impoundedToForm

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: impoundedToForm

Indicates that something (typically water) is collected and held back, usually by a barrier or structure, in order to create or form another entity such as a reservoir, lake, or pond.