Combined regional flood hazards extent for rivers and streams in the Wellington Region. Data supplied in Feb 2017 from GWRC Flood Protection Dept for the GWRC public flood hazard maps project. Extra extent data supplied by KCDC and WCC was added in May 2017. If you want more information about Flood Risk in the Western part of the Region, please contact Greater Wellington Regional Council on 04 830 4084. If you want more information about Wairarapa Valley Flood Risk please contact Greater Wellington Regional Council's Masterton office on 06 378 2484.