Editing Guelph (section)

===Topography and water courses===
Downtown Guelph is situated above the confluence of the [[Speed River]] and the [[Eramosa River]], which have numerous tributaries. The Speed River enters from the north and the Eramosa River from the east; the two rivers meet below downtown and continue southwest, where they merge with the [[Grand River (Ontario)]]. There are also many creeks and smaller rivers creating large tracts of densely forested ravines, and providing ideal sites for parks and recreational trails. The city is built on several [[drumlin]]s and buried waterways, the most notable being an underground creek flowing below the Albion Hotel, once the source of water used to brew beer. Guelph is the largest Canadian city to rely almost entirely on groundwater for its drinking supply, which is sourced from two main aquifers.<ref>{{Cite web |title=Guelph's water supply |url=https://guelph.ca/living/environment/water/groundwater/ |access-date=October 17, 2023 |website=City of Guelph |language=en-CA}}</ref>