Rainfall describes size of droplets greater than

Which denotes all forms of water?

Hydrographic survey deals with the mapping of

The annual average precipitation at a particular station is called as

The rainfall figures for successive 30-minute intervals are 35, 40, 120, 85, 45, 45 and 30 mm/hr. If the ϕ index is 35 mm/hour, determine the W-index.

The probability of a 10 cm rainfall occurring in 1 hour at station B is 1/60. What is the probability that a 1-hour rainfall of 10 cm or more will occur at station B once in 30 successive years?

Water is flowing in a canal of width 5 m at a rate of 20 cumec. The average diameter of the particles of the medium through which water is flowing is 0.53 mm. What is the Lacy scour depth of the canal?

Find the infiltration rate constant (in hr^-1) if the initial infiltration capacity was 15 mm/hr and final infiltration capacity was 0.8 mm/hr, and the total of 50 mm of water infiltrated during a 20-hour interval.

A triangular direct runoff hydrograph due to a storm has a time base of 90 hours. The peak flow of 60 m³/s at 20 hours from the start of the storm. The area of the catchment is 300 km². The rainfall excess of storm (in cm, up to two decimal places) is _____.

A rain gauge station 'X' was inoperative for some time, during which a storm occurred. The storm readings at the 3 stations A, B, C surrounding X were 6.6 cm, 4.8 cm, and 3.7 cm respectively. The normal annual precipitations at stations 'X', A, B, and C are 65.6 cm, 72.6 cm, 51.8 cm, and 38.2 cm respectively. Estimate the precipitation data of station X using the normal ratio method.