Great initiative in Toronto by the Toronto Field Naturalists and the Toronto Green Community:
The objective of Lost River Walks is to encourage understanding of the city as a part of nature rather than apart from it, and to appreciate and cherish our heritage. Lost River Walks aims to create an appreciation of the city's intimate connection to its water systems by tracing the courses of forgotten streams, by learning about our natural and built heritage and by sharing this information with others.
The Toronto Green Community started Lost River Walks to help us discover the fascinating world of the watershed beneath our feet. This site is the start of a field book on the lost streams of Toronto. Bits of our city's history, both natural and built, are included. Those interested can take a virtual lost creeks walk, or better, use the information to take a self-guided tour. Come explore nature hidden under our city and along its ravines and byways.
The next walk is scheduled for April 15th (as part of the Thirsty City Walks) - this Sunday - so check them out!