What does discharge mean for Rivers?
Table of Contents
- 1 What does discharge mean for Rivers?
- 2 How is river discharge calculated?
- 3 What is annual discharge?
- 4 What is a water discharge?
- 5 What is a high river discharge?
- 6 Where does the river get discharged *?
- 7 What is groundwater discharge and recharge?
- 8 Where do rivers have the highest discharge?
- 9 What is bankfull discharge and peak discharge?
- 10 What is the relationship between Infiltration and discharge in rivers?
What does discharge mean for Rivers?
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.
How is river discharge calculated?
Measuring Discharge Discharge is the volume of water moving down a waterway per unit of time. It is most commonly expressed in cubic feet per seconds or gallons per day. To calculate discharge, multiply the area of water in a channel cross section by the average velocity of water in that cross section.
What is the average flow rate of a river?
Average river surface velocities ranged between 0.60 m/s and 0.76 m/s (table 1).
What is annual discharge?
3.9 Mean Annual Discharge and Discharge Variability. Page 1. In hydrology and water management, the term discharge refers to the volume of water which flows through a defined cross-section of a watercourse per unit of time. Depending on the size of the river or stream, the discharge is measured either in m3/s or l/s.
What is a water discharge?
In hydrology, discharge is the volume rate of water flow, including any suspended solids (e.g. sediment), dissolved chemicals (e.g. CaCO3(aq)), and/or biologic material (e.g. diatoms), which is transported through a given cross-sectional area.[1] Frequently, other terms synonymous with discharge are used to describe …
Why is river discharge important?
River discharge is an important control on what happens at the mouth of a river, but the rate of delivery of sediment to the ocean or embayment, which often varies in relation to catchment size, lithology, and climate, is even more significant in terms of the landforms that are built (Milliman, 2001).
What is a high river discharge?
The highest flow in the channel is known as the peak discharge. The fall in discharge back to base level is shown in the receeding limb. The lag time is the delay between the maximum rainfall amount and the peak discharge. The shape of a hydrograph varies in each river basin and each individual storm event.
Where does the river get discharged *?
How is monthly discharge calculated?
The sum of daily flows for each month, when divided by the number of days in the month, will give the mean flow for that month. Then, sum each year’s monthly data for a particular month and divide by the number of years to obtain the mean monthly flow for that month for the period of record.
What is groundwater discharge and recharge?
Replenishment of infiltrating groundwater is known as recharge. Discharge of groundwater occurs when water emerges from the ground. Confined aquifers are generally recharged where the aquifer materials are exposed at the surface (outcrop).
Where do rivers have the highest discharge?
List of rivers by discharge
| No | Continent | River |
|---|---|---|
| 1 | South America | Amazon |
| 2 | Africa | Congo (Zaire) |
| 3 | Asia | Ganges/Brahmaputra/Meghna |
| 4 | South America | Orinoco |
What is river discharge and how is It measured?
River discharge is the volume of water flowing through a river channel. This is the total volume of water flowing through a channel at any given point and is measured in cubic metres per second (cumecs).
What is bankfull discharge and peak discharge?
Bankfull discharge – the maximum discharge that a particular river channel is capable of carrying without flooding. Peak discharge – the point on a flood hydrograph when river discharge is at its greatest.
What is the relationship between Infiltration and discharge in rivers?
This means infiltration levels decrease and surface runoff increases. This leads to a short lag time and an increase in peak discharge. Hydrograph – a graph that shows river discharge and rainfall over time. Flood – when the capacity of a river to transport water is exceeded and water flows over it’s banks.
How does precipitation affect the discharge of a river?
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. The lag time is likely to be greater if the precipitation is snow rather than rain. This is because snow takes time to melt before the water enters the river channel.