1992 Galveston Bay NWI Habitat Data Reprojected NAD83

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey, BRD National Wetlands Research Center
Publication_Date: 200206
Title: 1992 Galveston Bay NWI Habitat Data Reprojected NAD83
Description:
Abstract:
This data set consists of reprojected National Wetlands Inventory data for the Galveston Bay Area. The data includes the 32 1:24,000 quadrangles comprising the bay. The original datum was North American Datum of 1927. For the Galveston Bay Wetlands Project, all data are in NAD83.
Purpose: To provide habitat information for Galveston Bay in 1992
Supplemental_Information:
This metadata record was generated using the metadata written for the original data set. Please search the FGDC clearinghouse for NWI habitat data for the metadata at <http://www.fgdc.gov>
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1992
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -95.375
East_Bounding_Coordinate: -94.375
North_Bounding_Coordinate: 30.875
South_Bounding_Coordinate: 29.000
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: wetlands
Theme_Keyword: habitat
Theme_Keyword: coastal
Theme_Keyword: coastal habitats
Theme_Keyword: mapping
Theme_Keyword: aerial photography
Theme_Keyword: vegetation
Theme_Keyword: GIS
Theme_Keyword: geographic information system
Theme_Keyword: reprojection
Place:
Place_Keyword_Thesaurus: USGS Quadrangle Names
Place_Keyword: Christmas Point
Place_Keyword: Anahuac
Place_Keyword: Smith Point
Place_Keyword: Dickinson
Place_Keyword: Texas City
Place_Keyword: Umbrella Point
Place_Keyword: Oyster Creek
Place_Keyword: Port Bolivar
Place_Keyword: Lake Stephenson
Place_Keyword: Lake Como
Place_Keyword: Bacliff
Place_Keyword: Caplen
Place_Keyword: The Jetties
Place_Keyword: Oak Island
Place_Keyword: Oyster Bayou
Place_Keyword: San Luis Pass
Place_Keyword: League City
Place_Keyword: Mount Belvieu
Place_Keyword: High Island
Place_Keyword: La Porte
Place_Keyword: South of Galveston
Place_Keyword: Virginia Point
Place_Keyword: Sea Isle
Place_Keyword: Cove
Place_Keyword: Morgans Point
Place_Keyword: Frozen Point
Place_Keyword: Flake
Place_Keyword: Highlands
Place_Keyword: Hitchcock
Place_Keyword: Hoskins Mound
Place_Keyword: Texas
Place_Keyword: Coastal Texas
Place_Keyword: Southeast Texas
Place_Keyword: Galveston
Access_Constraints: None
Use_Constraints:
For the original metadata record - Federal, State and local regulatory agencies with jurisdiction over wetlands may define and describe wetlands in a different manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to define the limits of proprietary jurisdiction of any Federal, State, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modifications within or adjacent to wetland areas should seek the advice of appropriate Federal, State, or local agencies concerning specified agency regulatory programs and proprietary jurisidictions that may affect such activities.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - BRD National Wetlands Research Center
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: LA
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337 266-8500
Data_Set_Credit:
The U.S.Geological Survey would like to acknowledge the U.S. Fish and Wildlife Service, National Wetlands Inventory for the use of the NWI habitat data.
Native_Data_Set_Environment: ESRI, ARC GIS 8.1
Cross_Reference:
Citation_Information:
Originator: U.S. Fish and Wildlife Service, National Wetlands Inventory
Publication_Date: 1992
Title: National Wetlands Inventory
Geospatial_Data_Presentation_Form: Digital vector data
Publication_Information:
Publication_Place: St. Petersburg, FL
Publisher: U.S. Fish and Wildlife Service, National Wetlands Inventory
Online_Linkage: <ftp://ftp.nwi.fws.gov/arcdata>
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Due to the reprojection, polygon topology was removed and attribute labels were converted into "points". When topology was rebuilt, the attribute labels reappeared. All coverages were check on-screen for missing labels.
Logical_Consistency_Report:
From the original metadata record - Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pair. No duplicate features exist or duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line segment. The neatline is generated by connecting the four corners of the digital file, as established during initialization of the digital file. All data crossing the neatline are clipped to the neatline and data within a specified tolerance of the neatline are snapped to the neatline. Tests for logical inconsistency are performed by quality control verification software (USFWS-NWI).
