Three individual sub-models (the Malni chhara, Baitha khal and Goali chhara sub-models) were developed for Sylhet. The sub-models consist of major canals/drainage channels, along with their tributaries, on the right bank of the Surma River. The drainage network for each individual canal was developed using the survey **data** of the canal's cross-sections and its topography in 2016 by the Institute of Water Modelling, Dhaka. The boundary **data** consists of hydrometeorological data, including rainfall Note: Rainfall values are in mm; the 2-day and 5-day max rainfalls indicate cumulative maximum rainfalls for that duration. and evapotranspiration **data** from the Sylhet station, and downstream water level **data** for the Surma River. For Bharatpur, two sub-models (the Pungi canal and the Kerunga canal sub-models) were developed using surveyed cross-sections of these canals. The boundary **data** consists of hydrometeorological data, including rainfall **data** from the Bharatpur station and evapotranspiration **data** from the Kaligandaki station, and downstream bankfull water level **data** for the Narayani and Rapti rivers as water levels.