"operator"=>"Waterschap Hollandse Delta","ref"=>"03506ST"
"material"=>"concrete","operator"=>"Gemeente Hoeksche Waard","ref"=>"30775ST"
"material"=>"concrete","operator"=>"Waterschap Hollandse Delta","ref"=>"03504ST"
"operator"=>"Waterschap Hollandse Delta","ref"=>"03507ST"
"actuator"=>"manual","material"=>"steel","operator"=>"Waterschap Hollandse Delta","ref"=>"20551ST","weir:movable"=>"yes"
"actuator"=>"manual","material"=>"concrete","operator"=>"Waterschap Hollandse Delta","ref"=>"30322ST","weir:movable"=>"yes"