{"version":"1.0","type":"link","title":"Main stem - Newikis","description":"In hydrology, a main stem or mainstem (also known as a trunk) is \"the primary downstream segment of a river, as contrasted to its tributaries\". The mainstem extends all the way from one specific headwater to the outlet of the river, although there are multiple ways to determine which headwater (or…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/c/c3/Mississippiriver-new-01.png/1280px-Mississippiriver-new-01.png","thumbnail_width":1280,"thumbnail_height":1173}