Sustainability, Journal Year: 2024, Volume and Issue: 16(15), P. 6557 - 6557

Published: July 31, 2024

This study aimed to enhance flood forecasting accuracy in the Liangfeng River basin, a small karst watershed Southern China, by incorporating Available Reservoir Capacity of Karst (ARCK) into HEC-HMS model. region is often threatened floods during rainy season, so an accurate forecast can help decision-makers better manage rivers. As crucial influencing factor on karstic runoff, ARCK overlooked hydrological models. The seasonal and volatile nature makes direct computation its specific values challenging. In this study, virtual reservoir for each sub-basin (total 17) was introduced model simulate storage release ARCK-induced runoff phenomena. Simulations via enhanced rainfall events with significant fluctuations water levels 2021–2022 revealed that Nash–Sutcliffe efficiency coefficient (NSE) average simulation improved more than 34%. Normally, rainfalls (even heavy precipitations) dry season either do not generate or cause negligible flow rates due long intervals. Conversely, relatively frequent light ones) wet result substantial runoff. Based observation, three distinct types reservoirs different retaining/releasing capacities were defined, reflecting variations both frequency volume seasons. real-time environmental variable, exhibits higher lower seasons, respectively, we avoid risk flooding according special effects.

Language: Английский