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How does the development of urban areas along streams and rivers affect discharge during periods of heavy rainfall?
The development of urban areas along streams and rivers often increases impervious surfaces, such as roads and buildings, which prevents water from being absorbed into the ground. During heavy rainfall, this leads to faster runoff and higher peak discharge rates in waterways, increasing the risk of flooding. Additionally, urbanization can alter natural drainage patterns, causing water to flow more rapidly into streams and rivers. Consequently, these changes amplify the impact of heavy rainfall events, resulting in more frequent and severe flooding.
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What are two things that wiuld cause a streams discharge to increase?
A heavy rainfall, or more water released from a reservoir.
What is a word that describes desert streams that carry water only during periods of rainfall called?
Ephemeral
What term is used to describe desert streams that carry water only during periods of rainfall?
Wadi
What term is used to describe desert streams that carry water only during periods of rainfall called?
Wadi
Why do desert climates often have streams?
Desert climates can have streams due to the presence of intermittent rainfall, which can lead to temporary water flow. Additionally, streams may originate from underground aquifers or mountain runoff, where water from snowmelt or rainfall in higher elevations flows into lower desert areas. These streams often dry up during prolonged dry periods but can provide essential water sources for ecosystems and wildlife when they are active.
Average rainfall of rivers and streams?
The average rainfall on rivers and streams can vary significantly depending on the location and climate of the region. Rainfall typically replenishes river and stream flow, providing a consistent source of water. Areas with higher average rainfall generally have more water flowing in rivers and streams compared to areas with lower average rainfall.
Does a streams discharge change?
All the time.
What is the average yearly rainfall of streams and rivers?
The average yearly rainfall for streams and rivers can vary greatly depending on location. In general, streams and rivers in temperate regions receive between 30-60 inches of rainfall annually. However, this can be higher in tropical areas and lower in arid regions.
How does discharge change after a heavy rainfall or snow melt?
After a heavy rainfall or snowmelt, discharge in rivers and streams typically increases due to the influx of water from surface runoff and direct precipitation. This rapid rise in discharge can lead to flooding, as the water volume exceeds the channel's capacity. Over time, as the rainwater or melted snow drains away, discharge gradually decreases, returning to normal levels. The rate and duration of these changes depend on factors like soil saturation, land use, and topography.
Does a streams discharge ever change?
All the time.
Does the carrying capacity increase as a streams slope and discharge increase?
true
why the peak discharge occurs after the peak rainfall?
Peak discharge occurs after peak rainfall due to the time it takes for rainwater to travel over land and through drainage systems to reach rivers and streams. When rain falls, it takes time for the water to runoff and accumulate, which can vary based on factors like soil saturation, land surface conditions, and drainage efficiency. Additionally, some water infiltrates the ground and contributes to groundwater flow, which also takes time to emerge in surface water bodies. Thus, the peak discharge is a delayed response to the peak rainfall event.
