The water level at Lake Oroville is rising to its highest level in nearly three weeks. The gates to the reservoir’s main spillway were closed back on February 27th so that crews could work on removing a massive pile of debris at its base. On Wednesday evening, the lake neared 860 feet — a level managers had earlier said they did not expect to reach during the spillway closure. The lake’s capacity tops off at 901 feet. California Department of Water Resources Spokeswoman Lauren Bisnett says the elevated level is being closely monitored.