HORIZONTAL AND VERTICAL GEODETIC CONTROL DATA FOR FLORIDA - MAY 2014
Metadata also available as
Metadata:
- Identification_Information:
-
- Citation:
-
- Citation_Information:
-
- Originator:
-
National Oceanic and Atmospheric Administration, National Geodetic Survey
- Publication_Date: 2004
- Title:
-
HORIZONTAL AND VERTICAL GEODETIC CONTROL DATA FOR FLORIDA - MAY 2014
- Edition: latest available
- Geospatial_Data_Presentation_Form: Diagram
- Series_Information:
-
- Series_Name: N/A
- Issue_Identification: N/A
- Publication_Information:
-
- Publication_Place: NOAA Campus, Silver Spring, MD
- Publisher:
-
National Oceanic and Atmospheric Administration, National Geodetic Survey
- Other_Citation_Details: State of Florida
- Online_Linkage: <http://www.ngs.noaa.gov/cgi-bin/datasheet.prl>
- Description:
-
- Abstract:
-
This data contains a set of geodetic control stations maintained by the National Geodetic Survey. Each geodetic control station in this dataset has either a precise Latitude/Longitude used for horizontal control or a precise Orthometric Height used for vertical control, or both. The National Geodetic Survey (NGS) serves as the Nation's depository for geodetic data. The NGS distributes geodetic data worldwide to a variety of users. These geodetic data include the final results of geodetic surveys, software programs to format, compute, verify, and adjust original survey observations or to convert values from one geodetic datum to another, and publications that describe how to obtain and use Geodetic Data products and services.
- Purpose:
-
Provide a base of reference for latitude, longitude and height
throughout the United States.
- Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: 20140519
- Currentness_Reference: publication date
- Status:
-
- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
-
- Bounding_Coordinates:
-
- West_Bounding_Coordinate: -87.429040
- East_Bounding_Coordinate: -79.872251
- North_Bounding_Coordinate: 30.983191
- South_Bounding_Coordinate: 24.492815
- Keywords:
-
- Theme:
-
- Theme_Keyword_Thesaurus: NONE
- Theme_Keyword:
-
NSRS, geodetic, horizontal control,
vertical control, ellipsoid height, benchmark,
orthometric height, latitude, longitude
- Theme:
-
- Theme_Keyword_Thesaurus: NONE
- Theme_Keyword: imageryBaseMapsLandCover
- Theme_Keyword: elevation
- Theme_Keyword: planningCadastre
- Place:
-
- Place_Keyword_Thesaurus: None
- Place_Keyword: The geographic limits of USA including trust Territories
- Stratum:
-
- Stratum_Keyword_Thesaurus: N/A
- Stratum_Keyword: N/A
- Temporal:
-
- Temporal_Keyword_Thesaurus: N/A
- Temporal_Keyword: N/A
- Access_Constraints:
-
Geodetic Data are in the public
domain, not restricted from access or distribution.
- Use_Constraints:
-
Not restricted; Geodetic Data,
including software were developed and compiled with
U.S. Government funding; no proprietary rights may be
attached to them nor may they be sold to the U.S.
Government as part of any procurement of ADP products
or services.
- Point_of_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: NOAA, National Geodetic Survey
- Contact_Person: NGS Information Services Branch
- Contact_Position: IT Specialist
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address:
-
SSMC2/9152
1315 East-west Highway
- City: Silver Spring
- State_or_Province: MD
- Postal_Code: 20910
- Country: USA
- Contact_Voice_Telephone: 301-713-3242
- Contact_Facsimile_Telephone: 301-713-4172
- Contact_Electronic_Mail_Address: ngs.software@noaa.gov
- Hours_of_Service: 8:30am to 5:00pm EST
- Contact_Instructions: Prefer EMail
- Data_Set_Credit:
-
NOAA, National Geodetic Survey and
cooperating organizations
- Security_Information:
-
- Security_Classification_System: DOD
- Security_Classification: Unclassified
- Security_Handling_Description: none
- Native_Data_Set_Environment:
-
The data was extracted from NGS datasheets which
are available at <http://www.ngs.noaa.gov/cgi-bin/datasheet.prl>
The NGS datasheet is a text document which summarizes
key geodetic information stored in the NGS database.
