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CVEN3501 Water Resources Engineering - 2025 T1

CVEN3501 Water Resources Engineering - 2025 T1

Looking for CVEN3501 Water Resources Engineering - 2025 T1 test answers and solutions? Browse our comprehensive collection of verified answers for CVEN3501 Water Resources Engineering - 2025 T1 at moodle.telt.unsw.edu.au.

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How do you determine the vertical hydraulic gradient at a site:

By obtaining detailed knowledge of the geological profile.

By two or more piezometers spread far apart across the landscape.

By pressure testing several closely spaced piezometers

By installing two or more piezometers at the same site, with screens at different but known depths.

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Why is the hydraulic head (h) a useful quantity in groundwater studies (consider the density of water to be constant)?

Because without it, water will flow in all directions.

Because it expresses water per mass.

Because it allows us the determine the direction of groundwater flow between two or more points.

Because water would flow uphill if we didn’t divide the total potential with the gravitational acceleration (g).

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If I fitted a GEV distribution (A) using 50 years of data and fitted a another GVE distribtiion (B) to a subset of 20 years of data, would the confidence limits be wider for:

B

A

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What is the saturated vapour pressure (in pascals) if the temperature is 20 degrees Celsius?

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Define the transmissivity (T)

It is the product of the hydraulic conductivity and the aquifer thickness.

It is the hydraulic conductivity in two dimensions (e.g., in the x-y plane).

It is the product of the hydraulic conductivity in the z direction and the aquifer thickness.

It replaces Kz and it is only valid if flow in the z-direction is zero.

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Define the specific retention (Sr):

It is the porosity minus the specific storage (Ss).

It is defined as the volume of water drained by desaturating the aquifer by a unit decline in hydraulic head.

It is the proportion of the water contained at saturation that is held back in the soil by capillary and surface tension effects once the soil has drained.

It is defined as the volume of water that a unit volume of a confined aquifer releases for a unit decline in hydraulic head.

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If the flow from a catchment is 10m³/s for 3 hours and the total rainfall depth is 10.8 mm, what is the catchment area (in ha)?

Hint: remember one hectare = 10000m²

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What is a piezometer?

a well from which to extract water.

An irrigation bore.

a testing facility for pressure transducers.

a bore with a short screen at the bottom which can be used to determine the hydraulic head.

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Based on the following digital elevation model, what is the flow accumulation at the cell shaded in red?

26

35

27

36

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What type of precipitation is pictured in this image:

Precipitation type sketch.

Convergent

Convectional

Frontal

Orographic

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