National Hydrography Dataset (NHD) - High-resolution: flowline features

U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, USDA Forest Service, and other Federal, State and local partners (see dataset specific metadata under Data_Set_Credit for details). See dataset specific metadata. Unknown National Hydrography Dataset (NHD) - High-resolution: flowline features vector digital data Reston, Virginia U.S. Geological Survey http://nhd.usgs.gov nhdflowline-hr_pa The NHD flowline dataset contains routes that make up a linear surface water drainage network. This NHD flowline dataset was compiled for Pennsylvania from subregions 0204, 0205, 0206, 0207, 0412, 0413, 0501, 0502, and 0503. Subregion datasets were extracted as shapefiles from geodatabase in ArcCatalog, and merged in Arcview 3.3. See shapefile dataset 'nhd_status_10-12-04' for status. 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. 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 waterbodies 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. 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, land use 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. en 2001 2004 See dataset specific metadata. In work Irregular -82.820095 -74.029870 43.376567 37.843238 -82.820095 -74.029870 37.843238 43.376567 0.000000 0.000000 U.S. Department of the Interior, U.S. Geological Survey, 1999, Standards for National Hydrography Dataset (http://mapping.usgs.gov/standards/) FWHYDROGRAPHY Hydrography Stream / River Lake / Pond Canal / Ditch Reservoir Spring / Seep Swamp / Marsh Artificial Path Reach Code 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. US None None. Acknowledgment of the originating agencies would be appreciated in products derived from these data. Earth Science Information Center, U.S. Geological Survey mailing address

507 National Center

Reston VA 20192 USA 1 888 ASK USGS 1 888 275 8747 ask@usgs.gov 0800-1600 Eastern Time In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL: http://mapping.usgs.gov/esic/esic_index.html See dataset specific metadata. ESRI ArcCatalog 8.3.0.800 Shapefile Statements of attribute accuracy are based on accuracy statements made for U.S. Geological Survey Digital Line Graph (DLG) data, which is estimated to be 98.5 percent. One or more of the following methods were used to test attribute accuracy: manual comparison of the source with hardcopy plots; symbolized display of the DLG on an interactive computer graphic system; selected attributes that could not be visually verified on plots or on screen were interactively queried and verified on screen. In addition, software validated feature types and characteristics against a master set of types and characteristics, checked that combinations of types and characteristics were valid, and that types and characteristics were valid for the delineation of the feature. Feature types, characteristics, and other attributes conform to the Standards for National Hydrography Dataset (USGS, 1999) as of the date they were loaded into the database. All names were validated against a current extract from the Geographic Names Information System (GNIS). The entry and identifier for the names match those in the GNIS. The association of each name to reaches has been interactively checked, however, operator error could in some cases apply a name to a wrong reach. 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. 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. 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. 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. 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. 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. Unknown 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. 2004 See dataset specific metadata. Metadata imported. withheld 20051006 13103000 Metadata imported. withheld 20051006 14452800 Vector Simple FALSE 0 TRUE TRUE North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 National Geodetic Vertical Datum of 1929 0.000001 meters Explicit elevation coordinate included with horizontal coordinates NWT_NHD_Flowline Feature Class 0 Resolution OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. GNIS_ID GNIS_ID String 10 0 0 Feature geometry. ESRI Coordinates defining the features. COMID REACHCODE String 14 0 0 GNIS_Name Geometry 0 Shape 0 0 Feature geometry. Esri Coordinates defining the features. ReachCode String 65 GNIS_NAME 0 0 Shape Feature geometry. ESRI Coordinates defining the features. Integer 4 FTYPE 0 0 GNIS_NAME FCODE Integer 4 0 0 LENGTHKM COMID Integer 4 0 0 FType Date 8 FDATE 0 0 FCode Integer 4 RESOLUTION 0 0 WBAREACOMI SHAPE_LENG Double 8 0 0 FTYPE LENGTHKM Double 8 0 0 FCODE FLOWDIR Integer 4 0 0 SHAPE_LENG WBAREACOMI Integer 4 0 0 ComID SmallInteger 2 ENABLED 0 0 FDate String 16 SOURCETHM 0 0 SHAPE_LENG Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. LENGTHKM LENGTHKM Double 19 18 11 FLOWDIR FLOWDIR Integer 9 9 0 WBAREACOMI WBAREACOMI Integer 9 9 0 ENABLED ENABLED SmallInteger 4 4 0 SOURCETHM SOURCETHM String 16 0 0 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/. 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. Earth Science Information Center, U.S. Geological Survey mailing address