- Cross_Reference:
-
- Citation_Information:
-
- Other_Citation_Details:
-
National Geodetic Survey:
<http://www.ngs.noaa.gov/>
- Data_Quality_Information:
-
- Attribute_Accuracy:
-
- Attribute_Accuracy_Report:
-
GeoPlan relied on the integrity of the attribute information within
the original data.
- Quantitative_Attribute_Accuracy_Assessment:
-
- Attribute_Accuracy_Value: 95 percent confidence level for geodetic quality data.
- Attribute_Accuracy_Explanation:
-
Geodetic Data are continuously being processed;
their standards and specifications are being reviewed for next
publication release. "Standards and Specifications for Geodetic Control Networks",
1984 and "Geometric Geodetic Accuracy Standards
and Specifications for Using GPS Relative
Positioning Techniques," FGCS (formally FGCC)
publication version 5.0 1989, are most current
published documents.
- Logical_Consistency_Report:
-
FGCS sponsored testing in cooperation with equipment
manufacturers and National Institutes of Standards
and Technology, Gaithersburg, MD 20850
- Completeness_Report:
-
This dataset DOES NOT include destroyed marks.
All other non-publishable marks are NOT included.
Non-publishable criteria is available at
<http://www.ngs.noaa.gov/cgi-bin/craigs_lib.prl?HELP_NONPUB=1>
- Positional_Accuracy:
-
- Horizontal_Positional_Accuracy:
-
- Horizontal_Positional_Accuracy_Report:
-
The description of tests are explained in "Geometric
Geodetic Accuracy Standards and Specifications For
Using GPS Relative Positioning Techniques," FGCS
(formally FGCC) publication version 5.0, 1989.
- Quantitative_Horizontal_Positional_Accuracy_Assessment:
-
- Horizontal_Positional_Accuracy_Value: .05 meters for highest order of accuracy
- Horizontal_Positional_Accuracy_Explanation:
-
Horizontal positional accuracy statements pertain
to horizontal control stations only.
i.e. Those with geodetic quality Latitude, Longitudes.
Positional Accuracy explanation contained in
"Geometric Geodetic Accuracy Standards and
Specifications For Using GPS Relative Positioning
Techniques," FGCS (formally FGCC) publication
version 5.0, 1989, (See table 1, p6).
with the exception of Order A and Order B which
have an accuracy of as described at:
<http://www.ngs.noaa.gov/cgi-bin/ds_lookup.prl?Item=HORZ%20ORDER>
- Vertical_Positional_Accuracy:
-
- Vertical_Positional_Accuracy_Report:
-
The description of tests are explained in "Geometric Geodetic
Accuracy Standards and Specifications for Using
GPS Relative Positioning Techniques," FGCS
(formally FGCC) publication version 5.0, 1989,
(See table 1, p6).
- Quantitative_Vertical_Positional_Accuracy_Assessment:
-
- Vertical_Positional_Accuracy_Value: .05 meter for highest order of accuracy
- Vertical_Positional_Accuracy_Explanation:
-
Vertical positional accuracy statements pertain
to vertical control stations only.
i.e. Those with geodetic quality Orthometric Heights.
Orthometric Height accuracy explanation is contained in
FGDC publication "Standards and Specifications for Geodetic Control Networks"
with the exception of vertical control of class 0
POSTED and READJUSTED Heights which are described at:
<http://www.ngs.noaa.gov/cgi-bin/ds_lookup.prl?Item=VERT%20ORDER>
Ellipsoid height accuracy explanation contained in
"Geometric Geodetic Accuracy Standards and
Specifications for Using GPS Relative Positioning
Techniques," FGCS (formally FGCC) publication
version 5.0, 1989. (see table 1, p6).
