Orographic precipitation occurs due to air masses being lifted to higher altitudes by
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The average annual rainfall over the whole of India is estimated as
The standard Symons' type raingauge has a collecting area of diameter
The following recording raingauges does not produce the mass curve of precipitation as record:
When specific information about the density of snowfall is not available, the water equivalent -of snowfall is taken as
A, B and C are three catchments each having an area of about 10,000 km2 situated in an arid zone, mountainous region of a tropical zone and flat region of a tropical zone respectively. The desirable number of hydrometeorological stations for each of these three areas, NA, NB and NC respectively will be such that
The monthly rainfall at a place. A during September 1982 was recorded as 55 mm above normal. Here the term Normal means.