Sage-Tips

How do we find rainfall intensity?

Rainfall intensity is defined as the ratio of the total amount of rain (rainfall depth) falling during a given period to the duration of the period It is expressed in depth units per unit time, usually as mm per hour (mm/h).

How do you calculate rainfall intensity per hour?

Formula Of Rainfall Intensity The intensity of rainfall (p) in mm/hr is given by the following general formula: p = 254a / (t+b) mm/hr Where, t = Duration of storm in minutes, a and b are constants. a = 30 and b = 10 when t is 5 to 20 minutes. a = 40 and b = 20 when t is 20 to 100 minutes.

What is the average rainfall in India in mm?

Average precipitation in depth (mm per year) in India was reported at 1083 mm in 2017, according to the World Bank collection of development indicators, compiled from officially recognized sources.

Which state of India receives 4000 mm of rainfall?

Explanation: Talacauvery,in Kodagu district region get more than 4000mm of rainfall.

How is hydrology intensity calculated?

Hi Mohamad, The first thing that you have to do is to convert the table of annual maximum (statistical) values of rainfall depth into Intensity Values (mm/hr) just divide the total depth (precipitation) by the rainfall duration (i.e. for 1971 during 1 hr you have a rainfall max.

How do you calculate rainfall intensity from daily rainfall?

Compute the total rainfalls(tRF) in the year of 2016 by summing the values in dRF, i.e., tRF=dRF(1)+dRF(2)+… +dRF(366). Now find the intensity of rainfall(iRF) by dividing tRF by 366, that is iRF=tRF/366. This assumes that daily rainfall data is in mm units.

What is the average rainfall in Maharashtra in MM?

Sl. No.	State	Average annual rainfall (mm)
22.	Gujarat	1,107 578
23.	Goa	3,005
24.	Maharashtra	3,005 901 882 1,034
25.	Andhra Pradesh	1,094 961 680

Which Indian state has highest rainfall?

Mawsynram (/ˈmɔːsɪnˌrʌm/) is a town in the East Khasi Hills district of Meghalaya state in Northeastern India, 60.9 kilometres from Shillong, the state capital. Mawsynram receives the highest rainfall in India….Mawsynram.

Māwsynrām
State	Meghalaya
District	East Khasi Hills
Talukas	Mawsynram C.D. Block
Area

Which regions get more than 4000 mm of rainfall?

Western Ghats, Western Coasts of India and the northeastern region comprising Mawsynram, Cherrapunji and parts of Assam and Arunachal Pradesh gets more than 4000 mm of rainfall.

Which state is the highest rainfall in India?

Meghalaya state
Mawsynram (/ˈmɔːsɪnˌrʌm/) is a town in the East Khasi Hills district of Meghalaya state in Northeastern India, 60.9 kilometres from Shillong, the state capital. Mawsynram receives the highest rainfall in India….Mawsynram.

Māwsynrām
State	Meghalaya
District	East Khasi Hills
Talukas	Mawsynram C.D. Block
Area

How do you calculate average monthly rainfall intensity?

So if you had 300 mm in April, take 360 mm/ (30 days * 24 hours) = 0.5 mm/hour average monthly intensity. If you knew it rained on only 10 days, the average rate on those days would be 1.5 mm/hour. The value of recording rain gauges is that detailed rainfall intensity rates can often be calculated.

What is the equivalent rain rate in terms of MM/HR?

Heavy rain: If 15 mm of rain have fallen in 30 minutes, then the equivalent rain rate in terms of mm/hr will be 60 min / 30 min * 15 mm of rain = 30 mm/hr Guide to rain gauges: types, sizes,

What is the highest 15 minute rainfall intensity in Nigeria?

If rainfall in tipping bucket standard gauge was recorded every 15 minutes, and the highest 15 minute value was 12 mm, the highest 15 minute intensity has a rate of 48 mm/hour. Nigeria Maritime University, Okerenkoko, Delta State, Nigeria.

How is automatic recoding used to measure rainfall?

Currently, automatic recoding is commonly applied by using the tipping bucket rain gauges with different resolution of 0.1 mm, 0.2 mm, 0.5 mm, etc. Rainfall amount and duration could be directly read by connecting it to the computer. It provides a convenient practice for recording rainfall characteristics.