Base Flood Elevations of the Winooski River in Waterbury, Vermont, 2014

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Scott Olson, U.S. Geological Survey
Publication_Date: 20150228
Title:
Base Flood Elevations of the Winooski River in Waterbury, Vermont, 2014
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Scientific Investigations Report
Issue_Identification: 2015-5077
Other_Citation_Details:
Additional details regarding the shapefile and its development can be found in Olson, S.A., 2015, Flood maps for the Winooski River in Waterbury, Vermont, 2014: U.S. Geological Survey Scientific Investigations Report 2015-5077, xx p.
Larger_Work_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 20150331
Title: Flood maps for the Winooski River in Waterbury, Vermont, 2014
Series_Information:
Series_Name: U.S. Geological Survey Scientific Investigations Report
Issue_Identification: 2015-5077
Description:
Abstract:
Digital shapefile of the lines depicting elevation in the North American Vertical Datum of 1988 of flooding for the White River and the Tweed River corresponding to the 1-percent annual exceedance probability (AEP) flood (also referred to as the 100-year flood) was created by the U.S. Geological Survey (USGS) in cooperation with the Federal Emergency Management Agency (FEMA) for a 8.3-mile reach of the Winooski River from about 1,000 feet downstream of the Waterbury-Bolton town line upstream to about 2,000 feet upstream of the Waterbury-Middlesex town line.
Purpose:
The base-flood elevations depict estimates of the elevation of flooding for the Winooski River corresponding to the 1-percent annual exceedance probability flood.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20141204
Currentness_Reference: Generated in 2014
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -72.828470
East_Bounding_Coordinate: -72.710398
North_Bounding_Coordinate: 44.361008
South_Bounding_Coordinate: 44.311119
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Winooski River
Theme_Keyword: Base flood elevations
Theme_Keyword: 100-year flood
Theme_Keyword: 1-percent annual exceedance probability flood
Theme_Keyword: FEMA
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Waterbury
Place_Keyword: Vermont
Access_Constraints: None
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 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 using 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 July 2013. 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 boundaries shown here. Additional areas may be flooded owing 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. The USGS provides these maps as a planning tool but assumes no legal liability or responsibility resulting from the use of this information.
Data_Set_Credit:
U.S. Geological Survey, New England Water Science Center, in cooperation with the Federal Emergency Management Agency (FEMA).
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.1.1.3143

Data_Quality_Information:
Logical_Consistency_Report:
A separate review of the modeled flood extents and elevations was conducted.
Completeness_Report:
Complete for the intended 8.3-mile reach of the Winooski River in Waterbury, Vermont.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Sanborn Map Company, Inc.
Publication_Date: 20070101
Title: LiDAR Chittenden Floodplain 2007
Other_Citation_Details:
The 8-foot DEM from lidar is the dominant elevation source for development of the hydrlaulic model.
Type_of_Source_Media: None
Source_Citation_Abbreviation: LiDAR Chittenden Floodplain 2007
Source_Contribution: DEM from lidar data
Process_Step:
Process_Description:
Flood modeling done using lidar DEM, surveyed elevation data, flow data, and high-water-mark data as input to the U.S. Army Corps of Engineers' HEC-GeoRas computer program (U.S. Army Corps of Engineers, 2009). See USGS SIR 2015-5077 for more details.
Process_Date: 20140801
Process_Step:
Process_Description:
Shapefile format of flood-inundation extent was exported from HEC-GeoRas and brought into ESRI ArcGIS.
Process_Date: 20140815

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 36

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 StatePlane Vermont FIPS 4400 Feet
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9999642857142858
Longitude_of_Central_Meridian: -72.5
Latitude_of_Projection_Origin: 42.5
False_Easting: 1640416.666666667
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.0003280833333333333
Ordinate_Resolution: 0.0003280833333333333
Planar_Distance_Units: foot_us
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: BaseFloodElevations
Entity_Type_Definition:
Lines depicting the elevation of the 1-percent annual exceedance probability flood
Entity_Type_Definition_Source: Author
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: CONTOUR
Attribute_Definition:
Elevation of the water surface of the 1-percent annual exceedance probability flood in feet, North American Vertical Datum of 1988
Attribute_Definition_Source: Author
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers representing elevation.
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: unknown
City: Reston
State_or_Province: Virginia
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 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 using 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 July 2013. 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 boundaries shown here. Additional areas may be flooded owing 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. The USGS provides these maps as a planning tool but assumes no legal liability or responsibility resulting from the use of this information.

Metadata_Reference_Information:
Metadata_Date: 20150602
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Scott Olson
Contact_Address:
Address_Type: physical
Address: 331 Commerce Way
City: Pembroke
State_or_Province: New Hampshire
Postal_Code: 03275
Country: US
Contact_Voice_Telephone: 603-226-7800
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time

Generated by mp version 2.9.16 on Tue Jun 02 10:36:22 2015