20250924 17053200 1.0 TRUE California Department of Water Resources (DWR), Water Use Efficiency Implementation Section (916) 653-5791 1416 9th St Sacramento CA 95814 US 20230630 ArcGIS Metadata 1.0 Open Water 2023-11-01 California Department of Water Resources (DWR) vector digital data 2020/2021 Open water delineation for the California Department of Water Resources (CADWR). The spatial extent of the polygons in this dataset match the boundary of the urban retail water supplier. The open water polygons contained in this dataset are created from two source datasets: modeling of 2020 4-band 1-foot aerial imagery and 2020-2021 water feature layer from the NOAA Coastal Change Analysis Program (C-CAP) (https://coast.noaa.gov/digitalcoast/data/ccaphighres.html). Polygons with an EDITED = 0 label have not been manually reviewed or edited. The mmu for EDITED = 0 objects is 0.1 acres. Polygons with an EDITED = 1 label were manually reviewed and edited during the production of the Land Use Cover Dataset (LUCD). The minimum mapping unit (mmu) for EDITED = 1 objects is 64 square feet. The mmu is adhered to during manual review and editing of EDITED = 1 objects, though polygons smaller than this may occur in the dataset and remain as artifacts from the modeling process. This dataset was generated as part of the California Department of Water Resources (DWR) Agreement #4600015006. Under the DWR Agreement #4600015006, and as part of the response to the State Water Resources Control Board (State Control Board) Drought Emergency Regulation (California Code of Regulations [CCR] Section 996), new requirements for urban retail water suppliers under California Water Code (Water Code) Section 10609.10(d)(2), and DWR's responsibility to provide technical assistance, including data, to urban retail water suppliers (Water Code Section 10609.26(a)(4)). DWR partnered with NV5 (NV5) to provide timely and necessary CII landscape area measurement (LAM) data: A. To urban retail water suppliers for their use in managing CII outdoor water use during drought and long-term resilience, and B. For the State of California (State) analysis of CII landscape water use and conservation potential during drought and for long-term efficient water management. NV5, 1100 NE Circle Blvd. Suite 126 Corvallis, OR 97330 (541) 752-1204 LUCD California Department of Water Resources Land Use Cover Dataset CADWR Water environment ISO 19115 Topic Categories LUCD California Department of Water Resources Land Use Cover Dataset CADWR Water environment This land cover data may not be used for the purpose of creating, training, improving, modifying, validating, testing, or evaluating machine learning algorithms, or otherwise leverage the product for the purposes of machine learning for a period of five years from its date of creation. By downloading this data you are agreeing to this restriction. The California DWR provides this data to URWSs to support compliance with State Water Resources Control Board Drought Emergency Regulations. The California DWR acknowledges that since this dataset was generated using 1-ft resolution 2020 imagery and spatial information representing the supply area from the URWS, the accuracy of this dataset compared to actual ground conditions is dependent on this source information. The California DWR encourages URWSs to use this data as a tool in conjunction with other tools to best support their compliance with the State Water Resources Control Board Drought Emergency Regulations. Version 6.2 (Build 9200) ; Esri ArcGIS 10.3.1.4959 true -118.206904 -118.093007 33.825988 33.743279 2020 2023-05-05 2023-11-01 The portion of this product where EDITED = 1 was assessed for accuracy as a part of the LUCD dataset. No accuracy assessment was performed on the EDITED = 0 portion of this product. Data is complete as of publication. The dataset was created using imagery with 1-foot resolution. For the EDITED = 1 component of this dataset, the objects were generated using a modeling process which began by applying a pretrained convolutional neural network model on the 2020, 4-band, 1-foot resolution orthophotography of the area of interest. The data is then manually reviewed by photo interpreters to address model errors. For the EDITED = 0 component of this dataset, the objects were generated by combining the unedited land cover model outputs for 2020 imagery and the 2020-2021 high resolution landcover product from NOAA (https://coast.noaa.gov/digitalcoast/data/ccaphighres.html). Other processes, such as smoothing, removal of sliver polygons, topology checks, and other data clean-up routines are run as needed to generate the desired final product. 2023-11-01 67058 Open_Water Open Water Polygons NV5 FID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. EDITED Binary integer value indicated whether the object was reviewed and edited by a human photo interpreter. NV5 0 Object was not edited (automatically generated only) NV5 1 Object was reviewed by a human photo interpreter NV5 AREA_SF Area of the feature in square feet. NV5 Non-negative numeric value IMG_YEAR Year of the 4-band imagery that was used to derive the data. NV5 2020/2021 2020/2021 NV5 SUPPLIER Urban retail water supplier name. NV5 Unique identifier. ORG_ID Urban retail water supplier organization ID. NV5 Unique identifier. LAST_MOD The date this dataset was last updated. Used for version control NV5 Date values (oldest from 2023) SHAPE Feature geometry. Esri Coordinates defining the features. Shape_Area Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Shape_Length Length of feature in internal units. Esri Positive real numbers that are automatically generated.