How wide is the estuary at whitstable and fouleness point?

The estuary between Whitstable and Foulness Point, known as the Swale, varies in width. Generally, it measures around 1 to 3 miles (1.6 to 4.8 kilometers) across at its widest points. However, the precise width can fluctuate due to tidal changes and other environmental factors. For more specific measurements, local charts or surveys would provide detailed information.