When does a Stream become a River. Is it size or flow or some other reason.?
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The Natural Tendencies of Rivers\n\nWritten by J. G. Imhof\n\nOntario Ministry of Natural Resources\n\n \nI watched the foam line intently. The caddis emerger was in perfect position, smack dab in the middle of the thin frothy line, that was weaving around the boulders. I remembered old Bill Philips' words, "Watch the foam; Ausable brown trout always rise in the foam". Then I saw a brown snout poke out for a moment and punch a neat dash in the foam. The trout took my small emerger and the fight was on! A few moments later I netted a lovely trout and released it back into the pocket water of the Credit River.\n\nAs I sat by the edge of the boulder strewn stream, I reflected upon the uniqueness and similarity of every river I have fished. The Credit River below Cataract is not the West Branch of the Ausable River in upper New York State and yet the pocket water, the foam lines, and the trout lies are the same.  I had experienced a similar "dejá vu" while fishing other rivers: portions of the Grand River and Saugeen River remind me of the Beaverkill; portions of the Sydenham River remind me of Flat Creek in Wyoming; portions of the River Dee in Wales remind me of the Maitland River.\n\nWhat is it about these rivers that on one hand is unique and yet so familiar? How is it that you might never have fished a particular river before and yet you just know where the trout or bass will lie?\n\nPerhaps part of the answer lies in how rivers and streams are formed. It is true that every part of the earth is unique, with a slightly different mix of soils, geology, climate, vegetation and animals. But ultimately there are still universal physical laws that govern the way climate, geology, and topography of an area shape a watershed, the pattern, volume, and characteristics of water flow and the valleys and stream channels found within them.\n\nA wild cowboy from Colorado helped me to understand the underlying patterns of rivers that I had observed over the last 30 years. As well as a cowboy, Dave Rosgen is a flyfisher, hydrologist, and geomorphologist with 30 years of experience in researching and repairing rivers. Dave was suggested as a speaker at a conference on trout stream rehabilitation that I was chairing back in 1990. A mutual friend, Don Duff, from the U.S. Forest Service in Utah said, "You gotta have this guy speak at the conference. He just knows rivers and loves them".\n\nDave knocked our socks off at the conference. His presentation was like a bombshell for many of us. Besides his comments about the "pin-headed snarfs" that damage rivers and try to make them do what they are not meant to do, he demonstrated that rivers have inherent patterns and forms based upon the slope of their valleys, how tightly confined the streams are within their valleys, the size of soil and rock the streams have to work with, and other factors.\n\n"When the works of man run contrary to the natural tendencies of the river," Dave exclaimed, "the river eventually wins."\n\nOne year later I organized and participated in a one week course on streams taught by Dave. During the one week course, my mind was rocked by revelation after revelation about streams and their characteristics. "It was like flashbulbs constantly going off in my head," I explained to a friend a few weeks later. That comment was echoed by both biologists and engineers taking that particular course and several others taught by Dave in subsequent years.\n\n \n\nFig 2.7:\nMajor Stream Types- longitudinal, cross esction and\nplan views (adapted from Rosgen, 1996)\n\n \n\nDave's course enabled me to understand the relationships I had observed about river forms, eroding banks, spawning areas in streams, and the appropriateness of various stream improvement techniques I had tested over the years. Dave was able to explain and demonstrate how and why the traditional approaches to channelization, rip-rapping and river
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What happened is history. We are living in history. History is more than action, but actions happen in history. History is a stream off the river of eternity. So the question is, "what is happening in the world?"
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I agree that the answer is C, and that the question is poorly worded.\n\nRapidly moving water can carry along particles in a mixture of sizes.  As it slows down, the largest particles settle out first, and the smallest ones last.  The experiment with the jar suggests this, by showing what happens in completely still water.\n\nDeltas are expected to be graded with the most gravelly deposits farthest up-river, sandy in the middle, and the most silty deposits nearest the sea.\n\nFlood plains are expected to be silty because the slowly-moving spreading floodwater can pick up the smallest particles but not the larger ones.
