Identification_Information:
Citation:
Citation_Information:
Originator: IIHR-Hydroscience
& Engineering
Publication_Date: March/2010
Title:
Iowa River at Iowa City, IA (IOWI4) - Flood Inundation Depth Rasters
elev_634_2, elev_634_7, elev_635_2, elev_635_7, elev_636_2,
elev_636_7, elev_637_2, elev_637_7, elev_638_2, elev_638_7, elev_639_2,
elev_639_7, elev_640_2, elev_640_7, elev_641_2, elev_641_7, elev_642_2,
elev_642_7, elev_643_2, elev_643_7, elev_644_2, elev_644_7, elev_645_2,
elev_645_7, elev_646_2, elev_646_7, elev_647_2, elev_647_7, elev_648_2,
elev_648_7, elev_649_2, elev_649_7, elev_650_2, elev_650_7, elev_651_2
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage: www.iihr.uiowa.edu
Description:
Abstract:
These raster datasets show inundation depths (feet) along
the Iowa River in Iowa City, IA. This information is to be displayed on the
National Weather Service's (NWS's) Advanced Hydrologic Prediction Service
(AHPS) website.
Purpose:
This data set was developed exclusively for use with the
National Weather Service's (NWS) Advanced Hydrologic Prediction Service (AHPS)
website.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: March/2010
Time_of_Day: unknown
Currentness_Reference: ground condition
Status:
Progress: Complete.
Maintenance_and_Update_Frequency:
IIHR-Hydroscience
& Engineering/City of Iowa City have not determined a maintenance and
update schedule for this dataset.
Spatial_Domain: NAD_1983_UTM_Zone_15N
Bounding_Coordinates:
West_Bounding_Coordinate: 618448.995854 meters
East_Bounding_Coordinate: 622602.803472 meters
North_Bounding_Coordinate: 4615449.225969 meters
South_Bounding_Coordinate: 4608976.742899 meters
Keywords:
Theme:
Theme_Keyword_Thesaurus:
floods, Iowa River, Coralville,
flood inundation mapping, hydrologic prediction, hydraulics
Theme_Keyword: None named.
Access_Constraints: Free from restriction on use
and distribution.
Use_Constraints:
Users must assume
responsibility to determine the appropriate use of this data. Users should be
aware of the limitations of this dataset if using for critical application.
Native_Data_Set_Environment:
Microsoft Windows Vista
Enterprise Service Pack 2; ESRI ArcMap Build 1770
Attribute_Accuracy:
Attribute_Accuracy_Report: The attributes in this
dataset are believed to be accurate.
Logical_Consistency_Report:
These data are believed to be
logically consistent, although not tested. Geometry appears topologically
clean.
Completeness_Report:
Spatial and attribute properties are believed to be
complete, although attribute information has been simplified. Geometric
thresholds from original data are preserved. No tests have been completed for
exhaustiveness.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
As with any engineering analysis of this type, variation
from the estimated flood heights and floodplain boundaries is possible. One
dimensional Hydraulic modeling lacks the ability to account for flow velocities
over the flood plain, which may result in variation of inundation. Details of the process used to produce this
data can be found in project documentation available from the data contact
person. Topographic data was provided by the United States Geological Survey
(USGS) and the cities of Iowa City and Coralville. Ayres Associates collected and integrated
topographic and aerial photogrammetric data.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
As with any engineering
analysis of this type, variation from the estimated flood heights and
floodplain boundaries is possible. Details of the process used to produce this
data can be found in project documentation available from the data contact
person. Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Title:
Flood Inundation Depth Rasters elev_634_2, elev_634_7,
elev_635_2, elev_635_7, elev_636_2, elev_636_7, elev_637_2, elev_637_7,
elev_638_2, elev_638_7, elev_639_2, elev_639_7, elev_640_2, elev_640_7,
elev_641_2, elev_641_7, elev_642_2, elev_642_7, elev_643_2, elev_643_7,
elev_644_2, elev_644_7, elev_645_2, elev_645_7, elev_646_2, elev_646_7,
elev_647_2, elev_647_7, elev_648_2, elev_648_7, elev_649_2, elev_649_7,
elev_650_2, elev_650_7, elev_651_20
Larger_Work_Citation:
Citation_Information:
Originator: IIHR-Hydroscience
& Engineering
Title:
Flood Inundation Depth Rasters elev_634_2, elev_634_7,
elev_635_2, elev_635_7, elev_636_2, elev_636_7, elev_637_2, elev_637_7,
elev_638_2, elev_638_7, elev_639_2, elev_639_7, elev_640_2, elev_640_7,
elev_641_2, elev_641_7, elev_642_2, elev_642_7, elev_643_2, elev_643_7,
elev_644_2, elev_644_7, elev_645_2, elev_645_7, elev_646_2, elev_646_7,
elev_647_2, elev_647_7, elev_648_2, elev_648_7, elev_649_2, elev_649_7,
elev_650_2, elev_650_7, elev_651_2
Online_Linkage: <www.iihr.uiowa.edu>
Source_Scale_Denominator: IIHR-Hydroscience
& Engineering
Type_of_Source_Media:
Source_Contribution:
Topographic data was provided by the United States
Geological Survey (USGS) and the cities of Iowa City and Coralville. Ayres Associates collected and integrated
topographic and aerial photogrammetric data.
IIHR-Hydroscience & Engineering gathered
bathymetric data using single and multibeam
sonar. Ayres Associates developed a
validated one-dimensional Hec-Ras model used in
generation of these data.
Process_Description:
IIHR-Hydroscience &
Engineering used the Hec-Ras Model developed by Ayres
Associates to generate several steady state simulations. Each simulation was based on a discharge as
determined by 0.5 foot river stage intervals of the rating curve at USGS River
gage 05454500 Iowa River at Iowa City, IA. The water surfaces were exported as TIN
layers to ArcMap using Hec-GeoRas. These TINs were intersected with a DEM of the
area. Areas of positive inundation depth
(1 meter grid spatial resolution) were converted to vector format. The 1 meter inundation depth grids were then
converted to 5 meter grids to allow posting of the inundation depth datasets on
the AHPS website. The depth units are
given in feet.
Process_Date: 20090420
Process_Time: 09514700
Source_Produced_Citation_Abbreviation: <www.iihr.uiowa.edu>
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 1294
Column_Count: 831
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -93.000000
Latitude_of_Projection_Origin: 00.000000
False_Easting: 500000.000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 5.000000
Ordinate_Resolution: 5.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS_1980
Semi-major_Axis: 6378137.000000000000000000
Denominator_of_Flattening_Ratio: 298.257222101000020000
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Metadata_Reference_Information:
Metadata_Date: 20100308
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: IIHR-Hydroscience
& Engineering
Contact_Person: Dr. Nathan Young
Contact_Address:
Address_Type: mailing and physical address
Address: IIHR-Hydroscience
& Engineering
The
University of Iowa
100
C. Maxwell Stanley Hydraulics Laboratory
City: Iowa City
State_or_Province: Iowa
Postal_Code: 52242-1585
Country: USA
Contact_Voice_Telephone: (319) 335-5237
Metadata_Standard_Name: FGDC Content Standards for
Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
version 1.0 on Mon March 3, 14:33:48
2010