<HTML> <HEAD> <STYLE> BODY {background-color:#FBFFFF; margin:0.25in; font-size:10pt; font-family:Arial,sans-serif} H1 {margin-left:0.05in; position:relative; top:-6; text-align:center; font-weight:bold; font-size:18; font-family:Verdana,sans-serif; color:#006400} H2 {margin-left:0.25in; position:relative; top:-16; text-align:center; font-size:13; font-family:Verdana,sans-serif; color:#006400} TABLE {position:relative; top:-10; valign:top; table-layout:fixed; border-collapse:collapse} TD {text-align:center} TD {font-weight:bold; font-size:11pt; border-color:#6495ED} .tsel {color:#FFFFFF; background-color:#6495ED} .tun {color:#00008B; background-color:#B8DEFA} .tover {color:#0000CD; background-color:#B8E6FF; cursor:hand} .f {background-color:#FFFFFF; border:'1.5pt solid #6495ED'; position:relative; top:-10} .ph1 {color:#2E8B57; font-weight:bold; cursor:} .ph2 {margin-left:0.2in; color:#2E8B57; font-weight:bold; cursor:} .pover1 {color:#006000; font-weight:bold; cursor:hand} .pover2 {margin-left:0.2in; 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if (pos > 0) { while (pos > 0) { var t = e.childNodes(0); var n = document.createElement("PRE"); var s = t.splitText(pos); e.insertAdjacentElement("afterEnd", n); n.appendChild(s); e = n; pos = e.innerText.indexOf("\n"); } var count = (par.children.length); for (var i = 0; i < count; i++) { e = par.children(i); if (e.tagName == "PRE") { pos = e.innerText.indexOf(">"); if (pos != 0) { n = document.createElement("DIV"); e.insertAdjacentElement("afterEnd", n); n.innerText = e.innerText; e.removeNode(true); } } } if (par.children.tags("PRE").length > 0) { count = (par.childNodes.length); for (i = 0; i < count; i++) { e = par.children(i); if (e.tagName == "PRE") { e.id = ""; if (i < (count-1)) { var e2 = par.children(i + 1); if (e2.tagName == "PRE") { e.insertAdjacentText("beforeEnd", e2.innerText+"\n"); e2.removeNode(true); count = count-1; i = i-1; } } } } } } else { n = document.createElement("DIV"); par.appendChild(n); n.innerText = e.innerText; e.removeNode(true); } } --></SCRIPT> </HEAD> <BODY onLoad="position();" onResize="position();" oncontextmenu="return true"> <H1>U.S. Water Bodies</H1> <H2>SDE Feature Class </H2> <TABLE cols="3" frame="void" rules="cols" width="315" height="28"> <COL WIDTH="105" /><COL WIDTH="105" /><COL WIDTH="105" /> <TR height="28" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="changeTab(this)"> <TD ID="DescTab" CLASS="tsel" TITLE="Click to see a description of the data">Description</TD> <TD ID="SpatialTab" CLASS="tun" TITLE="Click for details about the spatial data">Spatial</TD> <TD ID="AttribTab" CLASS="tun" TITLE="Click for details about the attribute data">Attributes</TD> </TR> </TABLE> <DIV ID="Group" CLASS="f"> <DIV ID="Description" CLASS="pv" STYLE="display:block"><BR /> <IMG SRC="ESRI_WATER_DETAIL0.bmp" name="thumbnail" ALIGN="absmiddle" ID="thumbnail" STYLE="height:144; border:'2 outset #FFFFFF'; position:relative" /> <BR /> <BR /> <DIV CLASS="pn">Keywords</DIV> <DIV STYLE="margin-left:0.2in" CLASS="lt2"><SPAN CLASS="pn">Theme: </SPAN> polygon, lakes, reservoirs, lagoons, hydrography, inlandWaters</DIV> <DIV STYLE="margin-left:0.2in" CLASS="lt2"><SPAN CLASS="pn">Place: </SPAN> United States</DIV> <DIV STYLE="margin-left:0.2in" CLASS="lt2"><SPAN CLASS="pn">Temporal: </SPAN> 2004</DIV> <BR /> <DIV CLASS="pn">Description</DIV> <DIV CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Abstract <DIV CLASS="pe2" STYLE="display:"> <SPAN CLASS="lt"><PRE ID="original">U.S. Water Bodies represents the major lakes, reservoirs, large rivers, lagoons, and estuaries in the United States.</PRE></SPAN><BR /> <SCRIPT>fix(original)</SCRIPT> </DIV> </DIV> <DIV CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Purpose <DIV ID="Purpose" CLASS="pe2" STYLE="display:"> <SPAN CLASS="lt"><PRE ID="original">U.S. Water Bodies provides a database of areal water features that identifies the water bodies or reaches that comprise the surface water drainage system of United States.