507 National Center

Reston VA 20192 USA 1 888 ASK USGS 1 888 275 8747 nhd@usgs.gov 0800-1600 Eastern Time In addition to the address above there are other ESIC offices throughout the country. A full list of these offices is at URL: http://mapping.usgs.gov/esic/esic_index.html FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile en 20051006 14452800 FALSE 20200203 15501800 20200203 15501800 {E50F7063-6CAC-45FF-8478-FB2003C0A073} NWT_NHD_Flowline 002 Projected GCS_North_American_1983 Linear Unit: Foot_US (0.304801) NAD_1983_StatePlane_Pennsylvania_South_FIPS_3702_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/2.4.0'><WKT>PROJCS["NAD_1983_StatePlane_Pennsylvania_South_FIPS_3702_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1968500.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-77.75],PARAMETER["Standard_Parallel_1",39.93333333333333],PARAMETER["Standard_Parallel_2",40.96666666666667],PARAMETER["Latitude_Of_Origin",39.33333333333334],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2272]]</WKT><XOrigin>-119214200</XOrigin><YOrigin>-96198500</YOrigin><XYScale>3048.0060960121928</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-1023.7418235</MOrigin><MScale>10000</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102729</WKID><LatestWKID>2272</LatestWKID></ProjectedCoordinateSystem> Esri ArcGIS 12.4.2.19948 NWT_NHD_Flowline -82.820095 -74.02987 43.376567 37.843238 1 -82.820095 -74.02987 43.376567 37.843238 1 This layer is from the National Hydrography Dataset showing the flowline of streams and rivers within North Whitehall Township. Stream Flowline NWT National Hydrography Dataset Flowline showing streams and rivers. PASDA NHD Flowline ISO 19115 Geographic Information - Metadata DIS_ESRI1.0 dataset 002 withheld Local Area Network 796.602 Shapefile File Geodatabase Feature Class GCS_North_American_1983 EPSG 6.12(9.0.0) 0 20200203 Pennsylvania Spatial Data Access mailing and physical address

