AgriMetSoft

SCS Curve Number Tool
SCS Runoff Curve Number Method

SCS Curve Number Tool

Simple methods for runoff estimation are particularly important in hydrologic applications, such as flood design or water balance. Soil Conservation Service Curve Number (SCS-CN) is a popular surface runoff prediction method because it is simple in principle, convenient in the application, and easy to accept.

SCS Curve Number Table

Select the CNs based on table. we collected the SCS-CN Curve Number Table. You can find the SCS-CN Curve Number Table in this page: SCS-CN Curve Number Table

Then Convert CNII to CNI or CNIII based on the moisture conditions.

SCS Curve Number for the basin

The tool calculate the CN of basin based on the area of sub-basin that you entered in the tool by using this formula.

Curve Number for Basin

AMC - Antecedent Moisture Condition

AMC-I: Soils are dry but not to wilting point. Satisfactory cultivation has taken place

AMC-II: Average conditions

AMC-III: Sufficient rainfall has occurred within the immediate past five days. Saturated soil conditions prevail.

Antecedent Moisture Condition
Subscribe to our Channel In YouTube:

IDF Curve Tool