Quantifying effects of soil saturation and its subsequent reducing effects on soil solution chemistry and water quality is becoming an area of active research. In this research, we are interested in the short-term water ponding effects on upland soils. We designed an air-tight continuous flow reactor to quantify CO2 evolution and soil solution chemistry up to 14 days incubation. We found that changes in soil redox conditions under short-term water saturation not only affected solution chemistry, the soil aggregate stability was also lowered under anoxic condition.