The accuracies for ellipsoid heights are described at:
<http://www.ngs.noaa.gov/cgi-bin/ds_lookup.prl?Item=ELLP%20ORDER>
- Lineage:
-
- Source_Information:
-
- Source_Citation:
-
- Citation_Information:
-
- Originator:
-
National Oceanic & Atmospheric Administration, National Geodetic Survey
- Publication_Date: 20140519
- Title:
-
"Input Formats and Specifications of the
National Geodetic Survey Data Base" published by
FGCS (formally FGCC)
- Edition: latest available
- Geospatial_Data_Presentation_Form: diagram
- Series_Information:
-
- Series_Name: N/A
- Issue_Identification: N/A
- Publication_Information:
-
- Publication_Place: NOAA Campus, Silver Spring, MD
- Publisher: NOAA, National Geodetic Survey
- Other_Citation_Details: N/A
- Online_Linkage: <http://www.ngs.noaa.gov/FGCS/BlueBook/>
- Source_Scale_Denominator: Unknown
- Type_of_Source_Media:
- Source_Time_Period_of_Content:
-
- Time_Period_Information:
-
- Single_Date/Time:
-
- Calendar_Date: 1994
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: NOAA, NGS
- Source_Contribution: Spatial and Attribute Information
- Process_Step:
-
- Process_Description:
-
The National Geodetic Survey
produces geodetic data. Geodetic data comprise
the results of geodetic surveys to determine,
among other things, latitude, longitude, height,
scale, and orientation control. The National
Geodetic Survey original field survey project
observations and final reports are accessioned
into records system of the National Archives and
Records Administration of the U.S.A. These
surveys provide information valuable for a variety
of uses in the mapping, charting and surveying
community.
The NGS' final product is the geodetic data sheet.
Geodetic data sheets are comprehensive summaries
of all published information for a given
geodetic reference point, including:
the geographic position and/or height based on the
current reference datum, condition of the survey
mark when it was last visited, a description of
where the point is located and how to reach it,
and an explanation of the terms used in the data
sheet. In support of these geodetic data, the NGS
provides software, publications, and various user
services, including geodetic advisor program,
instrument calibration, surveying standards, and
technical workshops.
This dataset contains certain information extracted
from the above mentioned data sheet.
- Source_Used_Citation_Abbreviation: Geodetic Data
- Process_Date: Not complete
- Source_Produced_Citation_Abbreviation: NOAA, National Geodetic Survey and cooperating organizations.
- Process_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: NGS Information Services Branch
- Contact_Position: IT Specialist
- Contact_Address:
-
- Address_Type: Mailing and Physical Address
- Address:
-
SSMC2/9152
1315 East-west Highway
- City: Silver Spring
- State_or_Province: MD
- Postal_Code: 20910
- Country: USA
- Contact_Voice_Telephone: 301-713-3242
- Contact_Facsimile_Telephone: 301-713-4172
- Contact_Electronic_Mail_Address: ngs.software@noaa.gov
- Hours_of_Service: 8:30am to 5:00pm EST
- Contact_Instructions: Prefer EMail
- Process_Step:
-
- Process_Description:
-
GeoPlan downloaded this data in on May 22nd, 2014 from the following website:
<http://www.ngs.noaa.gov/cgi-bin/datasheet.prl>
When downloaded the data was in shapefile format. The data was projected
from GCS NAD83 HARN to the FGDL Albers NAD83 HARN projection.
- Changed name from fl.shp to ngs_points_may14.shp
- A DESCRIPT field was added based on QUAD.
- A FGDLAQDATE field was added based on date GeoPlan acquired the data from the source.
- Source_Used_Citation_Abbreviation: GeoPlan
- Process_Date: 20140522
- Spatial_Data_Organization_Information:
-
- Indirect_Spatial_Reference:
-
Geodetic Data- horizontal positional datum
conversion, use program NADCON (version 2.1)
Geodetic Data - vertical positional datum
conversion, use program VERTCON (version 2.0)
These programs provide indirect spatial reference
data and are available from NOAA, National
Geodetic Survey at
<http://www.ngs.noaa.gov/PC_PROD/pc_prod.shtml>
- Direct_Spatial_Reference_Method: point
- Point_and_Vector_Object_Information:
-
- SDTS_Terms_Description:
-
- SDTS_Point_and_Vector_Object_Type: Entity point
- Point_and_Vector_Object_Count: 50640
- Spatial_Reference_Information:
-
- Horizontal_Coordinate_System_Definition:
-
- Planar:
-
- Map_Projection:
-
- Map_Projection_Name: Albers Conical Equal Area
- Albers_Conical_Equal_Area:
-
- Standard_Parallel: 24.000000
- Standard_Parallel: 31.500000
- Longitude_of_Central_Meridian: -84.000000
- Latitude_of_Projection_Origin: 24.000000
- False_Easting: 400000.000000
- False_Northing: 0.000000
- Planar_Coordinate_Information:
-
- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
-
- Abscissa_Resolution: 0.002048
- Ordinate_Resolution: 0.002048
- Planar_Distance_Units: meters
- Geodetic_Model:
-
- Horizontal_Datum_Name: North American Datum of 1983 (NAD 83)
- Ellipsoid_Name: Geodetic Reference System 80 (GRS80)
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.26
- Vertical_Coordinate_System_Definition:
-
- Altitude_System_Definition:
-
- Altitude_Datum_Name:
-
North American Vertical Datum of 1988 (NAVD 88),
including Ellipsoidal and Orthometric
Heights.
