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Description: Parcels represent taxable pieces of property. A parcel is created by the San Diego County Assessor/Recorder/County Clerk (ARCC) to identify a specific portion of real property that is taxed at a certain rate for a certain owner. Tax parcels are typically the same as a legally subdivided lot but are not necessessarily so. For example, a single owner may own a legally subdivided piece of property but there may be two or more tax parcels covering that property. Legal subdivisions are shown in the LOTS layer.Parcels are keyed to the Assessor Parcel Number (APN) and the parcel polygon identifier (PARCELID).The SanGIS parcel layers are “stacked” parcels. That means that for any piece of ground there may be multiple parcels. For example, a condominium building in downtown San Diego may have 200 individual condos. Each condo is a separate taxable parcel. All 200 parcels will be associated with the same physical lot on the ground. When the SanGIS parcel layer is created each individual condo has a polygon representing the physical location of the parent parcel. In this example there will be 200 polygons all stacked on top of each other that represent the taxable parcels and each polygon will have the same physical characteristics (shape, size, area, location) – they are, essentially, copies of each other. However, other associated information (owner, document numbers, etc) will be different for each. In this case, each condo unit will have its own parcel number and there will be no single parcel representing the lot on the ground. Besides condominiums there are two other cases where you will see stacked parcels – possessory interest and mobile homes. Possessory interests have Assessor Parcel Numbers (APNs) that start with 76x. A possessory interest (or PI) parcel represents a taxable interest in the underlying, or parent, parcel but not necessarily ownership. For instance, a private company may have an arrangement with a University to operate a business on campus – a coffee shop or gift shop for example. The private business is taxable and is assigned a 76x APN and that APN is associated with the parent parcel which is owned by the University. Possessory interests do not represent ownership on the parcel, only a taxable interest in the underlying parent parcel.Mobile home parcel APNs start with 77x. In a manner similar to the possessory interests, mobile home owners own their home (coach) but not the underlying property on which the house sits. The actual mobile home is a separate taxable parcel associated with the mobile home park parent parcel. These taxable parcels all have the same polygon as the underlying parent parcel and will show as stacked parcels as well.This dataset contains parcels as shown on the Assessor Parcel Maps (APM). However, parcels shown in this layer may lag that of the official APM by a number of weeks due to how SanGIS is notified of the newly created parcel and the timing of publication of the parcel layer.This dataset contains the parcel polygon and associated parcel information provided by the County ARCC in thier Master Property Record (MPR file) and Parcel Assessment Record (PAR file). In addition to the MPR and PAR data assigned by ARCC, SanGIS may add situs address information if it has been provided by the addressing authority in which the parcel is situated. The situs address information provided by SanGIS may not be the same as the SITUS address data in the MPR.This dataset contains site address information along with owner names and addresses, and other property information. Key fields in this dataset include:Land use information provided in the NUCLEUS_USE_CD field (225 types with a 3-digit domain). The ASR_LANDUSE field is an older version of this field but comprises more generalized land uses (91 types). Generalized land use zoning information is provided in the NUCLEUS_ZONE_CD field. The ASR_ZONE field is an older version of this field. Land use zoning is generalized comprising 9 zone types. This can provide a useful approximation for parcels that are outside of the San Diego City and County zoning jurisdictions.Please note that land use and zoning fields are not regularly maintained by the Assessor's Office and should only be used as an approximate guide. Updates are only made when there is new construction, or a change in ownership. They are not updated when the County and Local Cities update their zoning data or when permit changes to properties are completed. Please refer to city and County official zoning datasets for official zoning information, and to SANDAG for more current land use data. NOTE: If the name of this layer includes "_NORTH", "_SOUTH", or "_EAST" it represents a subset of the entire San Diego County Parcel Base. That is, the "_NORTH" layer includes only parcels generally in the Northwestern portion of the County. The "_SOUTH" layer includes parcels in the Southwestern portion. And the "_EAST" layer includes parcels in the approximate Eastern half of the County.
Copyright Text: SanGIS using legal recorded data provided by the County Recorders and Assessor's Office. See the County ARCC website at https://arcc.sdcounty.ca.gov/Pages/default.aspx for more information about tax parcels
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Schools. Public and private school site polygons.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Sewer system for the City of La Mesa.This feature class contains data pertaining to manholes within the City of La Mesa. Manholes are generally openings in the sewer collection system that allow human access for construction, inspection, or maintenance. In this case, it is a generalized class that includes manholes as one of five types (subtypes): standard manhole, end of line, drop, manhole with infiltration dish, or high point.Based on the Esri Simplified Sewer file geodatabase model; added La Mesa content.Feature-linked annotation allows for a relationship between the feature and the annotation. If the feature is moved the annotation will also be moved. When an attribute is updated the annotation text updates if it is linked. Placement properties are also stored in the feature class so that individual text can be moved as needed.</SPAN></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Sewer system for the City of La Mesa.This feature class contains data pertaining to manholes within the City of La Mesa. Manholes are generally openings in the sewer collection system that allow human access for construction, inspection, or maintenance. In this case, it is a generalized class that includes manholes as one of five types (subtypes): standard manhole, end of line, drop, manhole with infiltration dish, or high point.Based on the Esri Simplified Sewer file geodatabase model; added La Mesa content.Feature-linked annotation allows for a relationship between the feature and the annotation. If the feature is moved the annotation will also be moved. When an attribute is updated the annotation text updates if it is linked. Placement properties are also stored in the feature class so that individual text can be moved as needed.