</PRE></SPAN><BR /> <SCRIPT>fix(original)</SCRIPT> </DIV> </DIV> <DIV CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Supplementary Information <DIV CLASS="pe2" STYLE="display:"> <SPAN CLASS="lt"><PRE ID="original">Largest scale when displaying the data: 1:24,000.</PRE></SPAN><BR /> <SCRIPT>fix(original)</SCRIPT> </DIV> </DIV> <DIV STYLE="text-align:center; color:#6495ED">_________________</DIV><BR /> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Status of the data <DIV CLASS="pe2" STYLE="display:none"> Complete<BR /><I>Data update frequency: </I> Matches software update releases<BR /></DIV> </DIV> <BR /> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Time period for which the data is relevant <DIV CLASS="pe2" STYLE="display:none"> <DIV><I>Date and time: </I> 2004</DIV> <DIV> <I>Description: </I> <SPAN CLASS="lt"><PRE ID="original">publication date</PRE></SPAN><BR /> <SCRIPT>fix(original)</SCRIPT> </DIV> </DIV> </DIV> <BR /> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Publication Information <DIV CLASS="pe2" STYLE="display:none"><SPAN CLASS="lt2"> <I>Who created the data: </I>U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency, ESRI<BR /></SPAN> <DIV><I>Date and time: </I> 20050401</DIV> <DIV><I>Publisher and place: </I> ESRI, Redlands, California, USA </DIV> <DIV><I>Series name: </I>ESRI® Data &amp; Maps</DIV> <DIV><I>Series issue: </I>2005</DIV> </DIV> </DIV> <DIV STYLE="text-align:center; color:#6495ED">_________________</DIV><BR /> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Data storage and access information <DIV CLASS="pe2" STYLE="display:none"> <I>File name: </I>gis."ADS\AWALLS".ESRI_WATER_DETAIL<BR /> <I>Type of data: </I>vector digital data<BR /> <DIV><I>Location of the data: </I></DIV><DIV><LI STYLE="margin-left:0.2in">Service=sde:sqlserver:bl-geoy-gypsum\igs; Database=gis; Version=dbo.DEFAULT</LI></DIV> <I>Data processing environment: </I><SPAN CLASS="lt">Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350</SPAN><BR /> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Accessing the data <DIV CLASS="pe2" STYLE="display:none"> <I>Data format: </I>SDC<BR /> <I>Size of the data: </I>100.152 MB<BR /> <I>Data transfer size: </I>100.152 MB<BR /> <I>How to decompress the file: </I>ArcGIS® software<BR /> <I>Available media: </I>DVD ROM<BR /><I>Available media: </I>CD ROM<BR /><BR /> </DIV> </DIV> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Constraints on accessing and using the data <DIV CLASS="pe2" STYLE="display:none"> <I>Access constraints: </I> <SPAN CLASS="lt">Access granted to Licensee only.<BR /></SPAN><DIV> <I>Use constraints: </I> <SPAN CLASS="lt"><PRE ID="original">The data are provided by multiple, third party data vendors under license to ESRI for inclusion on ESRI Data &amp; Maps for use with ESRI® software. Each data vendor has its own data licensing policies and may grant varying redistribution rights to end users. Please consult the redistribution rights below for this data set provided on ESRI Data &amp; Maps. As used herein,  Geodata shall mean any digital data set consisting of geographic data coordinates and associated attributes. The redistribution rights for this data set: Redistribution rights are granted by the data vendor for hard-copy renditions or static, electronic map images (e.g. .gif, .jpeg, etc.) that are plotted, printed, or publicly displayed with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable with a Value-Added Software Application developed by ESRI Business Partners on a royalty-free basis with proper metadata and source/copyright attribution to the respective data vendor(s). Geodata is redistributable without a Value-Added Software Application (i.e., adding the sample data to an existing, [non]commercial data set for redistribution) with proper metadata and source/copyright attribution to the respective data vendor(s). The terms and conditions below apply to all the data sets provided on ESRI Data &amp; Maps. Proprietary