ginny jones with sce&g says there has been a lot of interest in the river and the water levels following the october flood. lake murray sits above the saluda river...meaning water released from the dam goes there. "so when we operate at saluda hydro we release water into the lower saluda river and so the sirens are designed to let someone who might be boating or swimming on the river so they'll know that there will be a change in the water level."those sirens are something john derrick and his friends appreciate. on wednesday they were out on the saluda river and took notice to the higher water levels. "in the back of our minds we're always taking precautions. we never boat alone, we're always wearing our life jacket and helmet and we take as many safety precautions as possible."in a statement from sce&g they said that they will be opening one spill gate...releasing up to an additional 18,000 cubic feet per second inflow...and say that residents will take notice to lake levels continuing to rise, but they will not exceed the 360 licensed operating level...meaning the level set by the fed