This template is most commonly invoked by one of the User interest Body of Water templates which supply the parameters for this template to function as a metatemplate.
{{user in body of water|option=|water=|simple=|inflect=|the=|title=|adj=|main=|member=|nocat=|ci=|cp=|cion=|cpon=|align=|color=|image=|width=|border-c=|id=|id-a=|id-c=|id-w=|info=|info-c=|info-fc=|info-lh=|info-s=|wp-s=}}
where:
option= the option number (default=1, see the Options table below)
water= the required body of water name as listed in Wikipedia
simple= the simplified form of the body of water name if different (default={{{water|}}})
inflect= the inflected form of the body of water name if different (default={{{water|}}})
the=the places a "the " before the body of water name (default=null)
wrap=wrap allows a multi-word water name to break between lines (default=null)
title= the fully formatted water title to be used in the userbox (default={{#if:{{{the|}}}|the }}[[{{{water|}}}|'''{{#if:{{{wrap|}}}||<span style="white-space:nowrap">}}{{{inflect|{{{simple|{{{water|}}}}}}}}}{{#if:{{{wrap|}}}||</span>}}''']])
activity= is an optional verb phrase for option 1 (default=is interested in)
project= the root name of the responsible regional WikiProject (default={{{simple|{{{water|}}}}}})
member= the type of regional WikiProject membership:
member=member (default)
member=participant
member=volunteer
member=other
ci= the root name of the interest in body of water user category
cp= the root name of the body of water WikiProject membership category
cion=yes declares the user page a member of the interest in body of water user category
cpon=yes declares the user page a member of the body of water WikiProject membership category
nocat=true disables the declaration of any user categories
