoula Floods at the end of the most recent ice
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Flood Definitions Floods are caused by weather phenomena and events that deliver more precipitation to a drainage basin than can be readily absorbed or stored within the basin. Acre-foot. Volume of water required to cover 1 acre of land (43‚560 square feet) to a depth of 1 foot; equivalent to 325‚851 gallons. Cubic feet per second (ft³/s). A unit of measurement expressing rates of discharge. One cubic foot per second is equal to thedischarge of a stream of rectangular cross section‚ 1 foot wide
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