Identification_Information: Citation: Citation_Information: Originator: Kerie Hitt Publication_Date: 20040927 Title: NAWQA GIS data: Generalized Boundaries of Surface-Water Regions Online_Linkage: Edition: 2 Browse_Graphic: Browse_Graphic_File_Name: Browse_Graphic_File_Description: This is a browse graphic of the dataset. Browse_Graphic_File_Type: GIF Description: Abstract: This data set consists of generalized boundaries of the NAWQA Surface-Water Regions (formerly called Major River Basins) proposed for regional synthesis in cycle II of NAWQA. For the most part, any Surface-water Purpose: This is one of the GIS base layers developed for DISPLAY of water-quality data. The data is not to be used for analysis. Supplemental_Information: The source of the data is the 1:2 million Hydrologic Unit Boundaries (November 2002) in the National Atlas. NAWQA Surface-Water Regions are combinations of Water-Resources Regions (2-digit HUCs) and are referenced by a number from 1-8. !1----- New England and Mid-Atlantic: CONN, DELR, HDSN, LINJ, NECB, PODL !2----- South Atlantic-Gulf and Tennessee: ACFB, ALBE, GAFL, MOBL, SANT, SOFL, TENN !3----- Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy: EIWA, LERI, LIRB, part of MISE, part of OZRK, UIRB, UMIS, WHMI, WMIC !4----- Missouri: CNBR, KANS, part of OZRK, SPLT, YELL !5----- Lower Mississippi, Arkansas-White-Red, and Texas-Gulf: ACAD, CACI, MISE, part of OZRK, SCTX, TRIN !6----- Rio Grande, Colorado, and Great Basin: CAZB, GRSL, NVBR, RIOG, UCOL !7----- Pacific Northwest: CCYK, PUGT, USNK, WILL !8----- California: SACR, SANJ, SOCA !9----- None: Great Lakes (water; included in this coverage in case the area is needed for display) !------ None: COOK, OAHU (excluded from this coverage) Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Currentness_Reference: Current. Status: Progress: Complete Maintenance_and_Update_Frequency: Occaisonally the HUC boundaries or Surface-Water Regions are refined. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -127.843466 East_Bounding_Coordinate: -65.385209 North_Bounding_Coordinate: 51.539989 South_Bounding_Coordinate: 23.254474 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: NAWQA Theme_Keyword: NAWQA Surface-Water Regions Theme_Keyword: Regional synthesis Theme_Keyword: Surface water quality Theme_Keyword: Water quality Theme_Keyword: Drainage basins Theme_Keyword: Watersheds Theme_Keyword: Hydrologic Units Access_Constraints: The data set is for internal USGS access only. Use_Constraints: The data set is for internal USGS use only. Cross_Reference: Citation_Information: Originator: Kerie Hitt Publication_Date: 20040908 Title: NAWQA GIS data: Boundaries of Surface-Water Regions Online_Linkage: Other_Citation_Details: This companion coverage is the full resolution version of the NAWQA Surface-Water Regions used by NAWQA for analyzing water-quality data. Data_Quality_Information: Logical_Consistency_Report: None. Completeness_Report: None. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: John Watermolen, USGS Publication_Date: 200211 Title: 1:2,000,000-Scale Hydrologic Unit Boundaries Edition: 2.3 Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Type_of_Source_Media: digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19981001 Source_Currentness_Reference: Ground condition Source_Citation_Abbreviation: HUC2M Source_Contribution: Polygons representing the 8-digit hydrologic units (cataloging units) downloaded from the National Atlas 03/05/2004. Process_Step: Process_Date: 20040305 Process_Description: Downloaded export file e_hucs00 from National Atlas map warehouse and imported to coverage. Re-projected from geographic to Albers projection. Selected the cataloging units in the water-resources regions comprising each Major River Basin and made 8 individual MRB coverages each coded by MRB. Polygons coded as water (PLYTYPE NE 0) are excluded. Process_Step: Process_Date: 20040618 Process_Description: Dissolved on MRB and appended the 8 intermediate coverages together to form a national coverage. Process_Step: Process_Date: 20040618 Process_Description: Generalized by 1775 and merged with standard NAWQA 1:34 million display coverage. Process_Step: Process_Date: 20040908 Process_Description: Revised REG 4 and REG 5 as requested by Dave Mueller. Generalized by 6000 m (to match the tolerance used when generalizing the NAWQA study unit boundary coverage NAWQAGENCYC2) and merged with the coastline of the standard NAWQA display coverage (NAWQAGENCYC2). Changed the field called MRB to REG to match revised terminology. Revised names to match Water Resources Region names. Process_Step: Process_Date: 20040927 Process_Description: Edited coverage to try to make the Surface-Water Region boundaries coincident with NAWQA study unit boundaries. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Complete chain Point_and_Vector_Object_Count: 77 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Point_and_Vector_Object_Count: 31 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 31 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 224 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Albers Conical Equal Area Albers_Conical_Equal_Area: Standard_Parallel: 29.5 Standard_Parallel: 45.5 Longitude_of_Central_Meridian: -96 Latitude_of_Projection_Origin: 23 False_Easting: 0.00000 False_Northing: 0.00000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.008192 Ordinate_Resolution: 0.008192 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378137.000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The data set is referenced by REG (Surface-Water Region) 1-8, assigned by NAWQA. !REG Water Resources Regions !1 New England and Mid-Atlantic !2 South Atlantic-Gulf and Tennessee !3 Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy !4 Missouri !5 Lower Mississippi, Arkansas-White-Red, and Texas-Gulf !6 Rio Grande, Colorado River and Great Basin !7 Pacific Northwest !8 California !9 Great Lakes (water; included in this coverage in case the area is needed for display) Entity_and_Attribute_Detail_Citation: The water resources names are consistent with those in USGS Water-Supply Paper 2294 - Hydrologic Unit Maps, by Paul Seaber, Paul Kapinos, and George Knapp. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie Hitt Contact_Organization: USGS NAWQA Nutrients National Synthesis Contact_Address: Address_Type: Mailing address Address: 413 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Electronic_Mail_Address: kjhitt@usgs.gov Contact_Voice_Telephone: 703 648-6854 Contact_Instructions: Contact via email Distribution_Liability: USGS assumes no liability for the use of this data set. Metadata_Reference_Information: Metadata_Date: 20040927 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie Hitt Contact_Organization: USGS NAWQA Nutrients National Synthesis Contact_Address: Address_Type: Mailing address Address: 413 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Electronic_Mail_Address: kjhitt@usgs.gov Contact_Voice_Telephone: 703 648-6854 Contact_Instructions: Contact via email Metadata_Standard_Name: Content standards for digital geospatial metadata Metadata_Standard_Version: FGDC-STD-001-1998