Abstract: The physio-chemical characteristics and dissolved metal (copper, lead, zinc and cadmium) concentrations from samples from Gaoqiao segment of upper Beijiang River during a storm runoff event on June 25^th, 2012, were analyzed. By Pearson correlation analysis, inter-correlative characteristics among hydrodynamics and metal concentrations were also investigated. The results revealed that during the storm runoff period, species concentrations showed similar patterns as river flow, and could be illustrated as “higher flow, higher metal concentrations.” Cadmium and lead concentrations were merely at (0.48±0.09) and (1.91±0.29) μg/L in the first stage, known as a partial flow generation period, while copper and zinc were barely detected. At the second stage, when river discharge was composed primarily by surface flow from the entire watershed, cadmium, lead, copper and zinc concentrations grew rapidly up to max level of 1.80,2.34,6.18 and 52.57 μg/L, respectively. At the third stage, when flood began to recede and river flow was mainly affected by shallow groundwater, copper, zinc and cadmium concentrations dropped somewhat, but lead level was still above the normal level, while zinc, copper and cadmium concentrations were below the normal level. In the fourth stage, when river flow was mainly from deeper groundwater, copper and zinc concentrations dropped below the detection level, while cadmium level continued to fall, lower than the third stage but still higher than the normal level despite continuous dropping. Correlative analysis showed that dissolved metal concentrations (lead, zinc, copper and cadmium) were significantly correlated with turbidity and river flow (P<0.01). The same pattern was also found among zinc, copper and cadmium species concentrations, where Pearson coefficients were above 0.85 (P<0.01).