NATIONAL HYDROGRAPHY DATASET - HYDROGRAPHIC LANDMARK AREAS 1:100K

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and Florida Department of Environmental Protection.
Publication_Date: 20060501
Publication_Time: Unknown
Title:
NATIONAL HYDROGRAPHY DATASET - HYDROGRAPHIC LANDMARK AREAS 1:100K
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey
Other_Citation_Details: State of Florida
Online_Linkage: <http://www.dep.state.fl.us/>
Description:
Abstract:
This data set contains regions representing areal NHD hydrographic landmark features. The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. This layer is at a scale of 1:100,000 (Medium Resolution), the initial scale at which the NHD was developed. The same layer is available at a scale of 1:24,000 (High Resolution).
The NHD data was originally created by the USGS and EPA along with other federal, state, and local agencies. The FDEP is the NHD data steward for Florida. This data was originally in geodatabase format. When in shapefile format the data loses the network functionality of the geodatabase. Please contact the FDEP if you need the original geodatabase.
Last Updated, May, 2006
Purpose:
The NHD is a national framework for assigning reach addresses to water-related entities, such as industrial discharges, drinking water supplies, fish habitat areas, wild and scenic rivers. Reach addresses establish the locations of these entities relative to one another within the NHD surface water drainage network, much like addresses on streets. Once linked to the NHD by their reach addresses, the upstream/downstream relationships of these water-related entities--and any associated information about them--can be analyzed using software tools ranging from spreadsheets to geographic information systems (GIS). GIS can also be used to combine NHD-based network analysis with other data layers, such as soils, landuse and population, to help understand and display their respective effects upon one another. Furthermore, because the NHD provides a nationally consistent framework for addressing and analysis, water-related information linked to reach addresses by one organization (national, state, local) can be shared with other organizations and easily integrated into many different types of applications to the benefit of all.
NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on water bodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20060501
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: FWHYDROGRAPHY
Theme_Keyword: Hydrography
Theme_Keyword: Stream / River
Theme_Keyword: Lake / Pond
Theme_Keyword: Canal / Ditch
Theme_Keyword: Reservoir
Theme_Keyword: Spring / Seep
Theme_Keyword: Swamp / Marsh
Theme_Keyword: Artificial Path
Theme_Keyword: Reach Code
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1977, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions (Federal Information Processing Standards 10-3): Washington, D.C., National Institute of Standards and Technology.
Place_Keyword: US
Access_Constraints: NONE
Use_Constraints: NONE
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Florida Department of Environmental Protection
Contact_Position: NHD Coordinator
Contact_Address:
Address_Type: mailing address
Address: 3900 Commonwealth Boulevard M.S. 49
City: Tallahassee
State_or_Province: Florida
Postal_Code: 32399
Contact_Voice_Telephone: (850) 245-8550
Contact_Electronic_Mail_Address: GIS.Librarian@dep.state.fl.us
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: FGDL Mailing Lists: <http://www.fgdl.org/fgdl-l.html>
Data_Set_Credit: See dataset specific metadata.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
Cross_Reference:
Citation_Information:
Other_Citation_Details:
National Hydrography Dataset: <http://nhd.usgs.gov/>
The names and definitions of all feature types, characteristics, and values: <http://mapping.usgs.gov/standards/>
Fact Sheet is also available at: <http://erg.usgs.gov/isb/pubs/factsheets/fs06002.html>
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
GeoPlan relied on the integrity of the attribute information within the original data.
Logical_Consistency_Report:
Points, nodes, lines, and areas conform to topological rules. Lines intersect only at nodes, and all nodes anchor the ends of lines. Lines do not overshoot or undershoot other lines where they are supposed to meet. There are no duplicate lines. Lines bound areas and lines identify the areas to the left and right of the lines. Gaps and overlaps among areas do not exist. All areas close.
