Infiltration Capacity Rate Explained
Infiltration is the process where water on the ground surface enters the soil pores.
The infiltration capacity rate signifies the maximum possible rate at which soil can absorb water at any given moment. This rate is determined by factors like soil type, moisture content, and compaction.
When Infiltration Matches Capacity Rate
Infiltration proceeds at the medium's maximum capacity rate under a specific condition:
- When the rate at which rain falls (rainfall intensity) is greater than the soil's maximum absorption rate (infiltration capacity rate). In this scenario, mathematically represented as $I_{rainfall} > C_{infiltration}$, the soil absorbs water at its limit ($C_{infiltration}$), and the surplus rainfall becomes surface runoff.
- Conversely, if rainfall intensity is lower than the capacity rate ($I_{rainfall} < C_{infiltration}$), the actual infiltration rate matches the rainfall intensity because the soil can absorb all incoming water.
Therefore, the infiltration rate matches the medium's capacity only when rainfall intensity exceeds this absorption limit.
Important Questions from Hydrology And Water Resources
- A river with $2\text{ km}$ wide flood plain and $10\text{ m}$ channel depth flows with a velocity of $2\text{ ms}^{-1}$. What will be flow condition in the river?
Read the following statements and choose the CORRECT answer.
I. The suspended sediment concentration in rivers is supply-limited rather than hydraulically-limited, when
II. Much suspended material is contributed by overland flow from hillslope erosion
III. Suspended material is entirely derived by turbulent diffusion from the channel bed
- With reference to water in the hydrologic cycle, its residence time is the maximum in
Match the basin types A, B and C with the hydrograph patterns P, Q and R
Basin types Hydrograph pattern A. 
P. 
B. 
Q. 
C. 
R. 
Hydraulic gradient beneath A and B during rainy and dry seasons will
