Controlled by Lake Greenwood Management under the direction of Greenwood County. The Rule Curve is a Federally mandated guide for water levels in Lake Greenwood. The Rule Curve stipulates where the lake level should be during the year. Full pond is considered 439. County lowers the lake level beginning end of October to 434.50 and beginning rising it late January. This provides time for work to be done on seawalls and docks.