Assertion details
Summary
river's discharge be liable 1 to become quite small
1 triples in cluster
discharge be liable to become quite small 1
1 source sentences
Source: Shown
Subject: Shown
Predicate: Shown
Object: Shown
Facet: Shown
  • 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 .