Rights and Copyright: Licensee acknowledges that the Data and Related Materials contain proprietary and confidential property of ESRI and its licensor(s). The Data and Related Materials are owned by ESRI and its licensor(s) and are protected by United States copyright laws and applicable international copyright treaties and/or conventions. Limited Warranty and Disclaimer: ESRI warrants that the media upon which the Data and Related Materials are provided will be free from defects in materials and workmanship under normal use and service for a period of ninety (90) days from the date of receipt. THE DATA AND RELATED MATERIALS ARE EXCLUDED FROM THE LIMITED WARRANTY, AND THE LICENSEE EXPRESSLY ACKNOWLEDGES THAT THE DATA CONTAINS SOME NONCONFORMITIES, DEFECTS, OR ERRORS. ESRI DOES NOT WARRANT THAT THE DATA WILL MEET LICENSEE'S NEEDS OR EXPECTATIONS; THAT THE USE OF THE DATA WILL BE UNINTERRUPTED; OR THAT ALL NONCONFORMITIES, DEFECTS, OR ERRORS CAN OR WILL BE CORRECTED. ESRI IS NOT INVITING RELIANCE ON THIS DATA, AND THE LICENSEE SHOULD ALWAYS VERIFY ACTUAL DATA. EXCEPT FOR THE LIMITED WARRANTY SET FORTH ABOVE, THE DATA AND RELATED MATERIALS CONTAINED THEREIN ARE PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Exclusive Remedy and Limitation of Liability: The entire liability of ESRI or its licensor(s) and Licensee's exclusive remedy shall be to terminate the Agreement upon Licensee returning the Data and Related Materials to ESRI with a copy of Licensee's invoice/receipt and ESRI returning the license fees paid to Licensee. IN NO EVENT SHALL ESRI AND/OR ITS LICENSOR(S) BE LIABLE FOR COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOST PROFITS, LOST SALES, OR BUSINESS EXPENDITURES, INVESTMENTS, OR COMMITMENTS IN CONNECTION WITH ANY BUSINESS; LOSS OF ANY GOODWILL; OR FOR ANY INDIRECT, SPECIAL, INCIDENTAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT OR USE OF THE DATA AND RELATED MATERIALS, HOWEVER CAUSED, ON ANY THEORY OF LIABILITY, AND WHETHER OR NOT ESRI OR ITS LICENSOR(S) HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY EXCLUSIVE REMEDY. Third Party Beneficiary: ESRI's licensor(s) has (have) authorized ESRI to (sub)distribute and (sub)license its (their) data as incorporated into the Data and Related Materials. As an intended third party beneficiary to this Agreement, the ESRI licensor(s) is (are) entitled to directly enforce, in its own name, the rights and obligations undertaken by the Licensee and to seek all legal and equitable remedies as are afforded to ESRI. In the event that the data vendor(s) has (have) granted the end user permission to redistribute the Geodata, please use proper proprietary or copyright attribution for the various data vendor(s), and provide the associated metadata file(s) with the Geodata. In compliance with FGDC metadata standards, ESRI has attempted to practice proper metadata methodologies by providing any data source information, descriptions, and file names to assist in this effort.</PRE></SPAN><BR /> <SCRIPT>fix(original)</SCRIPT> </DIV> </DIV> </DIV> </DIV> </DIV> <BR /> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Details about this document <DIV CLASS="pe2" STYLE="display:none"> Contents last updated: 20070829 at time 21441800 <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Who completed this document <DIV CLASS="pe2" STYLE="display:none"> Data Team<BR />ESRI<BR /><I>mailing and physical address:</I><BR /><DIV STYLE="margin-left:0.3in"> <DIV CLASS="lt"> <PRE ID="original">380 New York Street</PRE> <SCRIPT>fix(original)</SCRIPT> </DIV> <DIV> Redlands, California 92373-8100</DIV> <DIV>USA</DIV></DIV> <BR /> 909-793-2853 (voice)<BR />909-793-5953 (fax)<BR />info@esri.com<BR /><BR /> <DIV><I>Hours of service:</I> 8:00 a.m. 5:30 p.m. Pacific time, Monday Friday</DIV><BR /> </DIV> </DIV> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Standards used to create this document <DIV CLASS="pe2" STYLE="display:none"> <I>Standard name: </I>FGDC Content Standards