20220610 09470100 1.0 TRUE TRUE i15_LandUse_SanJoaquin2017 <DIV STYLE="text-align:Left;"><DIV><P><SPAN>This data represents a land use survey of San Joaquin County conducted by the California Department of Water Resources, North Central Region Office staff. Land use field boundaries were digitized with ArcGIS 10.5.1 using 2016 NAIP as the base, and Google Earth and Sentinel-2 imagery website were used as reference as well. Agricultural fields were delineated by following actual field boundaries instead of using the centerlines of roads to represent the field borders. Field boundaries were not drawn to represent legal parcel (ownership) boundaries and are not meant to be used as parcel boundaries. The field work for this survey was conducted from July 2017 through August 2017. Images, land use boundaries and ESRI ArcMap software were loaded onto Surface Pro tablet PCs that were used as the field data collection tools. Staff took these Surface Pro tablet into the field and virtually all agricultural fields were visited to identify the land use. Global positioning System (GPS) units connected to the laptops were used to confirm the surveyor's location with respect to the fields. Land use codes were digitized in the field using dropdown selections from defined domains. Agricultural fields the staff were unable to access were designated 'E' in the Class field for Entry Denied in accordance with the 2016 Land Use Legend. The areas designated with 'E' were also interpreted using a combination of Google Earth, Sentinel-2 Imagery website, Land IQ (LIQ) 2017 Delta Survey, and the county of San Joaquin 2017 Agriculture GIS feature class. Upon completion of the survey, a Python script was used to convert the data table into the standard land use format. ArcGIS geoprocessing tools and topology rules were used to locate errors for quality control. The primary focus of this land use survey is mapping agricultural fields. Urban residences and other urban areas were delineated using aerial photo interpretation. Some urban areas may have been missed. Rural residential land use was delineated by drawing polygons to surround houses and other buildings along with some of the surrounding land. These footprint areas do not represent the entire footprint of urban land. Water source information was not collected for this land use survey. Therefore, the water source has been designated as Unknown. Before final processing, standard quality control procedures were performed jointly by staff at DWR’s North Central Region, and at DRA's headquarters office under the leadership of Muffet Wilkerson, Senior Land and Water Use Supervisor. After quality control procedures were completed, the data was finalized. The positional accuracy of the digital line work, which is based upon the orthorectified NAIP imagery, is approximately 6 meters. The land use attribute accuracy for agricultural fields is high, because almost every delineated field was visited by a surveyor. The accuracy is 95 percent because some errors may have occurred. Possible sources of attribute errors are: a) Human error in the identification of crop types, b) Data entry errors. The 2017 San Joaquin County land use survey data was developed by the State of California, Department of Water Resources (DWR) through its Division of Regional Assistance (DRA). Land use boundaries were digitized, and land use was mapped by staff of DWR’s North Central Region using 2016 United States Department of Agriculture (USDA) National Agriculture Imagery Program (NAIP) one-meter resolution digital imagery, Sentinel-2 satellite imagery, and the Google Earth website. Land use polygons in agricultural areas were mapped in greater detail than areas of urban or native vegetation. Quality control procedures were performed jointly by staff at DWR’s DRA headquarters, and North Central Region. This data was developed to aid DWR’s ongoing efforts to monitor land use for the main purpose of determining current and projected water uses.