Lake Hartwell water depth is 659.78 (full pool is 660.00). The weather is expected to really improve starting Monday (4/16). Its time to get dust off your camping gear and get your boat to the lake. Iron Harbor Storage offers great facilities to store your boat, RV, camping and fishing equipment between visits to the Lake. And our new pump station at Storage 1 is now available to ALL Iron Harbor Storage tenants at no charge.