for Digital Geospatial Metadata<BR /> <I>Standard version: </I>FGDC-STD-001-1998<BR /> <I>Time convention used in this document: </I>local time<BR /> Metadata profiles defining additonal information<LI STYLE="margin-left:0.2in"> ESRI Metadata Profile: <A TARGET="viewer" HREF="http://www.esri.com/metadata/esriprof80.html">http://www.esri.com/metadata/esriprof80.html </A> </LI> </DIV> </DIV> </DIV> </DIV> <BR /> </DIV> <DIV ID="Spatial" class="pv" STYLE="display:none"><BR /> <DIV CLASS="pn">Horizontal coordinate system</DIV> <DIV STYLE="margin-left:0.2in"><I>Geographic coordinate system name: </I>GCS_North_American_1983</DIV> <DIV CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Details <DIV CLASS="pe2" STYLE="display:none"> <DIV CLASS="srh1">Geographic Coordinate System</DIV> <DIV CLASS="sr2"><I>Latitude Resolution: </I>0.000000</DIV> <DIV CLASS="sr2"><I>Longitude Resolution: </I>0.000000</DIV> <DIV CLASS="sr2"><I>Geographic Coordinate Units: </I>Decimal degrees</DIV> <BR /> <DIV CLASS="srh1">Geodetic Model</DIV> <DIV CLASS="sr2"><I>Horizontal Datum Name: </I>North American Datum of 1983</DIV> <DIV CLASS="sr2"><I>Ellipsoid Name: </I>Geodetic Reference System 80</DIV> <DIV CLASS="sr2"><I>Semi-major Axis: </I>6378137.000000</DIV> <DIV CLASS="sr2"><I>Denominator of Flattening Ratio: </I>298.257222</DIV> </DIV> </DIV> <BR /> <DIV CLASS="srh1">Altitude System Definition</DIV> <DIV CLASS="sr2"><I>Resolution: </I>1.000000</DIV> <DIV CLASS="sr2"><I>Encoding Method: </I>Explicit elevation coordinate included with horizontal coordinates</DIV> <DIV STYLE="text-align:center; color:#6495ED">_________________</DIV><BR /> <DIV CLASS="pn">Bounding coordinates</DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn">Horizontal</DIV> <DIV STYLE="margin-left:0.4in" CLASS="pn">In decimal degrees</DIV> <DIV STYLE="margin-left:0.6in"><I>West: </I> -160.231107</DIV> <DIV STYLE="margin-left:0.6in"><I>East: </I> -66.997867</DIV> <DIV STYLE="margin-left:0.6in"><I>North: </I> 49.384333</DIV> <DIV STYLE="margin-left:0.6in"><I>South: </I> 19.203998</DIV> <DIV STYLE="margin-left:0.4in" CLASS="pn">In projected or local coordinates</DIV> <DIV STYLE="margin-left:0.6in"><I>Left: </I>-160.231107</DIV> <DIV STYLE="margin-left:0.6in"><I>Right: </I>-66.997867</DIV> <DIV STYLE="margin-left:0.6in"><I>Top: </I>49.384333</DIV> <DIV STYLE="margin-left:0.6in"><I>Bottom: </I>19.203998</DIV> <DIV STYLE="text-align:center; color:#6495ED">_________________</DIV><BR /> <DIV CLASS="pn">Lineage</DIV> <DIV CLASS="pn" STYLE="margin-left:0.2in">FGDC lineage</DIV> <DIV CLASS="ph2" STYLE="margin-left:0.4in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Process step 1 <DIV CLASS="pe2" STYLE="margin-left:0.2in; display:none"> <I>Process description: </I>Convert DLG [Digital Line Graph] data to features: This process converted DLG data to features and associated characteristics and converted the coordinate system to geographic (longitude-latitude) coordinates in NAD83 in five steps: 1. The USGS's [U.S. Geological Survey] "Batch DLG-3 to DLG-F Conversion System" converted DLG-3 nodes, lines, areas, and associated attribute codes to temporary features and associated characteristics. Known conditions for which conversions could not be reliably made were flagged for later inspection. Only known conversion problems were flagged, and no additional steps were taken to detect or repair discrepancies in the original DLG-3 or the converted NHD [National Hydrography Dataset]. 2. A default value of a characteristic was added in cases where the description was incomplete. 3. All instances in which data were flagged were inspected and resolved interactively. 4. Feature delineation rules were applied to the temporary features in a batch process to create the final version of features. 