Home
Back
Formula Used:
| From: | To: |
The Daily Runoff formula estimates direct surface runoff for black soils under Antecedent Moisture Conditions (AMC) of type I and II for Indian conditions. It provides an accurate assessment of water runoff based on precipitation and soil retention capacity.
The calculator uses the formula:
Where:
Explanation: The formula calculates the runoff by considering the relationship between total precipitation and the soil's maximum retention capacity, with specific coefficients optimized for black soils under AMC types I and II in Indian conditions.
Details: Accurate runoff estimation is crucial for water resource management, flood prediction, irrigation planning, and soil conservation efforts, especially in agricultural regions with black soils.
Tips: Enter total precipitation and potential maximum retention in cubic meters. Both values must be valid (precipitation > 0, retention ≥ 0).
Q1: What are AMC types I and II?
A: AMC (Antecedent Moisture Condition) types refer to the soil moisture levels before a rainfall event. Type I represents dry conditions, while type II represents average conditions.
Q2: Why is this formula specific to black soils?
A: Black soils have unique properties like high clay content and specific infiltration rates, making standard runoff formulas less accurate without customization.
Q3: What are typical values for potential maximum retention?
A: Retention values vary based on soil composition, but for black soils, they typically range between 1-5 cubic meters depending on soil depth and condition.
Q4: Can this formula be used for other soil types?
A: This formula is optimized for black soils under specific moisture conditions. Using it for other soil types may yield less accurate results.
Q5: How often should runoff calculations be performed?
A: Runoff calculations should be performed for each significant rainfall event, particularly during monsoon seasons or periods of heavy precipitation.