Completeness_Report:
From the original metadata record - NWI maps do not show all wetlands, but attempt to show most photointerpretable wetlands given considerations of map/photo scale and wetland delineation practices. A target mapping unit (tmu) is an estimate of the size class of the smallest group of wetlands that NWI attempts to map consistently; it is not the smallest wetland mapped. Recognize that some wetland types are conspicuous and readily mapped (e.g., marshes and ponds) and smaller ones may be mapped. Drier wetlands and forested wetlands (especially evergreen) are more difficult to photointerpret and larger ones may be missed. The tmu also varies with photo scale; in forested regions, the tmu may be 3-5 aces (1:80K photos), 1-3 acres (1:58K), or l acre (1:40K). NWI maps should show most wetlands larger than the tmu. In the treeless prairies, a 1/4 acre tmu is possible due to the openness of terrain and occurrence of wetlands in distinct depressions. Take notice of the photo scale/type used to make the maps (see legend) and realize that black and white photos tend to yield more conservative interpretations than color infrared film. Most farmed wetlands (e.g., mucklands) are usually not mapped, except for pothole-type wetlands, cranberry bogs, and diked former tidelands (Sacramento Valley). Partly drained wetlands are conservatively mapped due to photointerpretation limitations. No attempt was made to identify regulated wetlands from other wetlands. Recognize that maps produced through photointerpretation are not as accurate as one prepared from the on-ground surveys, so NWI boundaries are generalized.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal positional accuracy is based upon the original data source. Please see the original metadata for further information.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Fish and Wildlife Service, National Wetlands Inventory
Publication_Date: 1992
Title: National Wetlands Inventory
Geospatial_Data_Presentation_Form: Digital vector data
Publication_Information:
Publication_Place: St. Petersburg, FL
Publisher: U.S. Fish and Wildlife Service, National Wetlands Inventory
Online_Linkage: <ftp://ftp.nwi.fws.gov/arcdata>
Source_Scale_Denominator: 24000
Type_of_Source_Media: digital database file
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1992
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: NWI
Source_Contribution: The primary data source for the reprojected NAD83 data
Process_Step:
Process_Description:
The projection utility function in ARC GIS 8.1 was used to convert the original datum to NAD83. Polygon topology was rebuilt, using the "build" function and the points functioning as labels.
Process_Date: 200205
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Frank Heitmuller
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 8027 Exchange Drive
City: Austin
State_or_Province: TX
Postal_Code: 78754
Country: USA
Contact_Voice_Telephone: 512 927-3561
Contact_Electronic_Mail_Address: ftheitmu@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 15
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -87.00
Latitude_of_Projection_Origin: 0
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: Coordinate Pair
Coordinate_Representation:
Abscissa_Resolution: 0.61
Ordinate_Resolution: 0.61
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Wetland
Entity_Type_Definition:
Wetlands are lands transitional between terrestrial and aquatic systems where the water table is usually at or near the surface or the land is covered by shallow water. For purposes of this classification wetlands must have one or more of the following three attributes: 1) at least periodically, the land supports predominantly hydrophytes; 2) the substrate is predominantly undrained hydric soil; and 3) the substrate is non-soil and is saturated with water or covered by shallow water at some time during the growing season of each year.
Entity_Type_Definition_Source: National Wetlands Inventory, metadata record
Attribute:
Attribute_Label: Wetland classification
Attribute_Definition: Classification of the wetland
Attribute_Definition_Source:
Cowardin, L.M., V. Carter, F. Golet, and E. LaRoe. 1979. Classificaiton of wetlands and deepwater habitats of the United States. U.S. Fish and Wildlife Service. 103 pp.
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Valid wetland classification code list
Codeset_Source:
Photointerpretation Conventions for the National Wetlands Inventory, January 1995

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, National Wetlands Research Center
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: LA
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337 266-8500
Contact_Facsimile_Telephone: 337 266-8513
Distribution_Liability:
Although these data have been processed successfully on a computer system at the National Wetlands Research Center, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from a Biological Resources Division server, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. NWRC shall not be held liable for improper or incorrect use of the data described and/or contained herein. So, these data are provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties or merchantability and fitness for a particular purpose. Also, use of trade names or commercial products in this metadata is solely for the purpose of providing specific information, and does not imply recommendation or endorsement by the US Government. Any downloading and use of these data signifies a user's agreement to comprehension and compliance of the NWRC Standard Disclaimer. Insure all portions of metadata are read and clearly understood before using these data in order to protect both user and NWRC interests.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Version_Number: 8.1
File_Decompression_Technique: None
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://gisweb.nwrc.gov>
Fees: None, if available online
Custom_Order_Process: None
Metadata_Reference_Information:
Metadata_Date: 20020801
Metadata_Review_Date: 2002
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Biological Resources Division, National Wetlands Research Center
Contact_Position: Metadata Specialist
Contact_Address:
Address_Type: mailing and physical address
Address: 700 Cajundome Blvd
City: Lafayette
State_or_Province: LA
Postal_Code: 70506
Country: USA
Contact_Voice_Telephone: 337-266-8500
Contact_Facsimile_Telephone: 337-266-8513
Hours_of_Service: 8:00 am to 4:00 pm CST Monday thru Friday
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Generated by mp version 2.7.33 on Thu Jul 21 13:47:46 2005