- Altitude_Resolution: .01
- Altitude_Distance_Units: meters
- Altitude_Encoding_Method: implicit coordinate
- Depth_System_Definition:
-
- Depth_Datum_Name: the local surface
- Depth_Resolution: .01
- Depth_Distance_Units: meters
- Depth_Encoding_Method: implicit coordinate
- Entity_and_Attribute_Information:
-
- Detailed_Description:
-
- Entity_Type:
-
- Entity_Type_Label: NGS_POINTS_MAY14
- Entity_Type_Definition: NGS_POINTS_MAY14.DBF
- Entity_Type_Definition_Source:
-
National Oceanic & Atmospheric Administration, National Geodetic Survey
- Attribute:
-
- Attribute_Label: OBJECTID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
-
- Unrepresentable_Domain:
-
Sequential unique whole numbers that are automatically generated.
- Attribute:
-
- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
-
- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
-
- Attribute_Label: FeatureId
- Attribute_Definition: Temporary unique ID assigned to this station.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: DATA_DATE
- Attribute_Definition:
-
The date when this information was retrieved from the NGS database.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: DATA_SRCE
- Attribute_Definition:
-
Data Source where the information for the mark came from. You should use this link to obtain a full datasheet for the mark or obtain the datasheets from <http://www.ngs.noaa.gov/cgi-bin/datasheet.prl> if you intend to use the data for survey control.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: DEC_LONG
- Attribute_Definition:
-
Decimal equivalent of the LONGITUDE Always displayed to 10 decimal places, but you should see POS_SRCE and POS_ORDER to determine the true accuracy.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: DEC_LAT
- Attribute_Definition: Decimal equivalent of the LATITUDE
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: PID
- Attribute_Definition: Permanent Identifier assigned by NGS to each mark
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: NAME
- Attribute_Definition: Station Name (a.k.a. Designation)
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: STATE
- Attribute_Definition: State Code
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: COUNTY
- Attribute_Definition: County Name
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: QUAD
- Attribute_Definition: USGS Topographic Quad Map Name
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: LATITUDE
- Attribute_Definition: Latitude in Deg-Min-Sec format
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: LONGITUDE
- Attribute_Definition: Longitude in Deg-Min-Sec format
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: POS_DATUM
- Attribute_Definition: Datum of the LATITUDE,LONGITUDE Should always be NAD83
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: DATUM_TAG
- Attribute_Definition:
-
Datum Tag of the LATITUDE,LONGITUDE NAD83 (1986) indicates positions on the NAD83 datum for the North American Adjustment, completed in 1986. NAD83 (nnnn) indicates positions on the NAD83 datum for the North American Adjustment, but readjusted to a State High Accuracy Reference Network (HARN) on the date shown in (nnnn). NAD83 (CORS) indicates positions which are part of the CORS network.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: POS_SRCE
- Attribute_Definition: Position Source for the LATITUDE,LONGITUDE
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: ADJUSTED
- Enumerated_Domain_Value_Definition:
-
Least squares adjustment. (Lat,Lon Rounded to 5 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: HD_HELD1
- Enumerated_Domain_Value_Definition:
-
Differentially corrected hand held GPS observations. (Lat,Lon Rounded to 2 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: HD_HELD2
- Enumerated_Domain_Value_Definition:
-
Autonomous hand held GPS observations. (Lat,Lon Rounded to 1 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: SCALED
- Enumerated_Domain_Value_Definition:
-
Scaled from a topographic map. (Lat,Lon Rounded to 0 decimal places.)
