Flood Boundaries for the 4-percent Annual Exceedance Probability Flood of the Winooski River in Waterbury, Vermont, 2014
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: Scott Olson, U.S. Geological Survey
- Publication_Date: 20150228
- Title:
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Flood Boundaries for the 4-percent Annual Exceedance Probability Flood of the Winooski River in Waterbury, Vermont, 2014
- Geospatial_Data_Presentation_Form: vector digital data
- Series_Information:
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- Series_Name: Scientific Investigations Report
- Issue_Identification: 2015-5077
- Other_Citation_Details:
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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:
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- Citation_Information:
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- Originator: U.S. Geological Survey
- Publication_Date: 20150331
- Title: Flood maps for the Winooski River in Waterbury, Vermont, 2014
- Series_Information:
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- Series_Name: U.S. Geological Survey Scientific Investigations Report
- Issue_Identification: 2015-5077
- Online_Linkage: <http://pubs.usgs.gov/sir/2015/5077>
- Description:
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- Abstract:
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Digital flood-boundary shapefile of the areal extent of flooding for the Winooski River corresponding to the 4-percent annual exceedance probability (AEP) flood (also referred to as the 25-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:
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The flood-boundary maps depict estimates of the areal extent of flooding for the Winooski River corresponding to the 4-percent annual exceedance probability flood. This shapefile will help to guide the general public in taking individual safety precautions and will provide city officials with a tool to efficiently manage emergency flood operations and flood mitigation efforts.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Single_Date/Time:
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- Calendar_Date: 20141204
- Currentness_Reference: Generated in 2014
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -72.829658
- East_Bounding_Coordinate: -72.709812
- North_Bounding_Coordinate: 44.361166
- South_Bounding_Coordinate: 44.311134
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: None
- Theme_Keyword: Winooski River
- Theme_Keyword: 25-year flood
- Theme_Keyword: 4-percent annual exceedance probability flood
- Theme_Keyword: FEMA
- Place:
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- Place_Keyword_Thesaurus: None
- Place_Keyword: Waterbury
- Place_Keyword: Vermont
- Access_Constraints: None
- Use_Constraints:
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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:
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U.S. Geological Survey, New England Water Science Center, in cooperation with the Federal Emergency Management Agency (FEMA).
- Native_Data_Set_Environment:
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Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143
- Data_Quality_Information:
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- Logical_Consistency_Report:
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A separate review of the modeled flood extents and elevations was conducted.
- Completeness_Report:
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Complete for the intended 8.3-mile reach of the Winooski River in Waterbury, Vermont.
- Lineage:
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- Source_Information:
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- Source_Citation:
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- Citation_Information:
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- Originator: Sanborn Map Company, Inc.
- Publication_Date: 20070101
- Title: LiDAR Chittenden Floodplain 2007
- Other_Citation_Details:
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The 8-foot DEM from lidar is the dominant elevation source for delineation of the AEP flood boundary.
- Type_of_Source_Media: None
- Source_Citation_Abbreviation: LiDAR Chittenden Floodplain 2007
- Source_Contribution: DEM from lidar data
- Process_Step:
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- Process_Description:
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Flood-inundation 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:
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- Process_Description:
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Shapefile format of flood-inundation extent was exported from HEC-GeoRas and brought into ESRI ArcGIS.
- Process_Date: 20140815
- Spatial_Data_Organization_Information:
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- Direct_Spatial_Reference_Method: Vector
- Point_and_Vector_Object_Information:
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- SDTS_Terms_Description:
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- SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
- Point_and_Vector_Object_Count: 15
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Map_Projection:
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- Map_Projection_Name: NAD 1983 StatePlane Vermont FIPS 4400 Feet
- Transverse_Mercator:
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- 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:
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- Planar_Coordinate_Encoding_Method: coordinate pair
- Coordinate_Representation:
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- Abscissa_Resolution: 0.0003280833333333333
- Ordinate_Resolution: 0.0003280833333333333
- Planar_Distance_Units: foot_us
- Geodetic_Model:
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- 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:
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- Detailed_Description:
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- Entity_Type:
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- Entity_Type_Label: flood25
- Entity_Type_Definition: 4-percent annual exceedance probability flood boundary
- Entity_Type_Definition_Source: Author
- Attribute:
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- Attribute_Label: OBJECTID
- Attribute_Definition: Internal feature number.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain:
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Sequential unique whole numbers that are automatically generated.
- Attribute:
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- Attribute_Label: Shape
- Attribute_Definition: Feature geometry.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Coordinates defining the features.
- Attribute:
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- Attribute_Label: Id
- Attribute_Definition: Internal number
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive real numbers that are automatically generated.
- Attribute:
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- Attribute_Label: area
- Attribute_Definition: Area of feature in square feet
- Attribute_Definition_Source: Author
- Attribute_Domain_Values:
-
- Unrepresentable_Domain:
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Positive real numbers that are generated by the geometry calculator.
- Attribute:
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- Attribute_Label: Shape_Length
- Attribute_Definition: Length of feature in internal units.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive real numbers that are automatically generated.
- Attribute:
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- Attribute_Label: Shape_Area
- Attribute_Definition: Area of feature in internal units squared.
- Attribute_Definition_Source: ESRI
- Attribute_Domain_Values:
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- Unrepresentable_Domain: Positive real numbers that are automatically generated.
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: U.S. Geological Survey
- Distribution_Liability:
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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:
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- Metadata_Date: 20150602
- Metadata_Contact:
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- Contact_Information:
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- Contact_Organization_Primary:
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- Contact_Organization: U.S. Geological Survey
- Contact_Person: Scott Olson
- Contact_Address:
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- 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 10:27:24 2015