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A tributary (or confluent/affluent) is a stream or river which flows into another river (a parent river) or body of water but which may not flow directly into the sea. In orography, tributaries are ordered from those nearest to the source of the river to those nearest to the mouth of the river. A confluence is where two or more tributaries or rivers flow together.\n\nThe descriptive terms right tributary and left tributary always apply from the perspective of looking downstream (in the direction the current is going), similarly to the river banks.\n\nThe opposite of a tributary is a distributary; a river branch that flows away from the main stream. A river and all its tributaries drain the watershed of the river
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The measurement of a river’s meander is quantified with a value known as sinuosity index. For single channel rivers, excluding braided channels, this is defined as :\n\nSI = length of channel axis/length of meander belt axis\n\nThis sinuosity index has been used to separate single channel rivers into three general classes: straight (SI < 1.05), sinuous (SI 1.05-1.5), and meandering (SI > 1.5)\n\nGenerally as gradient decreases, the sinuosity index increases.  To say that meandering causes changes in gradient would be misleading. The overall channel pattern is a response by the river to balance its energy expenditures as it carries load and discharge. The river’s tendency to meander is related to its discharge, and its type and amount of sediment load as well as the gradient.\n\nWavelength and amplitude of river meanders are not random. They are controlled by aspects of overall load, discharge, and gradient. In addition to lateral migration of channels, there is a long-channel variation that forms patterns of riffles and pools.  These riffle-pool patterns  which are related to flow cells tend to initiate bank erosion and develop meander bends.\n\nMount, Jeffrey F. 1995\n“California Rivers and Streams:  The Conflict Between Fluvial Process and Land Use”\n\n\nI’m a geologist.
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Do you want a real river with water or a model? It is very hard and messy to build a real river. It will also take a lot of water and space. A model with clear resin to represent the river water and colors and objects to represent different aspects and details of what and how a river works and what lives in it will be much easier to transport. Search for model railroading tips on ways to build a resin river.
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What do u mena by "FULL"\n\nFull means when a limit has been achieved... there is nothing like that for abstract items like "SEA"\n\nBut for ur answer... rivers flow into the sea... sea 'dries' into clouds... clouds precipitate into streams.. streams merge into rivers... the process iterates ;)
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If you think about it, the "source" of a river is not a real thing; It's just a single spot in the water cycle. Rain falls, collects, runs into streams, runs into rivers, run to a lake or an ocean, evapourates into clouds, and goes round again.  You could argue that anywhere in this cycle is a starting point, or nowhere.  Gravity & evapouration are driving this cycle.  In the same way, winds are just air moving from an area of higher pressure to an area of lower pressure. What causes these differences in pressure is what starts the winds a-blowing.  Some of the factors involved are temperature changes in the oceans, and the friction of the atmosphere against the earth as it turns.
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Eons ago there were rivers\n\nTh
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They don't hold water that is why they are called rivers - the water flows out.
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Rivers empty into major bodies of water...tributaries empty into rivers
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Impossible to answer. No one has ever counted them all and how do you define a river? Here what we define as a river may de called a creek over there.\n\nGod is the only one I know who truely knows the answer to this question.\n\nThe answer would be in the 100,000's though.
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They restrict the width of where the water can go. The narrower the area, the faster the flow.
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The mouth.\nLakes,streams from mountains.The ice from mountains melt,causing tiny streams of water running down the mountain.As it goes along,more water is collected(rain etc.),and it becomes a small river.There are three stages of a river.First,the valley is narrow,second,it gets wider,and third, it is almost flat and very wide.it ends at the sea. \nHope this helps :)
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sounds like the reminiscing of an aging man looking back on his youth, maturity, and now looking towards his future path. The river represents the flow of his life from birth to death with a grace and purpose that will forever continue.
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I belive you are tallking about a source for water.  It could be several thing, a glacier melting,  snow pack from the winter or natural springs.  Where the water in a mountain finds a hard rock and then will find the path of least resistance,  sometimes out the side of the mountain which would be a mountain spring.  But the mountain source is just the fact that the river is starting in mountain,  from a spring, winter melt off or glacier.  hope that helps.
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figure the bottom, the top gets fed more water as it flows down river by rain, the bottom gets its water from runoff - the effect of the rain up-stream.