115 Land and Water Building, Penn State University

University Park PA 16802 USA pasda@psu.edu /9j/4AAQSkZJRgABAQEAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRofHh0a HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy MjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjIyMjL/wAARCADIASwDASIA AhEBAxEB/8QAHwAAAQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQA AAF9AQIDAAQRBRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3 ODk6Q0RFRkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWm p6ipqrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/8QAHwEA AwEBAQEBAQEBAQAAAAAAAAECAwQFBgcICQoL/8QAtREAAgECBAQDBAcFBAQAAQJ3AAECAxEEBSEx BhJBUQdhcRMiMoEIFEKRobHBCSMzUvAVYnLRChYkNOEl8RcYGRomJygpKjU2Nzg5OkNERUZHSElK U1RVVldYWVpjZGVmZ2hpanN0dXZ3eHl6goOEhYaHiImKkpOUlZaXmJmaoqOkpaanqKmqsrO0tba3 uLm6wsPExcbHyMnK0tPU1dbX2Nna4uPk5ebn6Onq8vP09fb3+Pn6/9oADAMBAAIRAxEAPwD3+iii gAooooAKKKKACiiigAooooAKKKKACiiigAqNiS4UHBHJ+lSUxhghgORx9RQgYoAHPf1NDHapPpTX YFCRz2H1qSgCEzRMmRIuPXNCMZhkqVXsD3qTYu7dgbumcc06nddAECgdAKanIJ9TT6QDAwKQC0Ux mO4KBye/pRtz945/lQANIqgnOcenNGC3UYH16049DSL9wfSgQYGMYGKRc8rnOO9OOccdaAMDFAxa QnA6E/SlooAbvHfI/CkJyCAM/XpT6KAGIcoMnJHB+tPqux8qcNn5ZOD7GrFNiQUUUUhhRRRQAUUU UAFFFFABRRRQAUUUUAFFFFABRRRQAUUUnQUAIVz3IPqKQbl68j170qcIv0p1AiFuquPmB7Dv6GpR nHOM+1RuCBlcdQSKlpsAoopD04pDFqJWMhJAwvY+tJ5YkHz/ADYJ47VKBgYFPQBhUAKQMYNSUhGR g0vakAhG4EHoaWiigApD09KRgSpA64oHzL3FACZI4b86fUQky+zGSOpHSlUPtG4gfTmnYRJmopi2 wbQ2c/wkA/rT9i/3R+VNUDeW9Dgc0IBkSsynzQCx9u1SDJOCen604DDE+tLQ2FgooopDCiiigAoo ooAKKKKACiiigAooooAKKKKACim7vnxjjGc06gBg+831/pQ3zHb2701wdysuM5wfpUgAUUxC0UUU hkTFtpBBJ7EVIp3KD60tMHDEduv0oAfRUYO8g/wjp71JQAgGM/WloooAKQnAzS0hOO2aADIYccim mMEEZb86MBuV6+opBIMlT94dh3piFUkcN26H1qNlZ24cqncDqfx7U/Zu5cAnOQPSpKLgNVQigKMC nUUUhhRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFITgZNBGRg9KjX5uvRSRzQA9QeSe pp1FITge/agCMt+86E4HYU/cf7pFAGMnOSadTAKKKKQBULKTIfQr36flU1MP3wfYihCYbcjlif0p wAHSml+cAEn2pwJ7jH40DFpGOBnrS0x+n4j+dAD6KKKAIyu/nke44Jp4UKMAUtFABRRRQAUUUUAF FFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAhGR1wajJKvk8g8YHrUtQvuE8Z6qcgj0poT H4ZuvH0NHlr1IyfUmlLDOByfQUDd3AH0NADdrZxuyv607YvoKdRSuOwU0hieuBTqKAGZYDlfyNNf LqdqnI6ZOKlopisNXG0YGBTqYhygPrT6Qxg/1h+gpzDIIprcHd270+gBFOVBpaan3adQAUUUUAFF NY4wB1NJsB+9z/KgB9NByxPboKNi/wB0flTqBBRRRQMKKKKACiiigAooooAKKKKACiiigAooooAK KKKACoZVLPHjjDdR9DU1IQCMGhOwMbkL8oGT6U4Zxz1qMFUQKOvYZ5PNSDOOetAIblixAwAO9Gz3 b86E+79eacTyAKYhhDgjByO/rUlFFIYUUUUAMPynI6HrTgQRkHNLTMEEkDIPagB9MHynHY9KcDkZ FBAIwaAGj5TjsTxT6jKdCGOR0yc0u/Bw3Hv2NMQ+iimHJOAceppDD/lp1zgc+1PpAABgCloAKKKQ kAZNAC0UUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQBCkCo4Yds9fc5qaio9xYYUf iaerAbtUJuxz976U8ffP4UOPk29jgUDlmP4UCHEZGP1phJ4B4OfzqSo2GZEOOmaSGSUUZ5xRQAUU Uh6cHFACJ9wU6q0YdXJAJUk5HGPqKmy3ZfzNNrUSH0U0Nn6+lOpDGbF+n04pAArnHcc1JTBwxHrz QIfRRRQMKY4yvHUc0+igBAQRkUtMK9wcGlBz1GD6UAOooooAKKKKACiiigAooooAKKKKACiiigAo oooAKKKKACmJ9388USLvjZR1Ix1xTYUKRhSAMdACT/On0EE+PLGRkblz+YqQAAYFQ3AJgfaMsBkD 3HNSfOR94flR0AVTnPpnikJO4469BTgMAAdqjC/vSe2Bj/P4CgZIBgYpaQnFLSAKQ5I4OKWigBAA BgdKWiigBCoPUU0DDEDpin0xs8MBkjt60AOJwMmmrySe3ak2sR8zfgKkpgFFFFIAooooAKTAznAz 60tFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABTACvA5X9RSSOIwGJAXPNLk twAQPWmIcDkZFNP3gfwp9RswQ7mIAPGTSGPIyMUiknIPUUu4eopP+Wn1FAh1FFFAxpOMZ9cU6kIy MUAnoetAC0UUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUU UAFFFFADf+Wn0FOphB+8vX3pAzEkYAA75zTESUxVBAJ5PvRsHf5j70+kMbtX0FNU7tvsMn605iFU k9BzSRqERVAAwMYFAh9FFFAwprDoR1FOooAQHIyKWkwMk+tLQAUUUUAFFFFABRRRQAUUUUAFFFFA BRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAM+Zunyj1704AAYFLRQAhOBmgEEZBzS00r zkcGgB1MUgMUzyOR9KiZnd9ijaP4mz+gp6wRqSVUA+oHP50xbktFIOnNLSGFFFFABRRRQAUUUUAF FFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFADWbapOM+ w71CJi7+XsKnHcj+hqcjp7UbQDkAZo0AQLjryc5p1FFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFA BRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAF FFFABRRRQAUUUUAFFFFABRRRQAUUUUAFFFFABRRRQAUUUUAf/9k=