Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey in cooperation with the U.S. Department of Agriculture, Natural Resources Conservation Service Publication_Date: 2002 Title: Hydrologic unit boundaries for Puerto Rico - 6th level Publication_Information: Publication_Place: San Juan, Puerto Rico Publisher: U.S. Geological Survey Description: Abstract: This geospatial dataset is a hydrologic unit boundary layer for Puerto Rico that is at the subwatershed (12-digit) level. The data set was developed by delineating the boundary lines on USGS 1:20,000 scale topographic base maps, digitizing the lines, and then attributing the polygons and lines. This data set consists of geo-referenced digital map data and associated attributes. The hydrologic unit code attached to each delineated polygon is linked to the attribute data, which can contain information on area in acres, non-contributing area, state(s) the HU falls within, name for 5th and 6th level HU, 5th and 6th level code for downstream hydrologic unit, and hydrologic unit modifications. Each line has attributes that describe the HU level (1-6), originating source for that line and a metadata ID number that links the line to its associated metadata file. The geographic extent of the map data includes Puerto Rico, Vieques, Culebra and Mona. Purpose: The watershed and subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. These smaller sized hydrologic units are useful in many programs supported by the Natural Resources Conservation Service and others. This data set is intended as a tool for water-resource management and planning activities, particularly for site-specific and localized studies which require the amount of detail provided by a large-scale map. Supplemental_Information: The hydrologic unit boundaries at the watershed (10-digit) and subwatershed (12-digit) levels were developed by delineating the watersheds based on topographic contours and hydrographic features shown on USGS 1:20,000 scale topographic base maps. The resulting polygons were then digitized and attributed using the ARC/INFO geographic information system software (by ESRI). The National Instruction No. 170-304 and the Federal Standards for delineation of Hydrologic Unit Boundaries-DRAFT of June 12,2001 describe the guidelines for delineation and digitization of hydrologic unit boundaries. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ARC/INFO format, this metadata may include some ARC/INFO-specific terminology. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19820101 Currentness_Reference: Publication date of USGS Topographic maps for Puerto Rico Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -67.96 East_Bounding_Coordinate: -65.22 North_Bounding_Coordinate: 18.52 South_Bounding_Coordinate: 17.92 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Hydrologic units Theme_Keyword: Watershed Boundaries Theme_Keyword: Subwatershed Boundaries Place: Place_Keyword_Thesaurus: Counties and Country Equivalents of the United States and the District of Columbia Place_Keyword: Puerto Rico Place_Keyword: Culebra Place_Keyword: Vieques Place_Keyword: Mona Access_Constraints: None Use_Constraints: The U.S. Geological Survey and the U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data. These data should not be used at scales greater than 1:20,000. This is public information and may be interpreted by organizations, agencies, units of government, or others; however, they are responsible for the appropriate application of the data. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service or the U.S. Geological Survey any authority for the decisions they make. The Natural Resources Conservation Service will not perform any evaluations of these maps or purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can cause misrepresentation of the data. If enlarged, the maps will not show the fine detail that would be necessary for accurately determining spatial relationships. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Organization: U.S. Department of Agriculture, Natural Resources Conservation Service Contact_Person: Staff Contact_Position: Staff, Geospatial Databases Branch Contact_Address: Address_Type: mailing address Address: 501 W. Felix St. Bldg. 23 P.O. Box 6567 City: Fort Worth State_or_Province: Texas Postal_Code: 76115 Contact_Voice_Telephone: 800-672-5559 Contact_Electronic_Mail_Address: datahelp@ftw.usda.gov Native_Data_Set_Environment: Windows NT Operating System ARC/INFO version 8.1 Cross_Reference: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 1975 Title: Hydrologic Unit Map - 1974 Caribbean Region Geospatial_Data_Presentation_Form: Map Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Polygon identifiers are manually checked with the original base map using the attribute file. Verification on polygon identification continuity on each side of a neatline is done visually on the screen as adjacent quadrangles representations are assembled into larger area data layers. Logical_Consistency_Report: Certain node/geometry and topology (GT) polygon/chain relationships are collected or generated to satisfy topological requirements. (The GT- polygon corresponds to a hydrologic unit or a portion of a hydrologic unit