Discussion
Match the following items in Column I with the corresponding items in Column II:
| Column I | Column II |
|---|---|
| P. Flownet | 1. Soil erosion |
| Q. EI 30 Index | 2. Curve number |
| R. Groynes | 3. Equipotential line |
| S. Isobath | 4. Groundwater |
| T. Runoff | 5. River bank |
Answer: C
The match is P-3, Q-1, R-5, S-4, T-2.
- A flownet is drawn from streamlines and equipotential lines.
- The EI30 index, storm energy times maximum 30-minute intensity, measures the erosivity of rainfall: soil erosion.
- Groynes are structures built out from a river bank to protect it.
- An isobath here is a line joining points of equal depth to groundwater.
- Runoff is estimated by the SCS curve number method.
The other options link the flownet to groundwater depth or the EI30 index to the curve number, which misreads both terms.
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