20260303 14141700 1.0 TRUE 150000000 5000 ItemDescription Irrigated Crop Areas - Richmond winter <DIV STYLE="text-align:Left;"><DIV><DIV><DIV STYLE="font-size:12pt"><P><SPAN>This dataset contains a satellite observed timeseries of the extent of winter irrigated crop areas in NSW from present day, back to 1987. </SPAN></P><P><SPAN>Observations have been derived from medium-resolution multi-spectral satellite imagery (30m/pixel Landsat with a 16 day return interval and 10 m/pixel Sentinel-2 with a 5 day return interval). </SPAN></P><P><SPAN>The presence of irrigated crops is identified using established vegetation‑condition indicators commonly referenced in remote‑sensing literature to assess crop vigour and water‑stress patterns. Additionally, Earth observation–derived evapotranspiration datasets are incorporated to support the estimation of irrigated crop areas, improving the distinction between irrigated and non‑irrigated agricultural land. </SPAN></P><P><SPAN>Expert opinion is then applied to qualify whether a field was irrigated, based on its greenness relative to the surrounding landscape throughout the winter season (May to October). The polygons are delineated in a semi-supervised manner and are accurate to the closest hectare.</SPAN></P><P><SPAN>A metadata and data quality statement is available in the Documents section of the dataset homepage on the NSW SEED portal.</SPAN></P></DIV></DIV></DIV></DIV> NSW Department of Climate Change, Energy, the Environment and Water This product provides a timeseries of earth observation derived (Landsat and Sentinel satellites) location and extent of NSW winter season irrigated crops, from 1987 to the present day updated on an ongoing basis for the selected catchments. <DIV STYLE="text-align:Left;"><DIV><DIV><DIV STYLE="font-size:12pt"><P><SPAN><SPAN>This data forms part of the corporate database of the Department of Climate Change, Energy, the Environment and Water, NSW Government, Australia. </SPAN></SPAN></P><P><SPAN><SPAN>This data is to be used as a general guide for regional and local scale natural resource planning and management only, not for the assessment of specific sites which can only be assessed by investigations specific to those sites. This data is published by the Department of Climate Change, Energy, the Environment and Water – Water (DCCEEW – Water). </SPAN></SPAN></P><P><SPAN><SPAN>Whilst every reasonable effort has been made to ensure the accuracy of the information contained in these datasets and services, you should satisfy yourself as to the accuracy of the information before relying on it. The State of New South Wales, its agents and employees, disclaim any and all liability to any person in respect of anything or the consequences of anything done or omitted to be done in reliance upon the whole or any part of this data. </SPAN></SPAN></P></DIV></DIV></DIV></DIV> Irrigated Crop Areas DCCEEW Water Earth Observation 20260325