"material"=>"wood","operator"=>"Waterschap Hollandse Delta","ref"=>"03395ST","weir:movable"=>"yes"
"operator"=>"Waterschap Hollandse Delta","ref"=>"03507ST"
"material"=>"concrete;iron","operator"=>"Waterschap Hollandse Delta","ref"=>"09268ST"
"official_name"=>"Stuw Tweede Kruisweg t.h.v. huisnr. 3","operator"=>"Waterschap Hollandse Delta","ref"=>"30580ST"
"material"=>"concrete","official_name"=>"Stuw Molendijk 3p","operator"=>"Waterschap Hollandse Delta","ref"=>"12789ST"
"material"=>"wood","official_name"=>"Stuw Simonsdijkje Puttershoek","operator"=>"Waterschap Hollandse Delta","usage"=>"spillway"
"material"=>"wood","official_name"=>"Stuw noordzijde Molendijk Puttershoek","operator"=>"Waterschap Hollandse Delta","ref"=>"12788ST"
"material"=>"pvc","operator"=>"Waterschap Hollandse Delta","weir:movable"=>"yes"
"operator"=>"Waterschap Hollandse Delta","ref"=>"45685ST"
"material"=>"concrete;steel","operator"=>"Waterschap Hollandse Delta","ref"=>"30755ST","weir:movable"=>"yes"
"operator"=>"Waterschap Hollandse Delta","ref"=>"29541ST"