DOLLY SHOT along giant seaway model. CU of water in channel of model, TILT UP to shot of model and two men working on it. Shots of men working on model, taking down data, of model itself, men adding parts to model. Shot of sign on island in middle of river of model re "natural 310 000", TILT UP to CU of markers floating down channel, tracing path of waterflow and currents. MCS of two men lighting candles on markers and releasing markers. DOLLY SHOT along channels and canals of model.