Question:
The shape of a unit hydrograph depends on
The shape of a unit hydrograph depends on
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Unit hydrograph shape mainly depends on catchment characteristics such as area, slope, shape and drainage pattern.
Updated On: May 4, 2026
- Rainfall intensity only
- Catchment characteristics
- Only the duration of rainfall
- Wind speed
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The Correct Option is B
Solution and Explanation
Step 1: A unit hydrograph shows the runoff response of a catchment due to unit depth of effective rainfall.
Step 2: The shape of a unit hydrograph depends on the way the catchment collects and drains water.
Step 3: Important catchment characteristics include:
• Area of catchment
• Shape of catchment
• Slope
• Drainage density
• Soil and land use
Step 4: Rainfall duration can affect the hydrograph, but the basic shape is strongly controlled by catchment characteristics.
Step 5: Therefore, the correct answer is: \[ \boxed{\text{Catchment characteristics}} \]
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