at the edge of a quadrangle sheet.) Some of these requirements include: chains must begin and end at nodes, left and right GT-polygons are defined for each chain element and are consistent throughout, and the chains representing the limits of the file (neatline) are free of gaps. The tests of logical consistency are performed using vendor software. All internal polygons are tested for closure with vendor software and are checked on hard copy plots. All data are checked for common boundary lines (i.e., adjacent polygons with the same label). Quadrangles are edge matched within the subwatershed area and edge locations generally do not deviate from centerline more than 0.01 inches. Completeness_Report: The hydrologic unit boundaries at the watershed (10-digit) and subwatershed (12-digit) levels, were developed by delineating the watersheds based on topographic contours and hydrographic features shown on USGS 1:20,000 scale base maps. The resulting polygons were then digitized and attributed using ARC/INFO geographic information system software (by ESRI). The areas of many of the 10-digit and 12-digit hydrologic units differ from the recommended watershed and subwatershed sizes as outlined in the Federal Standards for delineation of Hydrologic Unit Boundaries-DRAFT June 12, 2001. Watersheds, typically 40,000 to 250,000 acres, are 646 to 188,041 acres and subwatersheds, typically 10,000 to 40,000 acres, are 220 to 85,553 acres for Puerto Rico. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The accuracy of these maps is generally based on the contour information or DEM data available for the base maps. The differences in positional accuracy between the hydrologic unit boundaries and their digitized map locations is unknown. Hydrologic unit boundaries generally were digitized within 0.01 inches of their locations on the digitizing source. The digital map elements are edge matched against the data for the adjacent quadrangle. Edge match locations generally do not deviate from centerline to centerline by more than 0.01 inches. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, National Mapping Division Publication_Date: 1982 Title: USGS Topographic maps for Puerto Rico, 7.5 series Geospatial_Data_Presentation_Form: DLG Publication_Information: Publication_Place: Colorado, U.S. Publisher: U.S. Geological Survey Source_Scale_Denominator: 20000 Type_of_Source_Media: magnetic tape Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1982 Source_Currentness_Reference: Date of photo revision of the USGS topographic maps (by quadrangle) for Puerto Rico Source_Citation_Abbreviation: USGS Topo quads Source_Contribution: Topographic contours base map for hydrologic units delineation. Process_Step: Process_Description: Hydrologic unit boundaries delineation based on topographic contours and hydrography Process_Date: 2001 Source_Used_Citation_Abbreviation: USGS Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 243 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 894 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 244 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator UTM_Zone_Number: 19 Transverse_Mercator Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -69.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 21.69261021783 Ordinate_Resolution: 21.69261021783 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS1980 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: Hydrologic unit delineations are closed polygons that encompass all area draining toward the lowest point (called outlet) in the polygon. Nominal sizes for the different hydrologic unit level in Puerto Rico differ from typical sizes as recommended in NRCS guidelines (1). Watersheds, typically 40,000 to 250,000 acres, are 646 to 188,041 acres and subwatersheds, typically 10,000 to 40,000 acres, are 220 to 85,553 acres for Puerto Rico. Some polygons do not include all areas up to the drainage divide but all areas to one or more other upstream hydrologic units. A unique hydrologic unit code is used to identify each hydrologic unit. The hydrologic unit codes start with the 8-digit Sub-basin (sub-basin) number that contains the Watershed. Likewise the Subwatershed hydrologic unit codes start with the 10-digit Watershed number that contains the Subwatershed. Attributes associated with a hydrologic unit code includes: Huc_8, Huc_10, Huc_12, acres, state, non-contributing area (acres), Hu_10_downstream, Hu_10_name, Hu_10_mod, Hu_10_type, Hu_12_downstream, HU_12_name, HU_12_mod, Hu_12_type, Hu_level, Linesource, Meta_id. Attributes in the ARC/INFO coverage Polygon Attribute > >PR_HU12SP.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 PR_HU12SP# 4 5 B - > 21 PR_HU12SP-ID 4 5 B - > 25 HUC_8 8 8 C - > 33 HUC_10 10 10 C - > 43 HUC_12 12 12 C - > 55 ACRES 8 12 F 0 > 63 STATES 11 11 C - > 74 NCONTRB_A 8 12 F 0 > 82 HU_10_DS 10 10 C - > 92 HU_10_NAME 80 80 C - > 172 HU_10_MOD 20 20 C - > 192 HU_10_TYPE 1 1 C - > 193 HU_12_DS 12 12 C - > 205 HU_12_NAME 80 80 C - > 285 HU_12_MOD 20 20 C - > 305 HU_12_TYPE 1 1 C - > 306 REMARKS 30 30 C - > ** REDEFINED ITEMS ** > 43 HU8 8 8 I - > 51 HU10 2 2 I - > 53 HU12 2 2 I - > > >PR_HU12SP.