Completeness_Report:
The completeness of the data reflects the content of the sources, which most often are the published USGS topographic quadrangle and/or the USDA Forest Service Primary Base Series (PBS) map. The USGS topographic quadrangle is usually supplemented by Digital Orthophoto Quadrangles (DOQs). Features found on the ground may have been eliminated or generalized on the source map because of scale and legibility constraints. In general, streams longer than one mile (approximately 1.6 kilometers) were collected. Most streams that flow from a lake were collected regardless of their length. Only definite channels were collected so not all swamp/marsh features have stream/rivers delineated through them. Lake/ponds having an area greater than 6 acres were collected. Note, however, that these general rules were applied unevenly among maps during compilation. Reaches codes are defined on all features of type stream/river, canal/ditch, artificial path, coastline, and connector. Waterbody reach codes are defined on all lake/pond and most reservoir features. Names were applied from the GNIS database. Detailed capture conditions are provided for every feature type in the Standards for National Hydrography Dataset available online through <http://mapping.usgs.gov/standards/>. This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Statements of horizontal positional accuracy are based on accuracy statements made for U.S. Geological Survey topographic quadrangle maps. These maps were compiled to meet National Map Accuracy Standards. For horizontal accuracy, this standard is met if at least 90 percent of points tested are within 0.02 inch (at map scale) of the true position. Additional offsets to positions may have been introduced where feature density is high to improve the legibility of map symbols. In addition, the digitizing of maps is estimated to contain a horizontal positional error of less than or equal to 0.003 inch standard error (at map scale) in the two component directions relative to the source maps. Visual comparison between the map graphic (including digital scans of the graphic) and plots or digital displays of points, lines, and areas, is used as control to assess the positional accuracy of digital data. Digital map elements along the adjoining edges of data sets are aligned if they are within a 0.02 inch tolerance (at map scale). Features with like dimensionality (for example, features that all are delineated with lines), with or without like characteristics, that are within the tolerance are aligned by moving the features equally to a common point. Features outside the tolerance are not moved; instead, a feature of type connector is added to join the features.
This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Statements of vertical positional accuracy for elevation of water surfaces are based on accuracy statements made for U.S. Geological Survey topographic quadrangle maps. These maps were compiled to meet National Map Accuracy Standards. For vertical accuracy, this standard is met if at least 90 percent of well-defined points tested are within one-half contour interval of the correct value. Elevations of water surface printed on the published map meet this standard; the contour intervals of the maps vary. These elevations were transcribed into the digital data; the accuracy of this transcription was checked by visual comparison between the data and the map. This statement is generally true for the most common sources of NHD data. Other sources and methods may have been used to create or update NHD data. In some cases, additional information may be found in the NHDMetadata table.
Lineage:
Source_Information:
Source_Scale_Denominator: 100000
Type_of_Source_Media: online
Source_Citation_Abbreviation: FDEP
Source_Contribution: Spatial and Attribute Information
Process_Step:
Process_Description:
The processes used to create and maintain high-resolution NHD data can be found in the table called "NHDMetadata". Because NHD data can be downloaded using several user-defined areas, the process descriptions can vary for each download. The NHDMetadata table contains a list of all the process descriptions that apply to a particular download. These process descriptions are linked using the DuuID to the NHDFeatureToMetadata table which contains the com_ids of all the features within the download. In addition, another table, the NHDSourceCitation, can also be linked through the DuuID to determine the sources used to create or update NHD data.
Process_Date: Unknown
Process_Step:
Process_Description:
Converted NHD data to geodatabase format. Conversion included assignment of FCodes, FDate, and Resolution attribute values; assignment of reach codes to associated features; replacement of branched reaches with linear reaches; merge of area features with identical classification that adjoin or overlap; split of large area features that exceed 100/25 sq. km. (depending on feature type) at subbasin boundaries; reduction of feature classes, feature types, and attribution to simplify data; merge of network flow features at vertical relationship locations; conversion of artificial paths along coastline to coastline feature type; addition of M coordinates and values to network flow features; addition of Z coordinates, but not values, to all feature geometry; addition of value added attributes; switch to primary flow navigation by network features (NHDFlowline, route.drain) in place of reach features; and elimination of metadata boundaries.
Process_Date: 2004
Process_Step:
Process_Description: See dataset specific metadata.
Process_Step:
Process_Description:
GeoPlan downloaded this dataset from the Florida Department of Environmental Protection. The data was downloaded as a personal geodatabase and was in the following projection: Albers HPGN, Units: meters.
The feature class NHDAREA was converted to shapefile via ArcCatalog 9.2. Feature Type and Descriptions were joined to the shapefile based on the field FCODE. The join table was based of information gathered at: <http://nhd.usgs.gov/NHDinGEO_FCodes_by_layer.pdf>
Additional details to be used in metadata were gathered from the following link: <http://nhd.usgs.gov/NHD.pdf>

- All records were upcased. - Changed projection file to FGDL Albers - DESC_ field was added and calculated based on FCODE Descriptions - A DESCRIPT field was added based on Feature Type - A FGDLAQDATE field was added based on date GeoPlan downloaded the data
Source_Used_Citation_Abbreviation: GeoPlan
Process_Date: 20070815
Process_Step:
Process_Description: Data imported to ArcSDE and exported as a shapefile.
