Assertion details
Summary
river's stage be 2 low
1 triples in cluster
stage be low 2
2 source sentences
Source: Shown
Subject: Shown
Predicate: Shown
Object: Shown
Facet: Shown
  • SRC In tropical countries subject to periodical rains , the rivers are in flood during the rainy season and have hardly any flow during the rest of the year , while in temperate regions , where the rainfall is more evenly distributed throughout the year , evaporation causes the available rainfall to be much less in hot summer weather than in the winter months , so that the rivers fall to their low stage in the summer and are very liable to be in flood in the winter .
  • SRC Rivers whose discharge is liable to become quite small at their low stage , or which have a somewhat large fall , as is usual in the upper part of rivers , can not be given an adequate depth for navigation purely by works which regulate the flow ; their ordinary summer level has to be raised by impounding the flow with weirs at intervals across the channel , while a lock has to be provided alongside the weir , or in a side channel , to provide for the passage of vessels .