</SPAN></P></DIV></DIV> Vineyard Imagery Analysis Survey Native vegetation Crop Global Positioning System (GPS) NDVI Raster Image classification San Joaquin County Boundaries Vector Land use Urban Satellite imagery Ground truth San Joaquin County California biota Agriculture Orthoimagery Digital imagery Cadastral Multispectral Landsat Orthorectification Irrigation Residential 2017 California Survey year Land use survey of San Joaquin County conducted by the California Department of Water Resources, North Central Region Office staff. California Department of Water Resources, Division of Regional Assistance (DRA), Northern Region Office, Land and Water Use and Conservation Section, and Water Use Efficiency Branch (Sacramento Headquarters). Contact: gis@water.ca.gov <DIV STYLE="text-align:Left;"><DIV><P><SPAN>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.</SPAN></P></DIV></DIV> /9j/4AAQSkZJRgABAQEAAAAAAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy MjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCADIASwDAREA AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWm p6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEA AwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSEx BhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElK U1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3 uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD3+gAo AKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgA oAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACg AoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKAM2zsbSeKSSa1gkkM8uWeMEnEjAcmg Cx/Zmn/8+Nt/36X/AAoAP7M0/wD58bb/AL9L/hQAf2Zp/wDz423/AH6X/CgA/szT/wDnxtv+/S/4 UAH9maf/AM+Nt/36X/CgA/szT/8Anxtv+/S/4UAH9maf/wA+Nt/36X/CgA/szT/+fG2/79L/AIUA H9maf/z423/fpf8ACgA/szT/APnxtv8Av0v+FAB/Zmn/APPjbf8Afpf8KAD+zNP/AOfG2/79L/hQ Af2Zp/8Az423/fpf8KAD+zNP/wCfG2/79L/hQAywijhlvY4o1jQTjCqMAfu07UAXaACgAoAKACgA oAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKAKmnf8ez/9d5v/AEY1AFugAoAKACgAoAKACgAo AKACgAoAKACgAoAq2n/Hzf8A/Xcf+i0oAtUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQA UAFABQAUAVNO/wCPZ/8ArvN/6MagC3QAUAFABQAUAFABQAUAFABQAUAFABQAUAVbT/j5v/8AruP/ AEWlAFqgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgCpp3/Hs/wD13m/9GNQB boAKACgAoAKACgAoAKACgAoAKACgAoAKAKtp/wAfN/8A9dx/6LSgC1QAUAFABQAUAFABQAUAFABQ AUAFABQAUAFABQAUAFABQAUAFABQBU07/j2f/rvN/wCjGoAt0AFABQAUAFABQAUAFABQAUAFABQA UAFAFW0/4+b/AP67j/0WlAFqgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgCp p3/Hs/8A13m/9GNQBboAKACgAoAKACgAoAKACgAoAKACgAoAKAKtp/x83/8A13H/AKLSgC1QAUAF ABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQBU07/j2f/rvN/6MagC3QAUAFABQAEgD J6UAQ2t3bXsXm2s8c0ecFo2DAH047+1JNPYCQuiuELqGbOATyaHJLdgZOoeJtMsBt803M3P7m2xI /GM98DGR1PeplUjHdjSLOm6idQgSUwtCJEDqj/eH1HY1y0MYqtWVK2xPUv12jCgAoAKACgCraf8A Hzf/APXcf+i0oAtUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAVNO/49n/67 zf8AoxqALdABQAUAFAGXr05i051yNrK3mL3K45AOcD8e2a48ZV5YqC3kVDSSbdkeNX9/qWjRJJZS S2schA3RzMhbk8MAQTwScnjnjpXThoxk3rr/AFb+vvLa50k9LDY9V1lhFdzvcXERcSrOZGbaM4ZQ TkjoR/kU6tCnN2b1tbbf9C4ySRYt9Wku0NyluQr/ACSTFVZm78HHHA69hjpmvPlTlGXLe/4Jf527 feXJRkrvT8z0Xw8LqO0sZLh1dtm4SIDjYegyTnpj+tcEMVGhWk4LTRO/4tWOSaTl6HXV9CAUAFAB QAUAVbT/AI+b/wD67j/0WlAFqgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgC pp3/AB7P/wBd5v8A0Y1AFugAoAKACgDk9Wura+lvrRLiJnjbZPE53EKR0x2z2rwsU3SrupZy7W76 /wDB/wCGKUuaLhezOU1ewuLuyuEezeRCxkgJkXv1GOPU9upPet8HVi5RstdNf136benSxve2unb+ uhjSw6knhl9LFsI1EuGfcSyDfljweAOxHqOnWuutXjGTUtv+Av69TSME5b6le0gbTrCZYbqY3HmF jswFMZG3aD1HU/iTx6eZ/aFCrVvUWn9f1qazw1ZRVjrNB8QNbWs2nz5eaEiO3ZVJDLj5cjPYDkj0 9eTx4lQm/aQe+/fffp/n+S56mHtJPZHodhcG5s0kMckZ5GHGCccZr38DV9rQjL5fcc8o8rtcs11k hQAUAFAFW0/4+b//AK7j/wBFpQBaoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACg AoAqad/x7P8A9d5v/RjUAW6ACgAoAKAOD122hh1m7vY3dbklVeNWU7sDgDODkgjjPbgcknyMQr1m 5dLW37bv5fn9w9klre/9feVr++YXEK3EIheN8l5M4Cg8ncDjp2Pp70YSmlre+q279rW2v+BdRxhL v59P+HHajbfa4d8BRtu4PjGWGORn8AO36c9eMoupTdnb/gm2GrKm+9zkJbWeNiFDOoXdhVJIA6n3 H+fSvlnTcppLf7z2vaxUb30NLQJYlvGa4kAWSNlxgKDg9CepP+zyDxxXXKk40UnHtfVf1Y8/FNt3 WvyPV7Hb9lUqQQSTkd69vLf93XzPM06Fmu8AoAKACgCraf8AHzf/APXcf+i0oAtUAFABQAUAFABQ AUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAVNO/49n/67zf8AoxqALdABQAUAFAHJ65O8V+3m xsQ33EwPmUYBOcjjJBx16V5mKg5zu7pL+v69SXUlDY5Zrya4mkmgiy8bqodssHYHDZO7pwf++fXG IklSSd9H+Hbp59hQbnPk20/S5Zlvbe2ttsuI4mkxLsjGGDc5IOeDz25watYmSVpJ6JL/AC2+6x1R o2+HXQpy3rS2801nG8hRip2Ll1UjlkHQdAMAj69AfOdKjKpyQdttem21+33/AIHTeaS5156+X3f8 MZc+mG4gENo626v87Mck5C8YJ5PPb0I61WGUYz5qivps/XW/frr3+RvO9rX+f9fI9P8ACU8lxoKP JIztvYZZ9xAHqe/r+Nepl3+7o87EQUKjSN2u4xCgAoAKAKtp/wAfN/8A9dx/6LSgC1QAUAFABQAU AFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQBU07/j2f/rvN/wCjGoAt0AFABQAUAcb4quJo 9TQNE3lbAqvnIbJ5UDPXOOx9+K8rGSXtPee3mddKlzQvB69fTQ5y6neFYoprfyW2HDK7AsobIHyj HccY4z+NVLDcnNOX9fM54xafKl/Xp+BNPeB7SylkBQMxkeAhWyCM7OnY9zg8etS6kaOjV11/H89f wOiEeaXLt/n/AF+RkXrR7rqW0j/cHazEuAQenQjIGTj34rzaqjJydFe71t/wTvp3VvafF0Cyk1K5 gKrDLcxwr0jQnaMHB6cjj/OKdGdXlcUm9NGvw/pBV5OZXdtTv/AU7T+HCzbsrcOuGGPT2HFe3gpc 1PU8uurSOnrrMQoAKACgCraf8fN//wBdx/6LSgC1QAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQ AUAFABQAUAFABQBU07/j2f8A67zf+jGoAt0AFABQAUAYmtWCXs6lpJI2QfKyH/P+TXg5hXlTrtLq kXCq4O6ON1ueS0gS21AYMg+aVY22dRnAznp2znt7nCriVXiqVr+f9f19524ZN3qQdvIo2Fs13eq1 ql1cXjJ8u1xjaO5zgcducZ9OtbYWpKq+SOv9ei/ruTXgoSjJ6M7/AEbwzbaU0kjubiZ2DbmXAXHo Pxr0sNgoULvdsxrYidXfZG4AAOBiu05wxQAUAFABQAUAVbT/AI+b/wD67j/0WlAFqgAoAKACgAoA KACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgCpp3/AB7P/wBd5v8A0Y1AFugAoAKACgDPvAPP 6dhXzea/7x8hMqTWi3sZhIYbgQGU4ZfcHsfeuPDRqSqpU1d/h8/IXkXdO0q201ZPJUl5Dl3Y5J9B 9K+ow+HjRj5s2nUlNJS6F6ugzCgAoAKACgAoAKAKtp/x83//AF3H/otKALVABQAUAFABQAUAFABQ AUAFABQAUAFABQAUAFABQAUAFABQAUAFAFTTv+PZ/wDrvN/6MagC3QAUAFABQAySNZFww/HuKxr4 enWjyzX+YCQwrCuBye5rPC4WGHjZb9WBJXUAUAFABQAUAFABQAUAVbT/AI+b/wD67j/0WlAFqgAo AKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgCpp3/AB7P/wBd5v8A0Y1AFugAoAKA CgAoAKACgAoAKACgAoAKACgAoAq2n/Hzf/8AXcf+i0oAtUAFABQAUAFABQAUAFABQAUAFABQAUAF ABQAUAFABQAUAFABQAUAVNO/49n/AOu83/oxqALdABQAUAFABQAUAFABQAUAFABQAUAFABQBVtP+ Pm//AOu4/wDRaUAWqACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKAKmnf8ez/9 d5v/AEY1AFugAoAKACgAoAKACgAoAKACgAoAKACgAoAq2n/Hzf8A/Xcf+i0oAtUAFABQAUAFABQA UAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAVNO/wCPZ/8ArvN/6MagC3QAUAFABQAUAFABQAUA FABQAUAFABQAUAVbT/j5v/8AruP/AEWlAFqgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKA CgAoAKACgCpp3/Hs/wD13m/9GNQBboAKACgAoAKACgAoAKACgAoAKACgAoAKAKtp/wAfN/8A9dx/ 6LSgC1QAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQBmWd/ZwxSRy3cEbiebKt IAR+8btQBY/tTT/+f62/7/L/AI0AH9qaf/z/AFt/3+X/ABoAP7U0/wD5/rb/AL/L/jQAf2pp/wDz /W3/AH+X/GgA/tTT/wDn+tv+/wAv+NAB/amn/wDP9bf9/l/xoAP7U0//AJ/rb/v8v+NAB/amn/8A P9bf9/l/xoAP7U0//n+tv+/y/wCNAB/amn/8/wBbf9/l/wAaAD+1NP8A+f62/wC/y/40AH9qaf8A 8/1t/wB/l/xoAP7U0/8A5/rb/v8AL/jQAf2pp/8Az/W3/f5f8aAGafNFPNfSQyJIhnHzIwI/1ael AF6gAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAo AKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgA oAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKACgAoAKAP/Z