- Attribute:
-
- Attribute_Label: ELEVATION
- Attribute_Definition:
-
Present if available. The Orthometric Height in METERS indicating the height above the Geoid.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: ELEV_DATUM
- Attribute_Definition: Datum of the ELEVATION
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: ELEV_SRCE
- Attribute_Definition: Elevation Source for the ELEVATION
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: ADJUSTED
- Enumerated_Domain_Value_Definition:
-
Direct Digital Output from Least Squares Adjustment of Precise Leveling. (Rounded to 3 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: ADJ UNCH
- Enumerated_Domain_Value_Definition:
-
Manually Entered (and NOT verified) Output of Least Squares Adjustment of Precise Leveling. (Rounded to 3 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: POSTED
- Enumerated_Domain_Value_Definition:
-
Pre-1991 Precise Leveling Adjusted to the NAVD 88 Network After Completion of the NAVD 88 General Adjustment of 1991. (Rounded to 3 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: READJUST
- Enumerated_Domain_Value_Definition:
-
Precise Leveling Readjusted as Required by Crustal Motion or Other Cause. (Rounded to 2 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: N HEIGHT
- Enumerated_Domain_Value_Definition:
-
Computed from Precise Leveling Connected at Only One Published Bench Mark. (Rounded to 2 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: RESET
- Enumerated_Domain_Value_Definition:
-
Reset Computation of Precise Leveling. (Rounded to 2 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: COMPUTED
- Enumerated_Domain_Value_Definition:
-
Computed from Precise Leveling Using Non-rigorous Adjustment Technique. (Rounded to 2 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: LEVELING
- Enumerated_Domain_Value_Definition:
-
Precise Leveling Performed by Horizontal Field Party. (Rounded to 2 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: H LEVEL
- Enumerated_Domain_Value_Definition:
-
Level between control points not connected to bench mark. (Rounded to 1 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: GPS OBS
- Enumerated_Domain_Value_Definition: Computed from GPS Observations. (Rounded to 1 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: VERT ANG
- Enumerated_Domain_Value_Definition:
-
Computed from Vertical Angle Observations. (Rounded to 1 decimal place; If No Check, to 0 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: SCALED
- Enumerated_Domain_Value_Definition: Scaled from a Topographic Map. (Rounded to 0 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: U HEIGHT
- Enumerated_Domain_Value_Definition:
-
Unvalidated height from precise leveling connected at only one NSRS point. (Rounded to 2 decimal places.)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: VERTCON
- Enumerated_Domain_Value_Definition:
-
The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height. (Rounded to 0 decimal places.)
- Attribute:
-
- Attribute_Label: ELLIP_HT
- Attribute_Definition:
-
Present if available. The ellipsoid height in METERS referenced to GRS80 ellipsoid.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: ELLIP_SRCE
- Attribute_Definition:
-
Ellipsoid Ht Source for the ELLIP_HT Should always be GPS_OBS when present.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: POS_ORDER
- Attribute_Definition:
-
Order of accuracy for the LATITUDE,LONGITUDE Should be one of the following- A,B,1,2,3 Order and class for Orders 1, 2, and 3 are defined in the Federal Geodetic Control Committee publication "Standards and Specifications for Geodetic Control Networks". In addition- Order A stations have a relative accuracy of 5 mm +/- 1-10,000,000 relative to other A-order stations. Order B stations have a relative accuracy of 8 mm +/- 1- 1,000,000 relative to other A- and B-order stations.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: POS_CHECK
- Attribute_Definition: Observational Check
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Y
- Enumerated_Domain_Value_Definition: Observational Check was made for the position
- Enumerated_Domain:
-
- Enumerated_Domain_Value: N
- Enumerated_Domain_Value_Definition: NO Observational Check was made for the positions
- Attribute:
-
- Attribute_Label: ELEV_ORDER
- Attribute_Definition:
-
Order of accuracy for the ELEVATION Should be 1,2, or 3 for Vertical Control Stations. Will be blank for stations used for Horizontal Control only. Also see attribute DIST_RATE which is used for some vertical control stations. Elevation order and class for 1, 2, and 3 are defined in the Federal Geodetic Control Committee publication "Standards and Specifications for Geodetic Control Networks". In addition- Vertical control which were determined only for the purpose of supplying a height for Horizontal Distance Reductions are assigned an order of 3. Class 0 is used for special cases of orthometric vertical control as follows-
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 1
- Enumerated_Domain_Value_Definition: class 0 - 2.0 mm or less
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 2
- Enumerated_Domain_Value_Definition: class 0 - 8.4 mm or less
- Enumerated_Domain:
-
- Enumerated_Domain_Value: 3