5. Coordinate values were converted to geographic coordinates and to the NAD83 using the NADCON software version 2.1 (National Geodetic Survey, n.d.). This process generated the "features" data. Build reaches: The basic steps for building reaches are as follows: 1. Convert RF3 [Reach File Version 3] to RF3" (RF3 double prime). This batch operation processed Reach File Version 3 to delete duplicate reaches, reassign reaches to the correct cataloging unit, validate geographic names assigned to reaches against data from the Geographic Names Information System (December 1996 extract), apply updates supplied by the States of California and Arizona, redelineate reaches on the basis of standards used for the NHD, and identify inflow/outflow points where transport reaches entered and exited waterbodies. 2. Create artificial paths. Using waterbodies from the feature data and inflow/outflow points extracted from RF3", this process automatically generated the centerlines used to delineate artificial paths within waterbodies by using subroutines within the ARC/INFO® GRID module. 3. Blind pass. This batch step conflated features and RF3" reaches and transferred reach information (reach code, reach date, name, stream level, and flow relationships) to the features. It also integrated the artificial paths generated in the previous step with the other features, built reaches on the artificial paths, and assigned geographic names (February 1995 extract) to waterbodies. 4. Quadrangle-based visual pass. During this interactive step, analysts ensured that the data developed in the previous batch processes conformed to reach delineation rules and that reaches were assigned to the appropriate cataloging unit. Batch procedures identified and developed a list of possible errors. (Errors not detected by the software may continue in the data.) Using the list, software presented each case to analysts to make appropriate edits to the data. Analysts recorded notes about repairs that could not be made and about other errors in the data. (These notes are encoded in the cataloging unit digital update units.) 5. Build superquads. After the quadrangle-based visual pass was complete, all quadrangles that cover all or part of each cataloging unit were paneled into a superquad. In this batch process, reaches that cross quad boundaries were corrected to conform to reach delineation rules. 6. Cataloging unit-based visual pass. As they did with the quadrangle-based visual pass, analysts ensured that reaches conformed to reach delineation rules. Batch procedures identified and developed a list of possible errors. (Errors not detected by the software may continue in the data.) Analysts examined each error and corrected the data. Analysts recorded notes about repairs that could not be made and about other errors in the data. (These notes are encoded in the cataloging unit digital update units.) 7. Central quality assurance/quality control. This step (1) confirmed that integrity checks were performed successfully during the visual pass activity, and (2) assessed statistics gathered during the earlier processes to determine if additional review of data was needed. A check of data from the cataloging unit-based visual pass was run in batch; any data that did not pass the procedure were reviewed interactively. If substantive changes were required, the data were reprocessed using procedures (as required) described in previous steps. The edited data then were rechecked using the central quality assurance/quality control process. 8. Data preparation and database load. This batch procedure performed final processing to the data emerging from the quality assurance/quality control step. Some of the activities included assigning the final reach codes, building waterbody reaches, adding final artificial paths in waterbodies, and implementing any recent changes in standards for the NHD. The spelling of geographic names was replaced using the March 1999 data extract from the Geographic Names Information System. After this, reaches, features, characteristics, geographic names, and relations were loaded into the database that holds the NHD. 9. Flow relation correction and validation. The flow relations were checked for consistency through a batch procedure, which generated a list of possible errors. Software presented possible errors to analysts, who corrected flow relations and, occasionally, the delineation of reaches. Changes were posted to the database. 