Recent activity in Water Resources and Environmental Hydraulics

A well penetrates an unconfined aquifer. The water level (i.e., head) in the well prior to pumping is $25$ $\mathrm{m}$. After a long period of pumping at a constant rate...

The mass curve of a rainfall event of $100$ $\mathrm{min}$ duration over a catchment is given in the table.If the initial loss is $0.6$ $\mathrm{cm}$ and $\phi$-index is ...

A cylindrical roller gate of diameter $6.0$ $\mathrm{m}$ and length $10.0$ $\mathrm{m}$ is placed on a dam to store water behind it, as shown in figure.The magnitude of t...

Water is flowing at the rate of $15 \mathrm{~m}^{3} / \mathrm{s}$ through a rectangular channel of $5$ $\mathrm{~m}$ width.If the acceleration due to gravity $(g)$ is $9....

Consider the following statements regarding the pressure measured at a point in a fluid.$\text{S}1$: Absolute pressure is gauge pressure plus atmospheric pressure.$\text{...

A circular sewer pipe, having Manning's coefficient $(n)$ of $0.01$, is laid at a bed slope of $1: 100$. If it is flowing $80 \%$ full for a discharge of $2 \mathrm{~m}^{...

A pipe line $\boldsymbol{O P} \boldsymbol{Q} \boldsymbol{R}$ branches into three pipes $\boldsymbol{X}, \boldsymbol{Y}$, and $\boldsymbol{Z}$ between points $\boldsymbol{...

A homogeneous isotropic confined aquifer of uniform thickness $30 \: \mathrm{m}$ has hydraulic conductivity of $5 \mathrm{~m} / \mathrm{day}$ and porosity of $0.3$. There...

The following table and figure (not to scale) show characteristics of a catchment$$\begin{array}{|c|c|c|c|} \hline \text{Sub-} & \text{Area} &\text{Runoff} & \text{Time ...

An unconfined aquifer of areal extent $20 \mathrm{~km} \times 20 \mathrm{~km}$ has hydraulic conductivity of $4 \mathrm{~m} / \mathrm{day}$, porosity of $0.32$, and stora...

​​​Match the following and choose the correct option from the following$1-\mathrm{z}, 2-\mathrm{y}, 3-\mathrm{x}$$1-\mathrm{y}, 2-\mathrm{z}, 3-\mathrm{x}$$1-\mathrm{x}, ...

​​​​For a gradually varied flow, consider the following statements$\mathrm{P}: y_{n}>y_{c}>y$ in $M_{3}$ surface profile$\mathrm{Q}: $y_{n}<y_{c}<y$ in $S_{1}$ surface p...

​​​​For flood routing, consider the following statements$\text{P}$ : Hydrologic routing method uses continuity equation and momentum equation$\text{Q}$ : Hydraulic routin...

In a rectangular open channel, the flow is critical, and the flow depth is $2 \mathrm{~m}$. Select the correct statement(s)Specific energy for the flow is $3.0 \mathrm{~m...

In the context of fluid flow, which of the following statement(s) is/are correct?Streamline is a line, tangent to which at any point gives the direction of the velocity v...

With respect to particle settling in wastewater treatment systems; the correct statement(s) is/areSettling in grit chamber and primary sedimentation tanks are examples of...

A Class-A pan was setup adjacent to a lake for measuring evaporation losses in the lake. The depth of water in the pan at the beginning of a certain week was $250 \mathrm...

Consider two horizontal layers of an aquifer as shown in figure. Each layer is isotropic and homogeneous. Flow is parallel to the stratification. Thickness and horizontal...

Water is flowing FULL through a rectangular tunnel of size $3 \mathrm{~m}$ (width) $\times 2 \mathrm{~m}$ (height). The average velocity of flow is $1 \mathrm{~m} / \math...

The Streeter-Phelp's oxygen sag equation for a river is based on a few assumptions. The correct assumption$\text{(s)}$ is/areAt any instant the deoxygenation rate is dire...