Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey, Indiana Water Science Center Title: goshin_05, goshin_06, goshin_07, goshin_09, goshin_10, goshin_11, goshin_12, goshin_13 Series_Information: Series_Name: SIM Issue_Identification: XXXX Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: http://water.usgs.gov/osw/flood_inundation/ Online_Linkage: http://pubs.usgs.gov/sim/XXXX Larger_Work_Citation: Citation_Information: Originator: U.S. Geological Survey, Indiana Water Science Center Title: Flood-Inundation Maps for the Elkhart River at Goshen, Indiana Publication date: 2103 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: XXXX Other_Citation_Details: Strauch, K. R., 2013, Flood-inundation maps for the Elkhart River at Goshen, Indiana: U.S. Geological Survey Scientific Investigations Map XXXX, 9 sheets, XX-p. pamphlet, http://pubs.usgs.gov/sim/XXXX/. Online_Linkage: http://pubs.usgs.gov/sim/XXXX Description: Abstract: The U.S. Geological Survey (USGS), in cooperation with the Indiana Office of Community and Rural Affairs, created digital flood-inundation maps for an 8.3-mile reach of the Elkhart River at Goshen, Indiana, extending from downstream of the Goshen Dam to downstream from County Road 17. The inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at http://water.usgs.gov/osw/flood_inundation/, depict estimates of the areal extent and depth of flooding corresponding to nine selected water levels (stages) at the USGS streamgage at Elkhart River at Goshen (station number 04100500). Current conditions for the USGS streamgages in Indiana may be obtained on the Internet at http://waterdata.usgs.gov/. In addition, stream stage data have been provided to the National Weather Service (NWS) for incorporation into their Advanced Hydrologic Prediction Service (AHPS) flood warning system (http:/water.weather.gov/ahps/). The NWS forecasts flood hydrographs at many places that are often colocated with USGS streamgages. NWS-forecasted peak-stage information may be used in conjunction with the maps developed in this study to show predicted areas of flood inundation. In this study, flood profiles were computed for the stream reach by means of a one-dimensional step-backwater model. The model was calibrated using the most current stage-discharge relation at the Elkhart River at Goshen streamgage. The hydraulic model was then used to compute nine water-surface profiles for flood stages at 1-foot (ft) intervals referenced to the streamgage datum and ranging from approximately bankfull (5 ft) to greater than the highest recorded water level (13 ft). The simulated water-surface profiles were then combined with a geographic information system (GIS) digital-elevation model (DEM), derived from Light Detection and Ranging (LiDAR) data having a 0.37-ft vertical accuracy and 3.9-ft horizontal resolution, in order to delineate the area flooded at each water level. The availability of these maps, along with Internet information regarding current stage from USGS streamgages and forecasted stream stages from the NWS, provide emergency management personnel and residents with information that is critical for flood response activities such as evacuations and road closures as well as for postflood recovery efforts. Purpose: This dataset was created to support the development of flood inundation maps for a reach of the Elkhart River in Goshen, Indiana. Supplemental_Information: A GIS application was used to produce a plane representing the flood-peak water surface. The application duplicates the water-surface-elevation data from cross-section points across the flood plain perpendicular to the direction of the flood flow. Elevations between water-surface points on the cross sections are proportional interpolations of the water-surface-elevation data and were positioned to generate a flood surface sloping with the water flow. A raster surface was created with the data points using a spline interpolation method, forming the estimated flood surface. A flood-depth grid was made by subtracting the DEM from the flood surface. The flood-peak inundation areas are available in a GIS format, polyline shapefile, that provides extent of the flood peak for each stage level. This format allows the GIS data to be overlain on maps and aerial photographs, and to be used for various GIS applications, such as FEMA's Hazards U.S. Multi-Hazards (HAZUS-MH) program (Federal Emergency Management Agency, 2010b) to estimate flood damages. For more information on data processing and checking procedures, see the full report at http://pubs.usgs.gov/sim/XXXX. 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 dataset in nonproprietary form, as well as in ArcGIS format, this metadata file may include some ArcGIS-specific terminology. Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: flooded area Theme_Keyword: high-water marks Theme_Keyword: geospatial analysis Theme_Keyword: flood Theme_Keyword: flood-inundation maps Theme_Keyword: river/stream Place: Place_Keyword_Thesaurus: Board of Geographic names Place_Keyword: Indiana Place_Keyword: Goshen Place_Keyword: United States Place_Keyword: USA Place_Keyword: Elkhart River Access_Constraints: None. This dataset is provided by USGS as a public service. Use_Constraints: Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey (USGS) as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The flood boundaries shown were estimated based on water stages/streamflows at the USGS streamflow-gaging station 04100500, Elkhart River at Goshen, Indiana, steady-state hydraulic modeling (assuming unobstructed flow), and a digital elevation model. The hydraulic model reflects the land-cover characteristics and any bridge, dam, levee, or other hydraulic structures existing in October 2012. Unique meteorological factors (timing and distribution of storm) could cause actual streamflows along the modeled reach to vary from those assumed during a flood, which may lead to deviations from the water surface elevations and inundation boundaries shown here. Additional areas may be flooded due to unanticipated backwater from major tributaries along the main stem or from localized debris- or ice-jams. Inundated areas shown should not be used for navigation, regulatory, permitting, or other legal purposes. Although USGS intends to make this server available 24 hours a day, seven days a week, timely delivery of data and products from this server through the Internet is not guaranteed. The USGS provides these maps "as-is" for a quick reference, emergency planning tool but assumes no legal liability or responsibility resulting from the use of this information. If this series of flood-inundation maps will be used in conjunction with National Weather Service (NWS) river forecasts, the user should be aware of additional uncertainties which may be inherent or factored into NWS forecast procedures. The NWS uses river forecast models to estimate the quantity and timing of water flowing through selected river reaches in the United States. These forecast models (1) estimate the amount of runoff generated by a precipitation event, (2) compute how the water will move downstream, and (3) predict the flow and stage (water surface elevation) for the river at a given location (AHPS forecast point) throughout the forecast period (every 6 hours and 3 to 5 days out in many locations). For more information on AHPS forecasts, please see: http://water.weather.gov/ahps/pcpn_and_river_forecasting.pdf. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Indiana Water Science Center Contact_Address: Address_Type: mailing and physical Address: 5957 Lakeside Blvd. City: Indianapolis State_or_Province: Indiana Postal_Code: 46278 Contact_Voice_Telephone: 317-290-3333 Security_Information: Security_Classification: Unclassified Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attributes for water-surface elevation were input from the HEC-RAS model output data table. Flow input data for the HEC-RAS model were obtained from the most current stage-discharge relation at the USGS streamgage 04100500 Elkhart River at Goshen, IN. Logical_Consistency_Report: There are no unclosed polygons or intersections without nodes. The ArcGIS geodatabase topology tools were used to make corrections using 11 rules including no gaps, no duplicate lines with the same beginning and ending nodes. Completeness_Report: This dataset is complete; there are no planned revisions or updates at this time. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Used cross-section data points from surveyed data, accurate to the datum of the survey. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Used cross-section data points from surveyed data, accurate to the datum of the survey. Vertical accuracy to the input LiDAR DEM dataset. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey, Indiana Water Science Center Title: Flood-Inundation Maps for the Elkhart River at Goshen, Indiana, 2012 Series_Information: Series_Name: Scientific Investigations Map Issue_Identification: XXXX Source_Scale_Denominator: 0 Type_of_Source_Media: None Source_Citation_Abbreviation: Flood-Inundation Maps for the Elkhart River at Goshen, Indiana, 2012 Source_Contribution: Numeric hydraulic model was used to compute water-surface profiles at selected elevations along mapped reach. The water surface profiles were then used to generate the inundation-map boundaries. Process_Step: Process_Description: A GIS application was used to produce a plane representing the flood-peak water surface. The application duplicates the high-water-mark elevation data points, or water-surface-elevation data from cross-section points of the hydraulic model across the flood plain perpendicular to the direction of the flood flow. Elevations between water-surface points on the cross sections are proportional interpolations of the water-surface-elevation data and were positioned to generate a flood surface sloping with the water flow. A raster surface was created with the data points using a spline interpolation method, forming the estimated flood surface. A flood-depth grid was made by subtracting the DEM from the flood-surface raster. Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: goshin_05, goshin_06, goshin_07, goshin_09, goshin_10, goshin_11, goshin_12, goshin_13, station ID 04100500 Entity_Type_Definition: 04100500 (station ID) flood-peak inundation area Entity_Type_Definition_Source: U.S. Geological Survey Overview_Description: Entity_and_Attribute_Overview: Each entity corresponds to an estimated flood extent area for stream stages 5 - 13 feet at the USGS streamgage 04100500, Elkhart River at Goshen, Indiana. The attributes represent the USGS station ID, USGS stage height associated with the area, and NAVD 88 elevation that correlates with the stage. Entity_and_Attribute_Detail_Citation: Strauch, Kellan R., [YEAR], Flood-inundation maps for the Elkhart River at Goshen, Indiana, 2012: U.S. Geological Survey Scientific Investigations Map XXXX, XX p. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Indiana Water Science Center Contact_Position: GIS Specialist Contact_Address: Address_Type: mailing and physical Address: 5957 Lakeside Blvd. City: Indianapolis State_or_Province: Indiana Postal_Code: 46278 Contact_Voice_Telephone: 317-290-3333 Distribution_Liability: Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey (USGS) in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. This coverage may be redistributed if it is not edited and is properly referenced. The flood boundaries shown were estimated based on water stages/streamflows at the USGS streamflow-gaging station 04100500, Elkhart River at Goshen, IN, steady-state hydraulic modeling (assuming unobstructed flow), and a digital elevation model. The hydraulic model reflects the land-cover characteristics and any bridge, dam, levee, or other hydraulic structures existing on October 2012. Unique meteorological factors (timing and distribution of storm) could cause actual streamflows along the modeled reach to vary from those assumed during a flood, which may lead to deviations from the water surface elevations and inundation boundaries shown here. Additional areas may be flooded due to unanticipated backwater from major tributaries along the main stem or from localized debris- or ice-jams. Inundated areas shown should not be used for navigation, regulatory, permitting, or other legal purposes. Although USGS intends to make this server available 24 hours a day, seven days a week, timely delivery of data and products from this server through the Internet is not guaranteed. The USGS provides these maps "as-is" for a quick reference, emergency planning tool but assumes no legal liability or responsibility resulting from the use of this information. If this series of flood inundation maps will be used in conjunction with National Weather Service (NWS) river forecasts, the user should be aware of additional uncertainties which may be inherent or factored into NWS forecast procedures. The NWS uses river forecast models to estimate the quantity and timing of water flowing through selected river reaches in the United States. These forecast models (1) estimate the amount of runoff generated by a precipitation event, (2) compute how the water will move downstream, and (3) predict the flow and stage (water surface elevation) for the river at a given location (AHPS forecast point) throughout the forecast period (every 6 hours and 3 to 5 days out in many locations). For more information on AHPS forecasts, please see: http://water.weather.gov/ahps/pcpn_and_river_forecasting.pdf. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Arc GRID file Format_Version_Number: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://water.usgs.gov/osw/flood_inundation/ Offline_Option: Offline_Media: CD-ROM Recording_Format: ISO 9660 Fees: none Ordering_Instructions: none Technical_Prerequisites: Data are supplied in ArcINFO format. Format compatibility is the user's responsibility. Metadata_Reference_Information: Metadata_Review_Date: YYYYMMDD Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Ask USGS - Water Webserver Team Contact_Address: Address_Type: mailing Address: 507 National Center City: Reston State_or_Province: Virginia Postal_Code: 20192 Country: US Contact_Voice_Telephone: 1-888-275-8747 (1-888-ASK-USGS) Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time