10. Extract distribution copies of data. Data for a cataloging unit were extracted from the database and converted into an ARC/INFO® workspace containing coverages and other files. Data available in the Spatial Data Transfer Standard format were developed from the workspaces. The workspaces and the Spatial Data Transfer Standard-formatted files were made available to the public. Modified flow relationships for a subbasin. Updated stream level attributes based on flow relationships produced by the flow validation process. Stream level updates were based upon names for named reaches and the arbolate sum for unnamed reaches. Arbolate sum for any reach on the network is the sum of the lengths of all upstream reaches connected to that reach through flow relationships. Modified Names: Added names to NHD reaches by comparing them to the GNIS [Geographic Names Information System] coordinates using ArcView NHD Tools. Modified Flow Relationships using NHD ArcView Tools: Performed flow quality assurance/control and repaired flow relationships, as needed. Modified Names using NHD ArcView Tools: Added names to NHD reaches and waterbodies by comparing them to the GNIS coordinates. Replaced branched and disjoint (disconnected) reaches with linear reaches in NHDFlowline. This change occurred during the conversion to the geodatabase model. Each NHDFlowline that was part of a branched or disjoint reach was assigned to a new reach. The ComID of the NHDFlowline was unchanged. The change information from the old reach to the new reach was captured in the NHDReachCrossReference table. Each new reach has M values assigned from 0 to 100. Merged and/or split area features (NHDWaterbody, NHDArea, region.wb, region.lm) and updated associated artificial path WBAreaComID (wb_com_id) values. This change occurred during the conversion to the geodatabase model. If adjacent or overlapping area features had identical classifications, including ReachCode where applicable, the features were merged. If an area feature exceeded 100 sq. km. (25 sq. km. for canal/ditch, stream/river, or submerged stream) and crossed a subbasin boundary, the feature was split at the subbasin boundary. If any sliver polygons of a size of less than 5 sq. km. adjoined the split features, the slivers were merged back into the larger area feature. Merged or split area features were assigned a new ComID. Deleted name and GNIS Id values from NHD features where GNIS feature type is valley. This update, at the request of the GNIS staff, is to remove the possible application of a valley name (hypsographic feature) to a stream/river (hydrographic feature). In most instances, the valley name cannot be presumed to apply to the stream/river. Where the name does apply to the stream/river, the GNIS name must be updated from valley to a hydrographic feature type in order for the name to be valid in the NHD.<BR /> <I>Process software and version: </I>ARC/INFO®, ArcView® GIS 3<BR /> <I>Source produced: </I>NHD<BR /> <I>Process date: </I>1994-2004 <BR /> <BR /></DIV> </DIV> <DIV CLASS="ph2" STYLE="margin-left:0.4in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Process step 2 <DIV CLASS="pe2" STYLE="margin-left:0.2in; display:none"> <I>Process description: </I>The following steps were performed by ESRI: Downloaded the over 200 compressed files from ftp://nhdftp.usgs.gov/SubRegions/Medium/ and extracted them. Used all features from the NHDWaterbody source file of each NHD source tile. Used Canal/Ditch, Inundation Area, and Stream/River features from the NHDArea source file of each NHD source tile. Merged all NHD source tiles into a single data set. Replaced the numeric values with text strings for the attribute FTYPE. Merged and dissolved each of the Great Lakes and Great Salt Lake into single lake features and named them correctly. Added attributes SQKM and SQMI and calculated their values. Created ArcGIS® layer file (.lyr), projection file (.prj), and spatial indices.