Waterways

Please map all waterways, including lakes and rivers.

https://cloud.githubusercontent.com/assets/11095450/13329895/6db3b650-dbc4-11e5-91af-63082ef2a03f.png
https://cloud.githubusercontent.com/assets/11095450/13329898/7100c1b8-dbc4-11e5-8462-4bdf39491802.png
https://cloud.githubusercontent.com/assets/11095450/13330124/51f40482-dbc5-11e5-923c-276a0b0fb7e6.jpg