- Enumerated_Domain_Value_Definition: class 0 - 12.0 mm or less
- Attribute:
-
- Attribute_Label: ELEV_CLASS
- Attribute_Definition: Should be 0, 1, or 2 See details under ELEV_ORDER
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: ELEV_CHECK
- Attribute_Definition: Observational Check
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: Y
- Enumerated_Domain_Value_Definition: Observational Check was made for the orthometric height,
- Enumerated_Domain:
-
- Enumerated_Domain_Value: N
- Enumerated_Domain_Value_Definition: NO Observational Check was made for the orthometric heights
- Attribute:
-
- Attribute_Label: DIST_RATE
- Attribute_Definition:
-
Distribution rate for POSTED and READJUSTED benchmarks which do not have an Order and Class are as follows "Posted bench marks" are vertical control points in the NGS data base which were excluded from the NAVD 88 general adjustment. Some of the bench marks were excluded due to large adjustment residuals, possibly caused by vertical movement of the bench marks during the time interval between different leveling epochs. Adjusted NAVD 88 are computed for posted bench marks by supplemental adjustments. A range of mean distribution rate corrections is listed for each posted bench mark in the data portion of the publication. A summary table of the mean distribution rates and their codes is listed below. The mean distribution rate corrections which were applied to the original leveling observations is a good indication of the usefulness of the posted bench marks' adjusted NAVD 88 heights. POSTED BENCH MARKS SHOULD BE USED WITH CAUTION. As is the case for all leveling projects, the mandatory FGCS check leveling two-mark or three-mark tie procedure will usually detect any isolated movement (or other problem) at an individual bench mark. Of course, regional movement affecting all the marks equally is not detected by the two- or three-mark tie procedure.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: a
- Enumerated_Domain_Value_Definition: 0.0 thru 1.0 mm/km
- Enumerated_Domain:
-
- Enumerated_Domain_Value: b
- Enumerated_Domain_Value_Definition: 1.1 thru 2.0 mm/km
- Enumerated_Domain:
-
- Enumerated_Domain_Value: c
- Enumerated_Domain_Value_Definition: 2.1 thru 3.0 mm/km
- Enumerated_Domain:
-
- Enumerated_Domain_Value: d
- Enumerated_Domain_Value_Definition: 3.1 thru 4.0 mm/km
- Enumerated_Domain:
-
- Enumerated_Domain_Value: e
- Enumerated_Domain_Value_Definition: 4.1 thru 8.0 mm/km
- Enumerated_Domain:
-
- Enumerated_Domain_Value: f
- Enumerated_Domain_Value_Definition: greater than 8.0 mm/km
- Attribute:
-
- Attribute_Label: ELLP_ORDER
- Attribute_Definition:
-
Order of accuracy for the ELLIP_HT Should be 1,2,3,4, or 5 if present. The following ellipsoid height order and class relative accuracy standards have not yet been adopted by the Federal Geodetic Control Subcommittee, but are currently in use by NGS-. The ellipsoid height difference accuracy (b) is computed from a a minimally constrained correctly weighted least squares adjustment by - b = s / sqrt(d) where b = height difference accuracy s = propagated standard deviation of ellipsoid height difference in millimeters between control points obtained from the least squares adjustment. d = horizontal distance between control points in kilometers
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 1 - class 1
- Enumerated_Domain_Value_Definition: 0.5 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 1 - class 2
- Enumerated_Domain_Value_Definition: 0.7 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 2 - class 1
- Enumerated_Domain_Value_Definition: 1.0 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 2 - class 2
- Enumerated_Domain_Value_Definition: 1.3 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 3 - class 1
- Enumerated_Domain_Value_Definition: 2.0 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 3 - class 2
- Enumerated_Domain_Value_Definition: 3.0 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 4 - class 1
- Enumerated_Domain_Value_Definition: 6.0 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 4 - class 2
- Enumerated_Domain_Value_Definition: 15.0 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 5 - class 1
- Enumerated_Domain_Value_Definition: 30.0 (mm)/sqrt(km)
- Enumerated_Domain:
-
- Enumerated_Domain_Value: order 5 - class 2
- Enumerated_Domain_Value_Definition: 60.0 (mm)/sqrt(km)
- Attribute:
-
- Attribute_Label: ELLP_CLASS
- Attribute_Definition:
-
Class of accuracy for ELLIP_HT Should be 1 or 2 See details under ELLP_ORDER
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: FIRST_RECV
- Attribute_Definition:
-
Date when the station was first monumented or in the case of landmarks, first observed.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: LAST_RECV
- Attribute_Definition: Date when the station was last recovered.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: LAST_COND
- Attribute_Definition:
-
Last recovered condition of the mark. Should be one of the following- MONUMENTED FIRST OBSERVED GOOD POOR MARK NOT FOUND SEE DESCRIPTION DESTROYED
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: LAST_RECBY
- Attribute_Definition: Agency who reported the last condition of the mark.