<BR /> <I>Process software and version: </I>ArcView® GIS 3, ArcGIS® 9<BR /> <I>Source used: </I>NHD<BR /> <I>Process date: </I>20050329 <BR /> <BR /></DIV> </DIV> <DIV CLASS="ph2" STYLE="margin-left:0.4in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Process step 3 <DIV CLASS="pe2" STYLE="margin-left:0.2in; display:none"> <I>Process description: </I>Dataset copied.<BR /> </DIV> </DIV> <DIV CLASS="pn" STYLE="margin-left:0.4in">Sources</DIV> <DIV CLASS="ph2" STYLE="margin-left:0.6in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Source 1: National Hydrography Dataset (NHD)<DIV CLASS="pe2" STYLE="margin-left:0.2in; display:none"> <I>Media: </I>online<BR /> <I>Scale denominator: </I>100000<BR /> <I>Contribution: </I>Attribute and geospatial data<BR /> <DIV CLASS="ph1" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Currentness of this source <DIV CLASS="pe2" STYLE="display:none"> <DIV><I>Date and time: </I> 2004</DIV> </DIV> </DIV> </DIV> </DIV> <BR /> <DIV STYLE="margin-left:0.2in" CLASS="pn">ESRI geoprocessing history</DIV> <DIV CLASS="ph2" STYLE="margin-left:0.4in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">1. Process<DIV CLASS="pe2" STYLE="display:none"> <I>Date and time:</I> 20070829 at time 214426<BR /> <I>Tool location:</I> C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CopyFeatures<BR /> <DIV CLASS="srh1">Command issued</DIV> <DIV CLASS="sr2">CopyFeatures C:\google\LAKERIM-ESRI\ESRI_WATER_DETAIL.shp "Database Connections\new_sandbox.sde\gis."ADS\AWALLS".ESRI_WATER_DETAIL" # 0 0 0</DIV> </DIV> </DIV> <DIV STYLE="text-align:center; color:#6495ED">_________________</DIV><BR /> <DIV CLASS="pn">Spatial data quality</DIV> <DIV CLASS="ph2" STYLE="margin-left:0.2in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Horizontal positional accuracy <DIV CLASS="pe2" STYLE="margin-left:0.2in; display:none"> <SPAN CLASS="lt"><PRE ID="original">The data set originally comes from several sources. Most of the data is from U.S. Geological Survey topographic quadrangle maps or sources that exceed its horizontal accuracy. 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 their true position. At 1:100,000 scale, 0.02 inch is approximately 167 feet (50.8 meters).</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> </DIV> </DIV> <DIV STYLE="text-align:center; color:#6495ED">_________________</DIV><BR /> <DIV CLASS="pn">Spatial data description</DIV> <DIV CLASS="pn" STYLE="margin-left:0.2in">Vector data information</DIV> <DIV STYLE="margin-left:0.4in" CLASS="pn">ESRI description</DIV> <DIV CLASS="ph2" STYLE="margin-left:0.6in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> gis."ADS\AWALLS".ESRI_WATER_DETAIL <DIV CLASS="pe2" STYLE="display:none"> <I>ESRI feature type: </I>Simple<BR /> <I>Geometry type: </I>Polygon<BR /> <I>Feature description: </I>U.S. Water Body<BR /> <I>Topology: </I>FALSE<BR /> <I>Feature count: </I>0<BR /> <I>Spatial Index: </I>TRUE<BR /> <I>Linear referencing: </I>FALSE<BR /> </DIV> </DIV> <BR /> <DIV CLASS="ph2" STYLE="margin-left:0.4in" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">SDTS description <DIV CLASS="pe2" STYLE="display:none"> <DIV>Feature class: SDTS feature type, feature count</DIV> <DIV STYLE="margin-left:0.2in"> <LI> gis."ADS\AWALLS".ESRI_WATER_DETAIL: G-polygon, 0 </LI> </DIV> </DIV> </DIV> <BR /> </DIV> <DIV ID="Attributes" class="pv" STYLE="display:none"><BR /> <DIV CLASS="pn">Details for gis."ADS\AWALLS".ESRI_WATER_DETAIL</DIV> <DIV STYLE="margin-left:0.2in"><I>Type of object: </I>Feature Class</DIV> <DIV STYLE="margin-left:0.2in"><I>Number of records: </I>0</DIV> <DIV STYLE="margin-left:0.2in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)">Description <DIV CLASS="pe2" STYLE="display:none"> <SPAN CLASS="lt">The polygons represent the major lakes, reservoirs, large rivers, lagoons, and estuaries in the United States.