A hydrograph is a graph of the flow in a stream over a period of time. Below is a picture of a hydrograph, with stream flow (discharge) in cubic feet per second on the y-axis and time in months on the x-axis
What is discharge in geography?
Discharge – The quantity of water that passes a given point on a stream or river‐bank within a given period of time. Flood – Occurs when river discharge exceeds river channel capacity and water spills out of the channel onto the floodplain and other areas.
What is a hydrograph in hydrology?
A hydrograph is a graph or plot that shows the rate of water flow in relation to time, given a specific point or cross section.
What is the purpose of hydrograph?
A hydrograph may be used to show how the water flow in a drainage basin (particularly river runoff) responds to a period of rain. This type of hydrograph is known as a storm or flood hydrograph and it is generally drawn with two vertical axes.What is discharge in a river?
Discharge is the volume of water moving down a stream or river per unit of time, commonly expressed in cubic feet per second or gallons per day.
What are the component of Hydrographs?
There are three main components to the hydrograph—rising limb, peak, and falling limb. The falling limb is often referred to as the recession curve, which provides information on the configuration of the karst conduits within an aquifer system, as well as its transmissivity and volume.
What is a drainage basin geography?
Drainage basins refer to the area of land drained by a major river and its tributaries. All rivers flow from the source (often in the mountains) to the mouth (the sea). The drainage basin is regarded as a closed system because water never leaves. Instead, it is recycled from one state to another.
Why do Hydrographs differ?
The shape of a hydrograph is altered by a few different things. One factor is the shape of the drainage basin. Drainage basins come in a wide assortment of shapes. … Basins with steep slopes will have a high peak discharge and a short lag time because the water can travel faster downhill.What is peak discharge?
Peak discharge is the maximum rate of flow for a given condition and is used in the design of conservation measures. … Peak discharge is also referred to as peak rate of discharge or peak rate of runoff. It is usually referred to in units of cubic feet per second, or cfs.
What is studied under hydrology?Hydrology is the science that encompasses the study of water on the Earth’s surface and beneath the surface of the Earth, the occurrence and movement of water, the physical and chemical properties of water, and its relationship with the living and material components of the environment.
Article first time published onWhat is flow routing?
Flow routing is a network routing technology that takes variations in the flow of data into account to increase routing efficiency. … A flow router evaluates traffic flows in real time — based on an ID, route, time of receipt and rate of flow — to keep streaming traffic moving as quickly as possible.
How river discharge is formed?
River discharge is an integrated result of hydrological processes in a river system in transporting runoff from rainfall. … The primary analysis showed that in changing climate, heavy rainfall triggers higher runoff during the wet season causing flooding of low-lying areas.
Why is my discharge like water?
It’s caused by hormonal changes. If the discharge is watery, it’s most likely normal and not a sign of infection. Clear and watery discharge can increase at any point during your cycle. Estrogen can stimulate the production of more fluids.
Where does the Ganga river get discharged?
GangesDischarge• locationGanges Delta, Bay of Bengal• average18,691 m3/s (660,100 cu ft/s)Discharge
What is a drainage basin answer?
drainage basin, also called catchment area, or (in North America) watershed, area from which all precipitation flows to a single stream or set of streams. … The boundary between drainage basins is a drainage divide: all the precipitation on opposite sides of a drainage divide will flow into different drainage basins.
What is meant by drainage?
Drainage is the system or process by which water or other liquids are drained from a place. Line the pots with pebbles to ensure good drainage. The drainage system has collapsed because of too much rain. Synonyms: sewerage, waste, sewage More Synonyms of drainage.
What is drainage in social studies?
INTRODUCTION: The term drainage describes the river system of an area. Small streams flowing from different directions come together to form the main river, which ultimately drains into a large water body such as a lake or a sea or an ocean. The area drained by a single river system is called a drainage basin.
What is unit of hydrograph?
Unit hydrograph is a direct runoff hydrograph resulting from one unit (one inch or one cm) of constant intensity uniform rainfall occurring over the entire watershed. … The role of unit hydrograph in hydrology is to provide an estimate of direct runoff hydrograph resulting from given excess rainfall hyetograph.
What is the difference between hydrograph and unit hydrograph?
Basically, the unit hydrograph is a multiplier, converting rainfall to runoff. A unit hydrograph is a hydrograph and thus its multiplying effect varies with time, producing from rainfall a time distribution of surface runoff. A unit hydrograph only measures direct surface runoff.
What is catchment area in civil engineering?
1) An area from which surface runoff is carried away by a single drainage system. 2) The area of land bounded by watersheds draining into a river, basin or reservoir.
What is annual maximum discharge?
The Annual Maximum (AMAX) series contains the largest observed flow (in cubic metres per second, abbreviated to m3s-1 and sometimes also referred to as ‘cumecs’) in each water year.
What factors affect discharge?
There are several factors that affect stream discharge. The velocity of the water affects it; faster water means more passes per second so more discharge. The width and depth of the river also affects it; a larger river at the same speed will have higher discharge.
What is flood discharge?
Discharge is the volume of water that passes through a given cross section per unit time, usually measured in cubic feet per second (cfs) or cubic meters per second (cms). Stage is the level of the water surface over a datum (often sea level).
What are the different types of Hydrographs?
- Storm hydrographs.
- Flood hydrographs.
- Annual hydrographs a.k.a. regimes.
- Direct Runoff Hydrograph.
- Effective Runoff Hydrograph.
- Raster Hydrograph.
- Storage opportunities in the drainage network (e.g., lakes, reservoirs, wetlands, channel and bank storage capacity)
How does precipitation affect river discharge?
Vegetation intercepts precipitation and slows the movement of water into river channels. This increases lag time. … Heavy storms result in more water entering the drainage basin which results in a higher discharge. The type of precipitation can also have an impact.
What factors affect Hydrographs?
- Size of drainage basin.
- Vegetation.
- Valley side steepness.
- Soil type.
What is the difference between hydrology and hydrogeology?
Hydrology is the study of water on Earth’s surface, including its distribution and movement across the land. Hydrogeology is the study of groundwater and its movement through the Earth’s crust. Both are disciplines of geology.
What is the difference between hydraulics and hydrology?
What’s the difference between Hydraulics and Hydrology anyways? Hydrology – The study or science of transforming rainfall amount into quantity of runoff. Hydraulics – The study or science of the motion of liquids in relation to disciplines such as fluid mechanics and fluid dynamics.
What is natural hydrology?
Hydrology is the study of the distribution and movement of water both on and below the Earth’s surface, as well as the impact of human activity on water availability and conditions.
What is reservoir and channel routing?
Types of Routing Flood routing is the process of determining the timing and shape of a flood wave. In a reservoir, this is done by accounting for the storage available in the reservoir, whereas in a channel, the flood wave is observed at successive points along a river.
What is Muskingum routing method?
The Muskingum method is a hydrological flow routing model with lumped parameters, which describes the transformation of discharge waves in a river bed using two equations. … These equations are applied within a river reach between two cross sections of a river.
