Occurrence of Attributes in Original Text

The text related to the cultural heritage 'The English Lake District' has mentioned 'Tributaries' in the following places:
Occurrence Sentence Text Source
Most of these valleys display the U-shaped cross-section characteristic of glacial origin, and often contain elongate lakes occupying sizeable bedrock hollows, with tracts of relatively flat ground at their infilled heads, or where they are divided by lateral tributaries (Buttermere-Crummock Water; Derwent Water-Bassenthwaite Lake).
The Lake District extends to the coast of the Irish Sea from Drigg in the north to Silecroft in the south, encompassing the estuaries of the Esk and its tributaries, the Irt and the Mite.