</SPAN></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Sewer system for the City of La Mesa.</SPAN></SPAN></P><P><SPAN><SPAN>This feature class contains data pertaining to gravity mains within the City of La Mesa. Gravity mains are pipes that channel sewer flow (wastewater) from one point to another via gravity.</SPAN></SPAN></P><P><SPAN><SPAN>Based on the Esri Simplified Sewer file geodatabase model; added La Mesa content.</SPAN></SPAN></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The sewer basin collects and contains wastewater before it is removed from a building's system by way of a submersible sewage pump.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Stormwater system for the City of La Mesa.</SPAN></P><P><SPAN>This feature class contains data pertaining to cleanouts within the City of La Mesa. Cleanouts are features that provide access to the stormwater collection system for cleaning purposes, and may be one of four types (subtypes): cleanout, cyclone, manhole, or treatment.</SPAN></P><P><SPAN>Based on the Esri Simplified Stormwater file geodatabase model; added La Mesa content.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Stormwater system for the City of La Mesa.</SPAN></P><P><SPAN>This feature class contains data pertaining to outlets within the City of La Mesa. Outlets are points at which water exits the stormwater collection system, and may be one of four types (subtypes): headwall, outlet, wall, or unknown.</SPAN></P><P><SPAN>Based on the Esri Simplified Stormwater file geodatabase model; added La Mesa content.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Stormwater system for the City of La Mesa.</SPAN></P><P><SPAN>This feature class contains data pertaining to inlets within the City of La Mesa. Inlets are points at which water enters the stormwater collection system, and may be one of six types (subtypes): catch basin, headwall, inlet, sump, wall, or unknown.</SPAN></P><P><SPAN>Based on the Esri Simplified Stormwater file geodatabase model; added La Mesa content.</SPAN></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>A gravity main is a type of main line that is</SPAN></P><P><SPAN>unpressurized and relies on gravity to move the</SPAN></P><P><SPAN>water through the main.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>A gravity main is a type of main line that is</SPAN></P><P><SPAN>unpressurized and relies on gravity to move the</SPAN></P><P><SPAN>water through the main.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>A gravity main is a type of main line that is</SPAN></P><P><SPAN>unpressurized and relies on gravity to move the</SPAN></P><P><SPAN>water through the main.</SPAN></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Stormwater system for the City of La Mesa.</SPAN></P><P><SPAN>This feature class contains data pertaining to cross gutters within the City of La Mesa. Cross gutters are strips of concrete that run across the asphalt surface of a road and are placed to channel water flow into storm drains. These features may be one of two types (subtypes): midblock, or standard.</SPAN></P><P><SPAN>Based on the Esri Simplified Stormwater file geodatabase model; added La Mesa content.</SPAN></P><P><SPAN>Feature-linked annotation allows for a relationship between the feature and the annotation. If the feature is moved the annotation will also be moved. When an attribute is updated the annotation text updates if it is linked. Placement properties are also stored in the feature class so that individual text can be moved as needed.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Stormwater system for the City of La Mesa.</SPAN></P><P><SPAN>This feature class contains annotation for topographic contours within the City of La Mesa. The contours were derived from LIDAR data. This annotation is at 10 ft intervals, and has been placed for the stormwater mapbook.</SPAN></P><P><SPAN>Based on the Esri Simplified Stormwater file geodatabase model; added La Mesa content.</SPAN></P></DIV></DIV></DIV>
Copyright Text: City of La Mesa, Department of Public Works
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This feature class is a subset of a larger 2014 2ft topographical dataset that was created at SanGIS. This feature class covers the Poway and La Mesa area approximately. The dataset was created by clipping the larger topographical dataset to the Poway La Mesa Grid cell of the SanGIS Topographical Index (GRID_2014_2Ft_Topo_Index layer).</SPAN></P><P><SPAN>The larger topographical dataset was created by merging all of the raw, individual two foot contour tiles provided by Photo Science. The Z and M data provided in the raw, individual tiles was removed to allow the Dissolve tool to be run. The feature class was then Dissolved by Elevation and LType (no multipart features, and "Unsplit lines" selected). The XY Tolerance was set at the default (0.00328083 ft), so some of the line segments that were closer than this tolerance snapped together and created an overhanging line segment. In order to get rid of these very small lines, any remaining individual lines less than 1" (0.08333 ft) were removed from the data.</SPAN></P><P><SPAN>Dataset Description: San Diego, California 2014 LiDAR project called for the Planning, Acquisition, processing and derivative products of LIDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meter. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1. The data was developed based on a horizontal projection/datum of NAD83, State Plane California VI, Survey Feet and vertical datum of NAVD1988 (GEOID12A), Survey Feet. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.2 Files formatted to 1565 individual 5000 ft x 5000 ft tiles, and corresponding Intensity Images and Bare Earth DEMs tiled to the same 5000 ft x 5000 ft schema, and Breaklines in Esri geodatabase format. </SPAN></P><P><SPAN>Ground Conditions: LiDAR was collected in late 2014 and early 2015, while no snow was on the ground and rivers were at or below normal levels. In order to post process the LiDAR data to meet task order specifications, Photo Science established a total of 88 QA calibration control points and 80 Land Cover control points that were used to calibrate the LIDAR to known ground locations established throughout the San Diego, California project area.</SPAN></P><P><SPAN>Photo Science used classified LAS files to show the manually reviewed bare earth surface. This allowed the user to create Intensity Images, Breaklines and Raster DEM. The purpose of these lidar data was to produce high accuracy 3D hydro-flattened Digital Elevation Model (DEM) with a 2.5 foot cell size. These raw lidar point cloud data were used to create classified lidar LAS files, intensity images, 3D breaklines, hydro-flattened DEMs as necessary. This resulting data was used to create the raw, individual two foot contour tiles.</SPAN></P></DIV></DIV></DIV>
Copyright Text: SanGIS, Photo Science, A Quantum Spatial Company flew the LiDAR and processed the data.