Water in New Zealand and are of varying types and origins. Many of the lakes in the central North Island area are volcanic crater lakes, while the majority of the lakes near the Southern Alps were carved by glaciers. Hydroelectric reservoirs are common in South Canterbury, Central Otago and along the Waikato River. Over 180,000 kilometres of rivers has been mapped in New Zealand, the longest being the Waikato River with a length of 425 kilometres and the largest river by volume is the Clutha River with a mean discharge of 533 cubic metres per second. New Zealand has many notable waterfalls, some of
New Zealand Top 50 singles of 2009 New Zealand Top 50 singles of 2009 This is a list of the Top 50 singles in 2009 in New Zealand, as listed by the Recording Industry Association of New Zealand (RIANZ). Smashproof's "Brother" was the longest-running song in 2009, peaked at number one in eleven weeks in a row. The Black Eyed Peas's "I Gotta Feeling" and Keri Hilson's "Knock You Down" behind "Brother" for longest-running at number one, with 9 weeks and 6 weeks. Beyoncé's "Halo" was the longest-running in the chart this year, spent 33 weeks inside the chart. Black Eyed Peas' "I Gotta Feeling" and Smashproof's