The ridge marks the watershed between drainage westward to Cardigan Bay and eastward to the Rivers Severn and Wye, flowing toward England and ultimately the Bristol Channel.
To the east the structural trough is crossed by the Meskhet and Likh ranges, linking the Greater and Lesser Caucasus and marking the watershed between the basins of the Black and Caspian seas.
The year marking the watershed year is determined by the initiation of an important project, such as a major bridge, freeway or railway line.
April 19 , 2013marked the watershed moment of the campaign, when major online media outlets simultaneously launched special "hotline" webpages to solicit from the public information or "tips" on corrupt officials.
But even those trillions could not save Lehman Brothers, whose September 2008 bankruptcy declaration marked the watershed moment in the financial crisis.
The confluence of the Bull Run and Sandy rivers at Dodge Park, about 20 mile east of downtown Portland, marks the watershed's western (downstream) end, while on the east it borders Hood River County, and at Hiyo Mountain it is about 6 mile northwest of Mount Hood in the Cascade Range.
The pass marks the divide between the watersheds of the Adriatic and Black seas and between the Rhaetian and Ötztal Alps.
If I were to offer advice as U.N. secretary general, it would be to focus on three "clusters" of outcomes that will mark Rio+20 as the watershed that it should be.
In Asia the road passed through Samarkand to the region of Fergana, where, near the city of Osh, a stone tower marked the symbolic watershed between East and West.
There are those who think the events of 2007-08 mark a watershed, the end of a period of phoney growth based on debt, over-exploitation of the planet and the last gasp of technologies approaching obsolescence.
