The harbour supports roughly 15% of the national population of dark-bellied brent geese during the winter months.
It is a drowned river valley, formed after the last Ice Age as sea levels rose and flooded the existing river system.
The harbour entrance is narrow, creating strong tidal streams that can reach speeds of up to 4 knots.
It remains a significant centre for classic boat building and traditional yacht maintenance in the UK.
The mudflats contain high levels of organic matter, supporting a vast population of invertebrates that sustain the local bird population.
Local laws strictly govern the speed of motorized craft within the harbour to protect the shoreline from erosion caused by boat wash.
Chichester Harbour is one of the few remaining undeveloped coastal areas in Southern England, characterized by its extensive tidal mudflats, salt marshes, and shingle spits. As an Area of Outstanding Natural Beauty and a Site of Special Scientific Interest, it serves as a critical habitat for thousands of migratory birds, particularly in winter. The harbour covers approximately 3,000 hectares of water and land, featuring a complex network of channels used primarily by recreational sailors. It is managed by the Chichester Harbour Conservancy, which oversees environmental protection and navigation. The shoreline is punctuated by small villages like Itchenor, Bosham, and Emsworth, each retaining historic maritime architecture. The landscape is predominantly flat, providing expansive views across the Solent toward the Isle of Wight. It functions as a working harbour, maintaining active boatyards and mooring facilities despite its protected status. Public access is facilitated through a network of public footpaths and coastal trails that border the intertidal zones.
The elevated footpath at Bosham looking across the harbour toward the historic church at sunset.
Check tide tables before exploring the shoreline, as many footpaths become inaccessible during high tide.
Bring binoculars for birdwatching, especially if visiting between late autumn and early spring.
Wear waterproof footwear, as coastal paths can be muddy even in dry weather.
Attempting to walk across mudflats at low tide; the silt is deep and poses a significant entrapment risk.
Keep dogs on leads during bird nesting seasons and avoid walking on sensitive salt marsh vegetation.