- Attribute_Definition_Source: National Geodetic Survey
- Attribute:
-
- Attribute_Label: SAT_USE
- Attribute_Definition: Undefined by Source
- Attribute_Definition_Source: Unknown
- Attribute_Domain_Values:
- Attribute:
-
- Attribute_Label: SAT_DATE
- Attribute_Definition: Undefined by Source
- Attribute_Definition_Source: Unknown
- Attribute:
-
- Attribute_Label: STABILITY
- Attribute_Definition:
-
The stability of the mark may have 1 of 4 codes as indicated below-
- Attribute_Definition_Source: National Geodetic Survey
- Attribute_Domain_Values:
-
- Enumerated_Domain:
-
- Enumerated_Domain_Value: A
- Enumerated_Domain_Value_Definition: MOST RELIABLE AND EXPECTED TO HOLD POSITION/ELEVATION WELL
- Enumerated_Domain:
-
- Enumerated_Domain_Value: B
- Enumerated_Domain_Value_Definition: PROBABLY HOLD POSITION/ELEVATION WELL
- Enumerated_Domain:
-
- Enumerated_Domain_Value: C
- Enumerated_Domain_Value_Definition:
-
MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO SURFACE MOTION - E.G. FROST HEAVE, ETC
- Enumerated_Domain:
-
- Enumerated_Domain_Value: D
- Enumerated_Domain_Value_Definition: MARK OF QUESTIONABLE OR UNKNOWN STABILITY
- Attribute:
-
- Attribute_Label: DESCRIPT
- Attribute_Definition: GeoPlan added field based on QUAD
- Attribute_Definition_Source: GeoPlan
- Attribute:
-
- Attribute_Label: FGDLAQDATE
- Attribute_Definition: Date GeoPlan acquired data from source
- Attribute_Definition_Source: GeoPlan
- Attribute:
-
- Attribute_Label: AUTOID
- Attribute_Definition: Unique ID added by GeoPlan
- Attribute_Definition_Source: GeoPlan
- Overview_Description:
-
- Entity_and_Attribute_Detail_Citation:
-
All values were obtained from the NGA Datasheet
available at <http://www.ngs.noaa.gov/cgi-bin/datasheet.prl>
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization: Florida Geographic Data Library (FGDL)
- Contact_Person:
- Contact_Position:
- Contact_Address:
-
- Address_Type: mailing address
- Address: 431 Architecture PO Box 115706
- City: Gainesville
- State_or_Province: Florida
- Postal_Code: 32611-5706
- Country: United States
- Contact_Voice_Telephone:
- Contact_TDD/TTY_Telephone:
- Contact_Facsimile_Telephone:
- Contact_Electronic_Mail_Address: Web site: <http://www.fgdl.org>
- Contact_Electronic_Mail_Address: Technical Support: <http://www.fgdl.org/fgdlfeed.html>
- Contact_Electronic_Mail_Address: For FGDL Software: <http://www.fgdl.org/software.html>
- Contact_Electronic_Mail_Address:
-
FGDL Frequently Asked Questions: <http://www.fgdl.org/fgdlfaq.html>
- Contact_Electronic_Mail_Address: Mailing list for FGDL: <http://www.fgdl.org/fgdl-l.html>
- Hours_of_Service:
- Contact_Instructions:
- Resource_Description: DOWNLOADABLE DATA
- Distribution_Liability:
-
The Florida Geographic Data Library is a collection of Geospatial Data
compiled by the University of Florida GeoPlan Center with support from
the Florida Department of Transportation. GIS data available in FGDL is
collected from various state, federal, and other agencies (data sources)
who are data stewards, producers, or publishers. The data available in
FGDL may not be the most current version of the data offered by the
data source. University of Florida GeoPlan Center makes no guarantees
about the currentness of the data and suggests that data users check
with the data source to see if more recent versions of the data exist.
