Imha Reservoir has both a water transfer tunnel connecting Andong and selective withdrawal facility (SWF), which enable the innovative operation of reservoir. Although these facilities had not been equipped when constructed in 1993, structural measures were applied afterward as needed for effective reservoir operation. The was 2015 to minimize spillway discharge during floods by moving other wi...

First posted June 6, 2022 For additional information, contact: Director, Oregon Water Science CenterU.S. Geological Survey2130 SW 5th AvenuePortland, 97201 Mechanistic river models capable of simulating hydrodynamics and stream temperature are valuable tools for investigating thermal conditions their relation to streamflow in basins where upstream water storage management decisions have an impo...

Algal blooms have been reported in some tributary bays since the initial impoundment of Three Gorges Reservoir, which has seriously affected water ecology and drinking safety. Hydrodynamics plays a crucial role algae growth. The recent numerical models hydrodynamics quality are effective to identify effects on phytoplankton find potential strategies for controlling algal blooms. In this study, ...

The authors investigate the hypothesis that phytoplankton blooms can be modeled by treating phytoplankton as discrete particles capable of selfinduced transport via buoyancy regulation or other behaviors. A particletracking model is inserted into the CE-QUAL-ICM eutrophication model. Phytoplankton are quantified as carbonaceous biomass attached to the particles. Kinetics are adapted from CE-QUA...

Tropical semi-arid regions suffer with recurrent droughts and uncertain water availability, but a few research studies have been conducted to further understand those complexities their relationships reservoir hydrodynamics. This study assessed the hydrodynamic processes of multiple-use located in Brazilian semiarid region. The aim was apply CE-QUAL-W2 model lake’s thermal structure its variabi...

First posted September 5, 2023 For additional information, contact: Director, Oregon Water Science CenterU.S. Geological Survey601 SW Second Avenue, Suite 1950Portland, 97204 Mechanistic models capable of simulating hydrodynamics and water temperature in rivers reservoirs are valuable tools for investigating thermal conditions their relation to dam operations streamflow river basins where upstr...