3 ms·When choosing 'Navigable by boat', the massive Trent-Severn system in Southern Ontario disappears.by Jemm 3y agoWhen choosing 'Navigable by boat', the massive Trent-Severn system in Southern Ontario disappears.Thedarkb 3y agoWell, it's probably worth your while to update it then.rmc 3y ago(I made WaterwayMap.org) The data is 100% OpenStreetMap, and updated daily. Something missing on WWM.org means something missing on OSM. You can fix that yourself!