After a major rainstorm in a humid climate and with no overland flow (surface ru

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After a major rainstorm in a humid climate and with no overland flow (surface runoff) to a stream, why does the stream level rise almost immediately?

After a major rainstorm in a humid climate and with no overland flow (surface runoff) to a stream, why does the stream level rise almost immediately? Groundwater seeps down to raise the water table to force older groundwater out into the stream. The groundwater moves very fast, through porous ground, to the stream. The stream rise comes from farther up the drainage basin. Actually it doesn't rise rapidly; it merely seems like it does. none of these If you were running water through a hose, how would you increase the velocity of the water coming from the hose? Turn up the water at the faucet Hold your finger over half of the opening in the hose Put the hose into a sprinkler Connect the hose to a spray gun All of the above increase the velocity What is the velocity of a river that has a discharge of 750 m3 per second and a cross-sectional area of 125 m2? 6 m/s 93,750 m/s 0.167 m/s 0.167 m Why are the deposits of streams graded with the largest boulders or pebbles at the bottom? The largest boulders are always at the bottom; they never move. The largest boulders eroded from the stream bank immediately roll to the bottom and stay there. Jostling of boulders, pebbles, and sand in turbulent water moves the boulders to the bottom. As the water slows after a flood, the largest boulders drop out first. Tributaries add additional sediment to the stream. Along a meandering river, where would you most likely find point bars? On the outside of a bend At the source of the river In the center of the river On the inside of a bend At the mouth of the river Why are flash floods more common in dry climates than wet climates? The rainfall intensity is greater. Individual storms last longer. The soil is less permeable. The river channels are not as deep. The channel gradients are steeper, so the water flows faster. With urbanization of the upstream drainage area, what changes can be expected in the height of the 100-year flood? a lower height, since the water runs through faster a greater height the time at highest level will be longer no change; the flood level only depends on the total rainfall upstream the downstream extent of the highest level will be less In the summer of 2008, the Mississippi river system experienced major flooding that resulted in more than 20 deaths and 9 billion dollars in property damages. Luckily, the City of St. Louis only experienced a 6-year flood. The chance of this flood happening in St. Louis every single year is ?? 0.17 years 17% once every 6 years every 6 years on average 0.17% According to the measurements at gage #05474500 and estimated by the GEV-MLE model by the U.S. Geological Survey, the discharge of the Mississippi River at this location during a 300-year flood is _________ about 6,000 m3/s about 8,000 m3/s about 12,000 m3/s about 13,000 m3/s about 14,000 m3/s Which of the following statements is NOT true about the effects of mining sand or gravel from a streambed or banks? There aren't any negative effects; the stream merely brings in more sand and gravel. Removal of sediment makes the stream erode its channel deeper. Increased erosion by the stream can affect roads and bridges. Deepening the channel lowers the water table and affects agriculture. Deepening the channel can affect water supplies. Thank you for completing this quiz.

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wow, i sign in to see the supposed blurred answers -_- good to see that there isn't any xp

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