Rainfall and other forms of Precipitation

Community water tank

 The Long Period Average (LPA) of the south-west monsoon season rainfall over the country as a whole for the period 1951-2000 is 89cm. The first long range forecast for the south-west monsoon season (June-September) rainfall is issued in April and the forecast update is issued in June.

India Meteorological Department has objective criteria for declaring the onset of monsoon over Kerala.

The occurrences of some exceptionally heavy rainfall during the recent years causing flash floods in many areas necessitated the study of long term changes in extreme rainfall over India.

The study includes the analysis of the frequency of rainy days, number of rainy days and heavy rainfall days as well as one-day extreme rainfall and return period analysis in order to observe the impact of climate change on extreme weather events and flood risk. It has been found that frequency of heavy rainfall events are decreasing in major parts of the central and north India while increasing in peninsular India, east and north east India.

The report provides interesting findings that are useful for hydrological planning and disaster managements such as –

You must have heard of the meteorological department’s monsoon forecast. It promises to be a near normal monsoon season from June-September with rains expected to be 98 per cent of the long period average with a 5 per cent variation. Sounds good.

Although there is enough water in the world, it is rarely in the right place at the right time in the right quantity and quality.

 The more the water wealth of a nation the higher will be the opportunities for achieving high rates of progress in the fields of agriculture production and industrial growth that help in promoting economic wealth, employment opportunities and higher standards of living. Hence the advanced countries are constantly upgrading their water resources by harnessing not only all the ground and surface waters but also by tapping a renewable, virtually unlimited and unexploited sky water resource in the atmosphere in the form of innumerable clouds. Enlightened scientists, bureaucrats, industrialists and statesmen in about 50 countries are frequently using cloud seeding operations for over 40 years for various purposes like

. I had shared how Megh Pyne Abhiyan through its local partner - Samta in Khagaria (supported by Gramyasheel, Kosi Seva Sadan, Ghoghardiha Prakhand Swarajya Vikas Sangh and Water Action) has been able to collaborate with the district administration to mainstream issues concerning water and sanitation for the flood prone areas.

In Supaul, the district administration requested our local partner, Gramyasheel to write about alternative drinking water practices (appropriate for the district) for a publication - Supaul Zila Ki Smarika, brought out by the district administration. A definite indication of the WATSAN practices being recognized at the local level. Though the collaboration is an ongoing process which would lead to positive results if time, ideas and perseverance are invested appropriately.

Groundwater has been used for domestic and irrigation needs from time immemorial. It is a component of the hydrological cycle, vital for human sustenance. Unlike surface water, groundwater cannot be readily observed. Consequently, it was long considered to be mysterious or even occult in nature, influencing legal decisions relating to groundwater ownership and use.