Hydrology Questions Set 1:
High water training is also termed as training for what?
Solution:
A catchment has an area of 150 km2 and Ryre's coefficient is 7.2. Calculate the maximum flood discharge using Ryre's formula (in m3/s).
Solution:
Which of the following river training works is also termed as training for depth?
Solution:
Find the intrinsic permeability in Darcy given the coefficient of permeability of the aquifer as 2.3 cm/s and the kinematic viscosity of water as 1.1 x 10-6 m2/s.
Solution:
Rainfall of intensity 20 mm/h occurred over a watershed of area 1 km2 for a duration of six hours. The direct runoff measured in the stream is 30,000 m3. Find the precipitation not available for runoff in this case.
Solution:
Match the following List I to List II
List I
i. Heavy rain
ii. Light rain
iii. Moderate rain
List II (Intensity)
1. < 2.5 mm/hr
2. > 7.5 mm/hr
3. 2.5 mm/hr to 7.5 mm/hr
Solution:
Match the following List I to List II
List I
i. Perennial
ii. Intermittent
iii. Ephemeral
List II
1. Has some base flow
2. Does not have base flow
3. Stream may remain dry for some months
Solution:
A conventional flow duration curve is a plot between
Solution:
The ordinates of a 2-hour unit hydrograph for a catchment are given as
Time (h) 0 1 2 3 4
Ordinate (m3/s) 0 5 12 25 41
The ordinate ( to the nearest integer, in m3/s) of a 4-hour unit hydrograph for this catchment at the time of a 3 h would be ______.
Solution:
The Muskingham model of flood routing a flood through a stream reach is expressed as O2 = K0I2 + K1I1 + K2O1 where K0, K1 and K2 are the routing coefficients for the concerned reach, I1 and I2 are the inflows to the reach and O1 and O2 are the outflows from the reach corresponding to time steps 1 and 2 respectively. The sum of K0, K1 and K2 of the model is
Solution:
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