</SPAN><BR /> <SPAN CLASS="lt"><I>Source: </I>ESRI</SPAN><BR /> <BR /> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> Attributes<DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> OBJECTID_1 <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>OBJECTID_1<BR /> <I>Data type: </I>OID<BR /> <I>Width: </I>4<BR /> <I>Precision: </I>10<BR /> <I>Scale: </I>0<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">Internal feature number.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> ObjectID <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>ObjectID<BR /> <I>Data type: </I>OID<BR /> <I>Width: </I>4<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">Internal feature number.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> NAME <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>NAME<BR /> <I>Data type: </I>String<BR /> <I>Width: </I>99<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">The name of the water body.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> FTYPE <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>FTYPE<BR /> <I>Data type: </I>String<BR /> <I>Width: </I>24<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">The feature type of the water body.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> FCODE <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>FCODE<BR /> <I>Data type: </I>String<BR /> <I>Width: </I>5<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">The feature code (five-digit) for the water body. The first three digits encode the feature type; the last two digits encode values for a set of characteristics associated with the feature.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">U.S. Geological Survey in cooperation with U.S. Environmental Protection Agency</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> FCODE_DESC <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>FCODE_DESC<BR /> <I>Data type: </I>String<BR /> <I>Width: </I>130<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">The description of the feature code for the water body.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> SQKM <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>SQKM<BR /> <I>Data type: </I>Double<BR /> <I>Width: </I>0<BR /> <I>Number of decimals: </I>2<BR /> <I>Precision: </I>20<BR /> <I>Scale: </I>11<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">The area of the water body in square kilometers.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> SQMI <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>SQMI<BR /> <I>Data type: </I>Double<BR /> <I>Width: </I>8<BR /> <I>Precision: </I>11<BR /> <I>Scale: </I>2<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">The area of the water body in square miles.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> Shape <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>Shape<BR /> <I>Data type: </I>Geometry<BR /> <I>Width: </I>0<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <SPAN CLASS="lt"><I>Definition: </I><PRE ID="original">Feature geometry.</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <SPAN CLASS="lt"><I>Definition Source: </I><PRE ID="original">ESRI</PRE></SPAN> <SCRIPT>fix(original)</SCRIPT> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> Shape.area <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>Shape.area<BR /> <I>Data type: </I>Double<BR /> <I>Width: </I>0<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <BR /> </DIV> </DIV> </DIV> <DIV STYLE="margin-left:0.2in" CLASS="pn"> <DIV STYLE="margin-left:0.25in" CLASS="ph2" onMouseOver="doHilite()" onMouseOut="doHilite()" onClick="hideShowGroup(this)"> Shape.len <DIV CLASS="pe2" STYLE="display:none"> <I>Alias: </I>Shape.len<BR /> <I>Data type: </I>Double<BR /> <I>Width: </I>0<BR /> <I>Precision: </I>0<BR /> <I>Scale: </I>0<BR /> <BR /> </DIV> </DIV> </DIV> <BR /> </DIV> </DIV> </BODY> </HTML>