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 PR_HU12SP# 4 5 B - > 29 PR_HU12SP-ID 4 5 B - > 33 HU_LEVEL 1 1 I - > 34 LINESOURCE 20 20 C - > 54 META_ID 4 4 C - > > Entity_and_Attribute_Detail_Citation: None Detailed_Description: Entity_Type: Entity_Type_Label: PR_HU12SP.PAT Entity_Type_Definition: Polygon Attribute Table Entity_Type_Definition_Source: ESRI, Arc/Info Software Attribute: Attribute_Label: AREA Attribute_Definition: Area of polygon in square coverage units Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -8.87094E+09 to 346220928.000 Enumerated_Domain_Value_Definition: numeric Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of polygon in coverage units Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 59.248 TO 195628.984 Enumerated_Domain_Value_Definition: numeric Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: PR_HU12SP# Attribute_Definition: Internal feature number Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1-263 Enumerated_Domain_Value_Definition: integer Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: PR_HU12SP-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0-264 Enumerated_Domain_Value_Definition: integer Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: HUC_8 Attribute_Definition: 8-digit hydrologic unit code for the polygon. Includes region (digits 1 and 2), subregion (digits 3 and 4), accounting unit (digits 5 and 6), and cataloging unit (digits 7 and 8) codes. Attribute_Definition_Source: U.S. Geological Survey, 1974; U.S. Department of Agriculture, Soil Conservation Service, 1991; Federal Information Processing Standard Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 21010001 - 21010006 Enumerated_Domain_Value_Definition: 8-DIGIT CODE, CHARACTER Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey, 1974; U.S. Department of Agriculture, Soil Conservation Service, 1991; Federal Information Processing Standard Attribute: Attribute_Label: HUC_10 Attribute_Definition: 10-digit hydrologic unit code (5th level)for the polygon. Includes region, subregion, accounting unit, cataloging unit, watershed (digits 9-10) codes. Attribute_Definition_Source: U.S. Geological Survey, 1974; U.S. Department of Agriculture, Soil Conservation Service, 1991; Federal Information Processing Standard Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2101000201-2101000603 Enumerated_Domain_Value_Definition: 10 DIGIT CODE, CHARACTER Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: HUC_12 Attribute_Definition: Entire 12-digit hydrologic unit code (6th level) for the polygon. Includes region, subregion, accounting unit, cataloging unit, watershed, and subwatershed (digits 11-12) codes. Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 210100020101-210100060300 Enumerated_Domain_Value_Definition: 12-DIGIT CODE, CHARACTER Enumerated_Domain_Value_Definition_Source: U.S. Geological Survey, 1974; U.S. Department of Agriculture, Soil Conservation Service, 1991; Federal Information Processing Standard Attribute: Attribute_Label: ACRES Attribute_Definition: Area of polygon in acres Attribute_Definition_Source: Computed from AREA attribute Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0.06 - 85552.70 Enumerated_Domain_Value_Definition: numeric Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: STATES Attribute_Definition: 2-chareacter state postal abbreviation for states where the subwatershed is present Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PR Enumerated_Domain_Value_Definition: character Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: NCONTRB_A Attribute_Definition: The total of the non-contributing areas within the hydrologic unit in acres. Attribute_Definition_Source: computed from the ACRES attribute Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0-85553 Enumerated_Domain_Value_Definition: numeric Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: HU_10_DS Attribute_Definition: 10-digit of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level HU falls within. Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 2101000201-2101000603 or Ocean Enumerated_Domain_Value_Definition: 10 DIGIT CODE, CHARACTER Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: HU-10_NAME Attribute_Definition: Name assigned to 10-digit hydrologic unit or watershed name Attribute_Definition_Source: Assigned Attribute_Domain_Values: Unrepresentable_Domain: watershed names Attribute: Attribute_Label: HU_10_MOD Attribute_Definition: Fifth Level Hydrologic Unit Modifications. This field identifies the types of modifications to natural overland flow present in the 10-digit HU. Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: Enumerated_Domain: SC - Stormwater Canal or Drainage Canal ID - Irrigation Ditch IT - Interbasin Transfer BC - Barge Canal or Navigation Canal SD - Stormwater Ditch PD - Pipe Diversion CD - Channel Diversion NC - Noncontributing Area KA - Karst LE - Levee NM - No Modifications OC - Overflow Channel or Flume DM - Dam at outlet or HU boundary GC - General Canal/Ditch PS - Pumping Station DD - Drainage Ditch SI - Siphon AD - Aqueduct RS - Reservoir TF - Transportation Feature (road, railroad, docks etc.) GF - Ground-Water Flow MA - Mining Activity UA - Urban Area GL - Glacier IF - Ice Field OF - Overbank Flow OT - Other Attribute: Attribute_Label: HU_10_TYPE Attribute_Definition: Fifth Level Hydrologic Unit type. Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S,C,F,M,W,I,U Enumerated_Domain_Value_Definition: One character: S - Standard hydrologic unit - Any land HU with drainage flowing to a single outlet point, excluding non-contributing areas. C - Closed Basin - A drainage area 100% non-contributing. All surface flow is internal, no overland flow leaves the HU through the outlet point. F - Frontal hydrologic unit - Areas along the coastline of lakes, oceans, bays, etc. that have more than one outlet. M - “Multiple Outlet” hydrologic unit An area that has more than one natural outlet; for example, an outlet located on a stream with multiple channels. This does not include frontal or water hydrologic units, hydrologic units with artificial interbasin transfers, drainage outlets through karst or ground-water flow, or outlets that cross a stream with an island. This code should be used only in rare instances. W - Water hydrologic unit - HU that are predominantly water with adjacent land areas, ex. lake, estuaries, harbors. I - Island hydrologic unit - A HU that is one or more islands and adjacent water out to the toe of the shore face. Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: HU_12_DS Attribute_Definition: 12-digit code of the 6th level hydrologic unit that is receiving the majority of the flow from the subwatershed. Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 210100020101-210100060300 or Ocean Enumerated_Domain_Value_Definition: 12 DIGIT CODE, CHARACTER Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: HU-12_NAME Attribute_Definition: Name assigned to 12-digit hydrologic unit or subwatershed name Attribute_Definition_Source: Assigned Attribute_Domain_Values: Unrepresentable_Domain: subwatershed name Attribute: Attribute_Label: HU_12_MOD Attribute_Definition: Sixth Level Hydrologic Unit Modifications. This field identifies the types of modifications to natural overland flow present in the 12-digit HU. Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: SC - Stormwater Canal or Drainage Canal ID - Irrigation Ditch IT - Interbasin Transfer BC - Barge Canal or Navigation Canal SD - Stormwater Ditch PD - Pipe Diversion CD - Channel Diversion NC - Noncontributing Area KA - Karst LE - Levee NM - No Modifications OC - Overflow Channel or Flume DM - Dam at outlet or HU boundary GC - General Canal/Ditch PS - Pumping Station DD - Drainage Ditch SI - Siphon AD - Aqueduct RS - Reservoir TF - Transportation Feature (road, railroad, docks etc.) GF - Ground-Water Flow MA - Mining Activity UA - Urban Area GL - Glacier IF - Ice Field OF - Overbank Flow OT - Other Attribute_Label: HU_12_TYPE Attribute_Definition: Sixth Level Hydrologic Unit type. Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: S,C,F,M,W,I,U Enumerated_Domain_Value_Definition: One character: S - Standard hydrologic unit - Any land HU with drainage flowing to a single outlet point, excluding non-contributing areas. C - Closed Basin - A drainage area 100% non-contributing. All surface flow is internal, no overland flow leaves the HU through the outlet point. F - Frontal hydrologic unit - Areas along the coastline of lakes, oceans, bays, etc. that have more than one outlet. M - “Multiple Outlet” hydrologic unit An area that has more than one natural outlet; for example, an outlet located on a stream with multiple channels. This does not include frontal or water hydrologic units, hydrologic units with artificial interbasin transfers, drainage outlets through karst or ground-water flow, or outlets that cross a stream with an island. This code should be used only in rare instances. W - Water hydrologic unit - HU that are predominantly water with adjacent land areas, ex. lake, estuaries, harbors. I - Island hydrologic unit - A HU that is one or more islands and adjacent water out to the toe of the shore face. Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Detailed_Description: Entity_Type: Entity_Type_Label: PR_HU12SP.AAT Entity_Type_Definition: Arc Attribute Table Entity_Type_Definition_Source: ESRI, Arc/Info Software Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal number of beginning node of arc Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1-1033 Enumerated_Domain_Value_Definition: Integer Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal number of ending node of arc Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1-1033 Enumerated_Domain_Value_Definition: Integer Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal number of polygon to left of arc Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1-255 Enumerated_Domain_Value_Definition: Integer Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal number of polygon to right of arc Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1-255 Enumerated_Domain_Value_Definition: Integer number Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 0.098 - 20536.178 Enumerated_Domain_Value_Definition: Numeric Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: PR_HU12SP# Attribute_Definition: Internal feature number Attribute_Definition_Source: computed Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1 - 1268 Enumerated_Domain_Value_Definition: Integer number Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: PR_HU12SP-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: user-defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1-24202 Enumerated_Domain_Value_Definition: Integer number Enumerated_Domain_Value_Definition_Source: ESRI Attribute: Attribute_Label: HU_LEVEL Attribute_Definition: Code indicating highest level of HUC boundary represented by line Attribute_Definition_Source: U.S. Geological Survey, 1974; U.S. Department of Agriculture, Soil Conservation Service, 1991; Federal Information Processing Standard; Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 1-6 Enumerated_Domain_Value_Definition: Level Digit Name 1 2 Region 2 4 Subregion 3 6 Basin 4 8 Subbsin 5 10 Watershed 6 12 Subwatershed Enumerated_Domain_Value_Definition_Source: Amendments and Updated Information to the Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: Linesource Attribute_Definition: Base map source used to delineate at 1:20,000 scale Attribute_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: TOPO20, DRG20, DEM10, DEM30, NED30, EDNA30, BATH"scale", HYPSO"scale", ORTHO"scale", DEDEM10, DEDEM30, GPS, LIDAR, IFSAR, OTH, UNK Enumerated_Domain_Value_Definition: TOPO20 - Delineation from hardcopy topographic maps (1:20,000 Puerto Rico) DRG20 - Delineation from 1:20,000 Digital Raster Graphics DEM10 - Derived from 10 meter Digital Elevation Model DEM30 - Derived from 30 meter Digital Elevation Model NED30 - Derived from 30 meter National Elevation Dataset Model EDNA30 - (formally NED-H), derived from 30 meter National Elevation Dataset Derivatives BATH"scale" (ex. BATH24) - Interpreted from NOAA bathymetric data HYPSO"scale" (ex. HYPSO24)- Delineated from contour data ORTHO"scale" (ex. ORTHO12) - Interpreted from Ortho-imagery DEDEM10 - Drainage enforced 10 meter Digital Elevation Model DEDEM30 - Drainage enforced 30 meter Digital Elevation Model GPS - Derived from Global Positioning System LIDAR - Derived from LIDAR IFSAR - Derived from IFSAR data OTH - Other UNK - Unknown Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Attribute: Attribute_Label: META_ID Attribute_Definition: Code that identifies which metadata file applies to the arc Attribute_Definition_Source: Assigned Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: PR01 Enumerated_Domain_Value_Definition: alphanumeric Enumerated_Domain_Value_Definition_Source: Federal Standards for delineation of hydrologic unit boundaries- June 12, 2001 DRAFT Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Department of Agriculture, Natural Resources Conservation Service, National Cartography and Geospatial Center Contact_Address: Address_Type: mailing address Address: P.O. Box 6567 City: Fort Worth State_or_Province: Texas Postal_Code: 76115 Contact_Voice_Telephone: 817 334 5559 Contact_Facsimile_Telephone: 817 334 3486 Contact_Electronic_Mail_Address: ftw.nrcs.usds.gov Resource_Description: 12-digit HU Boundary for Puerto Rico Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the agency regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. The U. S. Department of Agriculture will warrant the delivery of this product in computer readable format, and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition. The U.S. Department of Agriculture, nor any of its agencies, nor the U. S. Geological Survey are liable for the misuse of the data, for Nor is it liable for damage, transmission of viruses, or computer damage, transmission of viruses, or computer contamination through the distribution of these data sets. The U.S. Department of Agriculture (USDA) prohibits discrimination in its programs on the basis of race, color, national origin, sex, religion, age, disability, political beliefs and marital or familial status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audio tape, etc.) should contact the USDA Office of Communications at (202) 720-5881 (voice) or (202) 720-7808(TDD). Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARC/INFO export file Format_Information_Content: spatial and attribute Transfer_Size: 873 kb Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Level 1 Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://www.ftw.nrcs.usda.gov/nsdi_node.html Access_Instructions: Local area network Fees: There is an administrative charge of $50 for a CD-ROM that contains a state data set. Ordering_Instructions: Call or write to organizations listed under Distributor. Spatial line data and locations of special feature symbols are in DLG-3 optional format and ARC/INFO coverage and export formats. Digital line graph files contain major and minor code pairs in area and line records. A conversion legend is provided for each digital line graph file. Metadata_Reference_Information: Metadata_Date: 20011120 Metadata_Review_Date: 19950417 Metadata_Future_Review_Date: 2001 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: GIS Specialist Contact_Address: Address_Type: mailing address Address: GSA Center 651 Federal Drive 400-15 City: Guaynabo State_or_Province: Puerto Rico Postal_Code: 00965 Contact_Voice_Telephone: 787-749-4346 Contact_Facsimile_Telephone: 787-749-4462 Metadata_Standard_Name: Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none