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5TFlVggGdpXnCg9CaALdABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAF ABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFABQAUAFAH//2Q== dataset Carlos Lewis California Department of Water Resources Research Data Analyst 916-902-9856 1516 9th Street Sacramento CA 95814 US carlos.lewis@water.ca.gov 20221202 ArcGIS Metadata 1.0 Carlos Lewis California Department of Water Resources Research Data Analyst 916-902-9856 1516 9th Street Sacramento CA 95814 US carlos.lewis@water.ca.gov Digital Data data.cnra.ca.gov SDE Feature Class i10_APIS_FlightCoverage 2022-12-01 20221201 State of California Department of Water Resources vector digital data <DIV STYLE="text-align:Left;"><DIV><P><SPAN>This is a polygon feature class that models the flight coverage of available DWR historic aerial photography. The coordinate system utilized for this feature class is NAD1983_CaTM. The purpose of this dataset is to provide a spatial index of aerial photography acquisitions according to each acquisition's Project ID.</SPAN></P></DIV></DIV> This is a polygon feature class that models the flight coverage of available DWR historic aerial photography. The coordinate system utilized for this feature class is NAD1983_CaTM. The purpose of this dataset is to provide a spatial index of aerial photography acquisitions according to each acquisition's Project ID. California Department of Water Resources. Carlos Lewis California Department of Water Resources Research Data Analyst 916-902-9856 1516 9th Street Sacramento CA 95814 US carlos.lewis@water.ca.gov none none digital vector data i10_APIS_FlightCoverage Apis flight coverage i10_APIS_FlightCoverage flight coverage Apis i10_APIS_FlightCoverage APIS Flight Coverage APIS flight coverage aerial photography <DIV STYLE="text-align:Left;"><DIV><P><SPAN>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 Standards 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. The official DWR GIS Steward for this data set is Carlos Lewis, who may be contacted at 916-902-9856, or at carlos.lewis@water.ca.gov. Comments, problems, improvements, updates, or suggestions should be forwarded to the official GIS Steward as available and appropriate.</SPAN></P></DIV></DIV> 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 Standards 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. The official DWR GIS Steward for this data set is Carlos Lewis, who may be contacted at 916-902-9856, or at carlos.lewis@water.ca.gov. Comments, problems, improvements, updates, or suggestions should be forwarded to the official GIS Steward as available and appropriate. none Determined by the primary data steward. true -124.4985 -114.1834 42.1462 33.2916 ground condition 1951-01-01 2015-01-01 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 Standards 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. The official DWR GIS Steward for this data set is Carlos Lewis, who may be contacted at 916-902-9856, or at carlos.lewis@water.ca.gov. Comments, problems, improvements, updates, or suggestions should be forwarded to the official GIS Steward as available and appropriate. Version 6.2 (Build 9200) ; Esri ArcGIS 10.9.1.28388 1 -124.498480 -114.183370 42.146198 33.291583 Attribute values are considered 100% accurate. Data has been thoroughly reviewed and is considered to have 100% logical consistency. As of 12/01/2022 dataset is approximately 12% complete (roughly 200 of 1600 film cans have been indexed). Locational quality determined to be 24.2 meters horizontal accuracy at a 95% confidence level. This report is not being made by a licensed land surveyor, and is not analogous to a positional accuracy statement as stipulated in the California Public Resources Code.14.2. n/a i10_APIS_FlightCoverage i10_APIS_FlightCoverage 2017-06-19 2017069 State of California Department of Water Resources Vector digital data ground condition 1952-10-02 2014-11-25 Process steps were performed on different dates, and dataset is being continually updated. Thus, there is no single process date and all dates will have a default of 20221201. Aerial photography was first scanned and georeferenced. 2022-12-01 Flight lines for each acquisition were digitized by drawing a line between the start and end images' centroids. Photo center points were then digitized by taking an equal interval and dropping points along the flight line. Attributes were assigned to the lines and points during this step. Attributes were taken from DWR's legacy aerial photography tracking database. 2022-12-01 For each series of flight lines of the same acquisition project, date, scale, and can number, flight coverage polygons were digitized by creating a flat buffer around the lines. The buffer distance value was determined by applying the following formula: distance = scale/12*(9*(1-manualDistance)) where manualDistance was almost given a value of 0.6. Attributes for the polygon were then filled out. Attributes were taken from DWR's legacy aerial photography tracking database. 2022-12-01 443 atlas_dev.SDE.i10_APIS_FlightCoverage Feature Class 443 OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. OBJECTID OID 4 10 0 SHAPE Feature geometry. ESRI Coordinates defining the features. SHAPE Geometry 4 0 0 Polygon_ID Unique polygon identifier. Each polygon is assigned a unique ID beginning at 1. This field is used as a relate key to relate the flight coverage dataset with the flight lines and photo centers datasets. Thus, each polygon ID has a corresponding set of flight lines and photo centers. Each polygon is assigned a unique ID beginning at 1. This field is used as a relate key to relate the flight coverage dataset with the flight lines and photo centers datasets. Thus, each polygon ID has a corresponding set of flight lines and photo centers. Polygon_ID Integer 4 10 0 Project_ID Project identifier. Identifies corresponding acquisition. Project_ID String 24 0 0 Scale Image scale. 500 99000 Scale Integer 4 10 0 Date Image date. 1/1/1951 1/1/2015 Date Date 8 0 0 Camera Camera model used to take image. Code format: BRAND-MODEL-MODEL NUMBER If camera model is unknown, then value is UNKNOWN. List of camera models currently in dataset: WILD-RC-5A, WILD-RC-8, WILD-RC-10, WILD-RC-30, ZEISS-RMKA-15/23, ZEISS-RMKA-21/23, ZEISS-TOP-15, ZEISS-FK-24, FAIRCHILD-K-17, FAIRCHILD-XF-290, FAIRCHILD-T-11, FAIRCHILD-K-38, FAIRCHILD-T-12, FAIRCHILD-CHS, FAIRCHILD-K-3B, FAIRCHILD-K-3B-MODIFIED, FAIRCHILD-KA-2, JENA-LMK-15/2323, PARK-PRECISION, KARGL-K-16, 54-015 Camera String 24 0 0 Can_Number Internal can number of the roll that corresponds to the image. 1 1600 Can_Number String 24 0 0 Record_Last_Edited_By Person who last edited the data. Record_Last_Edited_By String 255 0 0 Date_Record_Last_Edited Date record was last edited. 1/1/2022 Date_Record_Last_Edited Date 8 0 0 Comments Comments made by data steward. Comments String 255 0 0 Shape.STArea() Shape.STArea() Double 0 0 0 Shape.STLength() Shape.STLength() Double 0 0 0 n/a n/a