Furthermore, the GIS data available in the FGDL are provided 'as is'.
The University of Florida GeoPlan Center makes no warranties, guaranties
or representations as to the truth, accuracy or completeness of the data
provided by the data sources. The University of Florida GeoPlan Center
makes no representations or warranties about the quality or suitability
of the materials, either expressly or implied, including but not limited
to any implied warranties of merchantability, fitness for a particular
purpose, or non-infringement. The University of Florida GeoPlan Center
shall not be liable for any damages suffered as a result of using,
modifying, contributing or distributing the materials.
A note about data scale:
Scale is an important factor in data usage. Certain scale datasets
are not suitable for some project, analysis, or modeling purposes.
Please be sure you are using the best available data.
1:24000 scale datasets are recommended for projects that are at the
county level.
1:24000 data should NOT be used for high accuracy base mapping such
as property parcel boundaries.
1:100000 scale datasets are recommended for projects that are at the
multi-county or regional level.
1:125000 scale datasets are recommended for projects that are at the
regional or state level or larger.
Vector datasets with no defined scale or accuracy should be
considered suspect. Make sure you are familiar with your data
before using it for projects or analysis. Every effort has been
made to supply the user with data documentation. For additional
information, see the References section and the Data Source Contact
section of this documentation. For more information regarding
scale and accuracy, see our webpage at:
<http://geoplan.ufl.edu/education.html>
- Standard_Order_Process:
-
- Digital_Form:
-
- Digital_Transfer_Information:
-
- Format_Name: ShapeFile
- Format_Version_Number: 0.3.0
- File_Decompression_Technique: Download options include PC Zip and Unix compressed tar
- Transfer_Size: 1.352
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name:
-
<http://www.ngs.noaa.gov/cgi-bin/datasheet.prl?Explain=ShapeFiles>
- Access_Instructions:
-
Distributed through <http://www.ngs.noaa.gov/cgi-bin/datasheet.prl>
- Online_Computer_and_Operating_System: SUN Solaris
- Fees: free if you retrieve it yourself
- Technical_Prerequisites:
-
This data is intended for use with a Geographic Information Systems or Remote Sensing software package.
- Metadata_Reference_Information:
-
- Metadata_Date: 20040129
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Organization_Primary:
-
- Contact_Organization:
-
National Oceanic & Atmospheric Administration, National Geodetic Survey
- Contact_Person: NGS Information Services Branch
- Contact_Position: IT Specialist
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: SSMC2/9152 1315 East-west Highway
- City: Silver Spring
- State_or_Province: MD
- Postal_Code: 20910
- Country: USA
- Contact_Voice_Telephone: 301-713-3242
- Contact_Facsimile_Telephone: 301-713-4172
- Contact_Electronic_Mail_Address: ngs.software@noaa.gov
- Hours_of_Service: 8:30am to 5:00pm EST
- Contact_Instructions: Prefer EMail
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: local time
- Metadata_Access_Constraints:
-
Geodetic Data are in the public domain, not restricted
from access or distribution.
- Metadata_Use_Constraints:
-
not restricted;
Geodetic Data, including software were developed
and compiled with U.S. Government funding; no
proprietary rights may be attached to them nor may
they be sold to the U.S. Government as part of any
procurement of ADP products or services.
- Metadata_Security_Information:
-
- Metadata_Security_Classification_System: DOD
- Metadata_Security_Classification: unclassified
- Metadata_Security_Handling_Description: none
- Metadata_Extensions:
-
- Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
- Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Tue Jul 01 13:07:17 2014