Source_Used_Citation_Abbreviation: GeoPlan
Process_Date: 20090619
Process_Step:
Process_Description: Dataset copied.
Source_Used_Citation_Abbreviation:
Server=delphi.geoplan.ufl.edu; Service=5151; User=etat; Version=SDE.DEFAULT
Process_Date: 20090619
Process_Time: 17140700
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 808
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: D_North_American_1983_HARN
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
Altitude_Resolution: 1.000000
Altitude_Distance_Units: meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: NHD100AREA_MAY06
Entity_Type_Definition: NHD100AREA_MAY06.DBF
Entity_Type_Definition_Source: USGS
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: COMID
Attribute_Definition: Uniquely identifies the occurrence of each feature
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: FDATE
Attribute_Definition: Date of last feature modification
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: RESOLUTION
Attribute_Definition: Resolution Code for source resolution
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition: Local
Enumerated_Domain:
Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition: High Resolution
Enumerated_Domain:
Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: Medium Resolution
Attribute:
Attribute_Label: GNIS_ID
Attribute_Definition: Unique identifier assigned by GNIS
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: GNIS_NAME
Attribute_Definition:
Proper name specific term or expression by which a particular geographic entity is known
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: AREASQKM
Attribute_Definition: Area of areal features Albers Equal Area
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: ELEVATION
Attribute_Definition:
Elevation of water surfaces where water pools is encoded for a few features
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: FTYPE
Attribute_Definition: Three digit integer value unique identifier of a feature type
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: FCODE
Attribute_Definition:
Five-digit integer value comprised of the feature type and combinations of characteristics and values
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: THINNERCOD
Attribute_Definition: Not defined by Source
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: DESC_
Attribute_Definition:
Description field, which holds a character string that contains all characteristics and values associated with a feature code.
Attribute_Definition_Source: USGS
Attribute:
Attribute_Label: DESCRIPT
Attribute_Definition: GeoPlan added field based on Feature Type.
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
Attribute:
Attribute_Label: SHAPE.AREA
Attribute_Definition: Area in meters
Attribute_Definition_Source: GeoPlan
Attribute:
Attribute_Label: SHAPE.LEN
Attribute_Definition: Perimeter in meter
Attribute_Definition_Source: GeoPlan
Overview_Description:
Entity_and_Attribute_Overview:
The National Hydrography Dataset is a comprehensive set of digital spatial data that encodes information about naturally occurring and constructed bodies of water, paths through which water flows, and related entities. The information encoded about features includes a feature date, classification by type, other characteristics, a unique common identifier, the feature length or area, and (rarely) elevation of the surface of water pools and a description of the stage of the elevation. For reaches, encoded information includes a reach code. Names and their identifiers in the Geographic Names Information System, are assigned to most feature types. The direction of flow is encoded for networked features. The data also contains relations that encode metadata, and information that supports the exchange of future updates and improvements to the data. The names and definitions of all feature types, characteristics, and values are in the Standards for National Hydrography Dataset: Reston, Virginia, U.S. Geological Survey, 1999. The document is available online through <http://mapping.usgs.gov/standards/>.
Entity_and_Attribute_Detail_Citation:
The names and definitions of all feature types, characteristics, and values are in U.S. Geological Survey, 1999, Standards for National Hydrography Dataset High Resolution: Reston, Virginia, U.S. Geological Survey. The document is available online through <http://mapping.usgs.gov/standards/>. Information about tables and fields in the data are available from the user documentation for the National Hydrography Dataset at <http://nhd.usgs.gov>. The National Map - Hydrography Fact Sheet is also available at: <http://erg.usgs.gov/isb/pubs/factsheets/fs06002.html>.
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: ArcGIS Geodatabase
Format_Version_Number: 8.3
File_Decompression_Technique: tar and uncompress
Transfer_Size: 11.410
Technical_Prerequisites:
This data is intended for use with a Geographic Information Systems or Remote Sensing software package.
Metadata_Reference_Information:
Metadata_Date: 20090630
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Florida Department of Environmental Protection
Contact_Position: NHD Coordinator
Contact_Address:
Address_Type: mailing address
Address: 3900 Commonwealth Boulevard M.S. 49
City: Tallahassee
State_or_Province: FL
Postal_Code: 32399
Country: USA
Contact_Voice_Telephone: (850) 245-8550
Contact_Voice_Telephone: 1 888 275 8747
Contact_Electronic_Mail_Address: GIS.Librarian@dep.state.fl.us
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
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 Jun 30 13:28:25 2009