Abstract <p>In geomorphic studies, discharges for sediment transport are generally indicated by discharge indices. These discharges are specifically known as (a) effective discharge, (b) functional-equivalent discharge, and (c) fraction-load discharge and are used to measure the efficacy of stream flow distribution in sediment transfer through water channel networks. Effective discharge plays a critical role in shaping channel morphology and sediment dynamics while functional-equivalent discharge offers a comparative perspective on sediment dynamics under varying hydrological scenarios. In contrast, fraction-load discharge focuses on the specific flow rate responsible for transferring a particular percentage of the total sediment load within the water channel network. These concepts are integral to understanding sediment transport processes and are often explored in studies using Magnitude-frequency analysis (MFA) to evaluate the relationship between flow characteristics and sediment movement. MFA is a statistical approach to compute these discharges or discharge indices in sediment transfer. In MFA, these discharges are computed based on the transport effectiveness function. This function is a mathematical equation or relationship that expresses sediment transport rate (usually sediment discharge) as a function of one or more hydraulic parameters, sediment properties, and flow characteristics. These indices are valuable for river and watershed management, sediment control, and understanding the erosion potential of streams/rivers. The concept of discharge indices underscores the dynamic nature of sediment transfer in the streams/rivers and highlights the importance of flow regime management in maintaining channel stability and water quality.</p>