Data hosted on data.gov.au

Under the NSW DPIE-EES Environmental Water Management Program the distribution and extent of inundation is monitored in large inland floodplain wetland assets which are targeted for environmental flow delivery and located in the NSW portion of the Murray-Darling Basin: Gwydir wetlands, Lowbidgee floodplain, Lower Lachlan wetlands, Macquarie Marshes, and Barmah-Millewa Forest. Inundation maps are derived from image observations sourced from the satellite data sources of Landsat (30m pixel) and Sentinel-2 (10m pixel) for the period July 2014-June 2019. Image observations are automatically downloaded by NSW DPIE from the USGS (Unites State Geological Survey’s Earth Explorer website (http://earthexplorer.usgs.gov ) and the Copernicus Sentinel Open Access Hub (https://scihub.copernicus.eu/dhus/#/home ) as orthorectified images. NSW DPIE process these images to standardised surface reflectance (Flood et al. 2013). Image observations with high cloud coverage (>50%) are not considered because they cannot be processed. The inundation mapping procedure is a modified version of Thomas et. al (2015) which is a method to map inundation in vegetated floodplain wetlands using an integrated spectral response to water and vigorous vegetation. From each satellite image observation NSW DPIE-EES automatically generates a water index (Fisher et al. 2016) and the NDVI vegetation index. These indices are used to allocate inundated pixels to classes of open water, mixed water and vegetation, and dense vegetation cover that was inundated (Thomas et al. 2015). A process of pixel recoding is conducted to produce each inundation map. First all inundation classes are merged and allocated a value of one (1) whilst all other pixels are allocated a value of zero (0). Second, ancillary data is then used to identify irrigation infrastructure to do two things: locate inundated pixels within off-river storages (ORS) by recoding to a value of (2) and to remove cropped areas that have similar spectral properties to wetland vegetation by coding the pixels to a value of zero (0). Third, for observation dates affected by cloud shadow, which is often incorrectly detected as water, pixels are manually reclassified as cloud shadow by recoding them to a value of three (3). The final inundation classes are inundated (1), off-river storages with water (ors) (2), cloud shadow (3), and not inundated (0). Final inundation maps are clipped to the inland floodplain wetland boundaries. The naming format of the files are: Wetland_date _sensor_inundation1_ors2_cloud3.tif or Wetland_path_date _sensor_inundation1_ors2_cloud3.tif Wetland: bm = Barmah Millewa floodplain gw = Gwydir floodplain lachlan = Lachlan floodplain lo = Lowbidgee floodplain mm = Macquarie Marshes floodplain Path: Specific to the Lachlan Date: Satellite image date processed Sensor: Sensor type- l7 (Landsat7; l8 (Landsat 8); s2 (Sentinel2) Inundation1: Inundated ors2: Off-River Storage with water cloud3: Cloud shadow (in filename if present) References: Fisher, A., Flood, N. and Danaher, T. (2016). Comparing Landsat water index methods for automated water classification in eastern Australia. Remote Sensing of Environment, 175, 167-182. Flood, N., Danaher, T., Gill, T., & Gillingham, S. (2013). An operational scheme for deriving standardised surface reflectance from Landsat TM/ETM+ and SPOT HRG imagery for eastern Australia. Remote Sensing, 5, 83–109. Thomas, R. F., Kingsford, R. T., Lu, Y., Cox, S. J., Sims, N. C. and Hunter, S. J., (2015). Mapping inundation in the heterogeneous floodplain wetlands of the Macquarie Marshes, using Landsat Thematic Mapper. Journal of Hydrology 524, 194-213.

Flood Extents shows the areas inundated by water during different flood / dam break scenarios. This dataset was developed from studies undertaken by Hydro Tasmania, Hobart Water and DPIW.

하천범람지도는 홍수 발생 시 예상되는 범람지역으로 빈도 별(100년) 침수 지역을 면 형태로 작성한 자료로 한강홍수통제소에서 원시 자료를 제 공받아 제공처 기준 등급을 적용하여 제공합니다. 해당 정보는 하천 수위가 상승 했을 때, 주변 지역의 범람 및 침수 예상 구역을 시뮬레이션 한 자료로 재난 예방과 재난 대응 계획 수립에 활용됩니다. 생활안전지도 내 지도서비스를 통해 전국 하천을 기준으로 면 형태의 공간정보로 제공하고 있으며, 침수 깊이에 따라 등급 별 색깔로 표현합니다. 해당 서비스에서 제공하는 정보는 지도 상에 표시가 가능한 구역들에 대한 공간 정보이며, 국가하천과 지방하천을 나누어 WMS 형태로만 서비스하고 있습니다.

전라남도 영광군 디지털트윈 재난대응체계 시스템을 통해 구축된 도시침수정보 데이터입니다.도시침수정보는 극한 강우 시 발생 가능한 침수 상황을 정밀하게 예측·분석하고, 침수 취약 지역에 대한 선제적 대응을 위해 구축된 자료입니다.관측단위별 임계치 정보, 월별 및 일별 침수 이력, 침수 메모, 임계치 테이블 등으로 구성되어 있으며, 침수심, 강우량, 유역 특성, 배수계획 등을 종합적으로 반영합니다.재해 위험지역 사전 예측, 실시간 경보 시스템 연계, 대응 전략 수립, 침수위험지도 제작, 하수도 정비계획 및 도시방재 인프라 구축 등 재난예방 행정과 스마트 도시계획에 다양하게 활용됩니다.

The Queensland Flood Mapping Program is part of the State Government's response to the Queensland Floods Commission of Inquiry. It was completed by the Department of Resourcesin 2014-2015 to undertake flood investigations for high risk flood prone townships across the State. Datasets may include historic and/or modelled events (e.g. AEP 1% or Q100)

홍수 등 수문기상 재해 대응 및 물관리 유관기관 지원을 위한 유역별 맞춤형 강수량 예측정보를 생산합니다. 세부 사항은 기상청 수문기상 가뭄정보 시스템(https://hydro.kma.go.kr)을 참고하여 주시기 바랍니다.

This Geoscience Australia created and EMSINA hosted webservice is a single aggregated view of all the requested EMS Copernicus flood footprints for the NSW Flood Event (March 2021).IMPORTANT: the flood footprints represented in this webservice is not a complete State Wide Flood Footprint. The data aligns to specific areas of interest that were requested of EMS Copernicus. All the EMS data layers and derived products are available here: https://emergency.copernicus.eu/mapping/list-of-components/EMSR504Questions: kane.orr@ga.gov.au