New Land Use Data Resource Now Available

Updated: Jan 8

Land IQ is excited to share a valuable new data resource recently released by the California Department of Water Resources (DWR). Since 2016, Land IQ has worked in cooperation with DWR to create publicly available statewide land use maps of agriculture, urban and managed wetlands, among other land use types. This statewide data resource has been developed to support the needs of the Sustainable Groundwater Management Act (SGMA). The intent of this work is for all Groundwater Sustainability Agencies (GSAs) to use this data as a consistent foundational land use layer in developing their groundwater sustainability plans (GSPs).

Land use for the 2016 crop year is now publicly available for viewing and download. The 2016 classification is in addition to the previously released 2014 crop year, and categorizes over 14.8 million acres of land use into approximately 50 types with 97.6% accuracy. Field by field classification resulted in over 390,000 individually classified polygons with a minimum field size of 0.5 acres. The following table represents a summary of classes represented on DWR’s Land Use Viewer:

Beyond SGMA, these data are essential for regional analysis and decision making, which has become increasingly important to address resource management, environmental impacts, ecosystem services, urban and economic development and other issues. Accurate and timely land use information is the foundation of these analyses and is vital to accurate decision processes.

Understanding the importance of timely land use information, Land IQ continues this work with the DWR, to provide these valuable mapping data. The following activities are in progress:

  • 2017/2018 Hydrologic Year: Includes multi-cropping, currently finishing up classifications

  • 2018/2019 Hydrologic Year: Includes multi-cropping, ground truthing has concluded, beginning classifications

  • 2019/2020 Hydrologic Year: Includes multi-cropping, ground truth activities have begun

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