WHEATFEN Broad near Surlingham is a good fifteen miles from the coast, so we tend to forget it is tidal. But as these two pictures make clear, the sea exerts its power a long way inland. The top photo was taken on Sunday lunchtime, the bottom is the more usual scene. Sunday was a particularly high tide across the Broads with much of Wheatfen impassable to those of us without wellies. It is a strange feeling to feel the boardwalk sink below the waterline with every step you take.