{ "culture": "en-US", "name": "i15_LandUse_Imperial1997", "guid": "32857FEF-6A47-44C5-9A59-C404C8B1B526", "catalogPath": "", "snippet": "This data was developed to aid in DWR\u2019s efforts to continually monitor land use for the main purpose of determining the amount of and changes in water use.", "description": "

The 1997 Imperial County land use survey data set was developed by DWR through its Division of Planning and Local Assistance (DPLA). The data was gathered using aerial photography and extensive field visits, the land use boundaries and attributes were digitized, and the resultant data went through standard quality control procedures before finalizing. The land uses that were gathered were detailed agricultural land uses, and lesser detailed urban and native vegetation land uses. The data was gathered and digitized by staff of DWR\u2019s Southern District. Quality control procedures were performed jointly by staff at DWR\u2019s DPLA headquarters and Southern District. Important Points about Using this Data Set: 1. The land use boundaries were either hand drawn directly on USGS quad maps and then digitized, or digitized on-screen using corrected imagery. They were drawn to depict observable areas of the same land use. They were not drawn to represent legal parcel (ownership) boundaries, or meant to be used as parcel boundaries. 2. This survey was not a \"snapshot\" in time, but incorporated three field visits for agricultural areas. The original land use attributes of each delineated area (polygon) were based upon the surveyor\u2019s observations in the field at those times, and are reflected in the quad DWG and shapefiles. For the survey-wide shapefile 97IM.shp, the attributes are the interpreted results. 3. If the data is to be brought into a GIS for analysis of cropped (or planted) acreage, two things must be understood: a. The acreage of each field delineated is the gross area of the field. The amount of actual planted and irrigated acreage will always be less than the gross acreage, because of ditches, farm roads, other roads, farmsteads, etc. Thus, a delineated corn field may have a GIS calculated acreage of 40 acres but will have a smaller cropped (or net) acreage, maybe 38 acres. b. Double and multicropping must be taken into account. A delineated field of 40 acres might have been cropped first with grain, then with corn, and coded as such. To estimate actual cropped acres, the two crops are added together (38 acres of grain and 38 acres of corn) which results in a total of 76 acres of net crop (or planted) acres. 4. Water source and irrigation method information were not collected for this survey. 5. Not all land use codes will be represented in the survey.<\/SPAN><\/P>

The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.4, dated September 2022. DWR makes no warranties or guarantees - either expressed or implied - as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. See the CADWR Land User Viewer (gis.water.ca.gov/app/CADWRLandUseViewer) for the most current contact information. Comments, problems, improvements, updates, or suggestions should be forwarded to gis@water.ca.gov.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "summary": "This data was developed to aid in DWR\u2019s efforts to continually monitor land use for the main purpose of determining the amount of and changes in water use.", "title": "i15_LandUse_Imperial1997", "tags": [ "biota", "Survey", "Land use", "Agriculture", "Boundaries", "Ground truth", "1997", "Digital imagery", "Vector", "Raster", "Image classification", "California", "Crop", "Satellite imagery", "Cadastral", "Imagery", "Imperial County", "Global Positioning System (GPS)", "Multispectral", "Analysis", "Survey year", "Landsat", "Irrigation", "NDVI", "Orthorectification", "Urban", "Residential", "Orthoimagery", "Native vegetation", "Vineyard", "Imperial County", "California" ], "type": "Map Service", "typeKeywords": [ "Data", "Service", "Map Service", "ArcGIS Server" ], "thumbnail": "thumbnail/thumbnail.png", "url": "", "extent": [ [ -116.125861058835, 32.6250547753875 ], [ -114.375789622003, 33.500033051105 ] ], "minScale": 0, "maxScale": 1.7976931348623157E308, "spatialReference": "WGS_1984_Web_Mercator_Auxiliary_Sphere", "accessInformation": "California Department of Water Resources, Division of Regional Assistance (DRA), Southern Regional Office, Land and Water Use and Conservation Section, and Water Use Efficiency Branch (Sacramento Headquarters).", "licenseInfo": "

The attached information was developed by the State of California, Department of Water Resources, for uses beneficial to the State. The information is available upon request to interested members of the public. While the Department believes the information to be reliable and made efforts to assure its reliability at the time the information was compiled, the information is provided \"as is\". The Department is not responsible for the accuracy, completeness, quality or legal sufficiency of the information. Any expressed or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for purpose ARE SPECIFICALLY DISCLAIMED. Neither the Department nor the State of California shall be held liable for any direct, indirect, incidental, special, exemplary or consequential damages (including, but not limited to: procurement of substitute goods or services; loss of use, data or profits; or business interruption), however caused and on any theory of liability, whether in contract, strict liability or tort, arising in any way out of the use of this information. This disclaimer applies to use of the information alone and to its aggregate use with other information, data or programs. The State of California and the Department of Water Resources hereby specifically retain any intellectual property interest, including copyright that they may hold in the information provided, whether the information is in the form of data, files, text images, photography or maps. The Department requests that persons receiving and using this information not make it available to others for their re-use. Instead, interested third parties should be encouraged to contact the Department for copies, in order to ensure that the information is obtained from the source that developed it, that can provide the greatest degree of reliability. Please acknowledge the California Department of Water Resources as a source when DWR's data are used in the preparation of reports, publications, maps and other products.<\/SPAN><\/P><\/DIV><\/DIV><\/DIV>" }