Canals
– Number: 165
– Total length: 75 kilometres
– Widest: Keizersgracht, 31 metres
– Longest: Singel, 6.3 kilometres
– Oldest: Oudezijds Voorburgwal, 1385
– Houseboats: approximately 2,500
– Bridges: more than 1,500

Canal water
– Oxygen content: 5-10 milligrams per litre
– Average depth: 2 metres
– Visibility: less than one metre
– Level: 0.4 metres below Standard
Amsterdam Water Level

Annual waste collected
– 40,000 to 60,000 kilograms of plastic
– 12,000 bicycles
– 7,000 dead animals