ElevationDEM_DEMHE1MLCB

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: University of Vermont

Publication_Date: 20220629

Publication_Time:

Title: ElevationDEM_DEMHE1MLCB

Edition: First

Geospatial_Data_Presentation_Form: raster digital data

Series_Information:

Series_Name:

Small stream hydro enforced DEMs for the Lake Champlain Basin, 2013-2017

Issue_Identification: First Edition (2022)

Publication_Information:

Publication_Place: University of Vermont

Publisher:

Other_Citation_Details: Tile Structure - HUC8

Description:

Abstract:

The small stream hydro enforced DEMs for the Lake Champlain Basin (2013-2017) were generated from the most recent LiDAR-derived QL2 DEMs available on Vermont Open Geodata Portal. While many of the river crossings and raised structures (e.g.,bridges, roads overlaying culverts) along the main stem rivers were removed in the original hydro enforced DEM (for all years but 2017), most crossings along tributaries and smaller streams persisted. In this dataset the DEMs were manually edited to hydrologically enforce the full stream network for rivers that drain more than 2 square-miles within the Lake Champlain Basin in Vermont. This dataset enables hydrologic models to simulate flow under bridges or through culverts without the creation of artificially pooled depressions that occur behind non hydro enforced river crossings.
Funding mostly from the Lake Champlain Basin Program and the Vermont DEC--in support of the DEC’s Functioning Floodplain Initiative (FFI).

Purpose:

Small stream hydro-enforced DEMs for the Lake Champlain Basin may be used for hydrologic analyses. This dataset was developed to support creation of the Topographically-Defined Floodplains for the Lake Champlain Basin, 2013-2017.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20130000

Ending_Date: 20170000

Currentness_Reference: Ground Conditions

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -74.734688

East_Bounding_Coordinate: -71.86162

North_Bounding_Coordinate: 45.689942

South_Bounding_Coordinate: 43.105759

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: inlandWaters

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: LiDAR

Theme_Keyword: Light Detection and Ranging

Theme_Keyword: high-resolution

Theme_Keyword: topography

Theme_Keyword: DEM

Theme_Keyword: Digital elevation model

Theme_Keyword: Hydrologic

Theme_Keyword: Hydrologic Modeling

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Vermont

Place_Keyword: Lake Champlain

Temporal:

Temporal_Keyword_Thesaurus: None

Temporal_Keyword: 2022

Access_Constraints:

VCGI and the State of VT makes no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.

Use_Constraints:

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: University of Vermont

Contact_Address:

Address_Type: Mailing and Physical Address

Address: University of Vermont

City: Burlington

State_or_Province: Vermont

Postal_Code: 05405

Country: USA

Contact_Voice_Telephone:

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone:

Contact_Electronic_Mail_Address: Rebecca.Diehl@uvm.edu; Kristen.Underwood@uvm.edu

Hours_of_Service:

Data_Set_Credit:

Rebecca Diehl (UVM Faculty) and Kristen Underwood (UVM Faculty) for leading research group in development

Security_Information:

Security_Classification_System:

Security_Classification: Unclassified

Security_Handling_Description: No Security Considerations

Native_Data_Set_Environment: ESRI ArcGIS software

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Completeness_Report:

Hydro-enforcing is complete for the Vermont porition of the Lake Champlain Basin for streams that drainge more than 2 square-miles. The Lake Champlain Basin was defined according to the HUC12 boundaries obtained from VCGI.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Vertical_Positional_Accuracy:

RMSEz in open terrain is 9.25cm for QL2. See VCGI Lidar data product web page link above for details by collection extent. Elevations of modified stream crossings were set to the average channel centerline elevations upstream and downstream of the crossing.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Publication_Date: 20181219

Publication_Time:

Title:

2017 Western Vermont Quality Level 2 Lidar Hydro-Flattened Digital Elevation Model (DEMHF) data from the 3D Elevation Program (3DEP)

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place: Montpelier VT 05620-0501

Publisher: VT Center for Geographic Information

Source_Scale_Denominator:

Type_of_Source_Media:

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

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Time_of_Day:

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Source_Citation_Abbreviation:

Source_Contribution:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Publication_Date: 20170720

Publication_Time:

Title:

2014 Quad Counties Quality Level 2 Lidar Hydro Enforced Digital Elevation Model (DEMHE) data from the 3D Elevation Program (3DEP)

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place: Montpelier VT 05620-0501

Publisher: VT Center for Geographic Information

Source_Scale_Denominator:

Type_of_Source_Media:

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

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Time_of_Day:

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Source_Citation_Abbreviation:

Source_Contribution:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Publication_Date: 20170720

Publication_Time:

Title:

2013 Rutland/GI Counties Quality Level 2 Lidar Hydro Enforced Digital Elevation Model (DEMHE) data from the 3D Elevation Program (3DEP)

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place:

Publisher: U.S. Geological Survey (USGS)

Source_Scale_Denominator:

Type_of_Source_Media:

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

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Time_of_Day:

Source_Currentness_Reference:

Source_Citation_Abbreviation:

Source_Contribution:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Publication_Date: 1/3/2014

Publication_Time:

Title: VT Subwatershed Boundaries- HUC12 (WaterHydro_WBD12VT)

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place:

Publisher: National Resource Conservation Service (NRCS)

Source_Scale_Denominator:

Type_of_Source_Media:

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:

Time_of_Day:

Source_Currentness_Reference: 12/1/2018

Source_Citation_Abbreviation:

Source_Contribution:

The VT subwatershed boundaries were downloaded from the VCGI data portal. DEM's were clipped to the HUC12 boundary.

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Publication_Date: 07/23/2020

Publication_Time:

Title:

USGS National Hydrography Dataset Plus High Resolution (NHDPlus HR) for 4-digit Hydrologic Unit- (0430)

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place:

Publisher: U.S. Geological Survey (USGS)

Source_Scale_Denominator:

Type_of_Source_Media:

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:

Time_of_Day:

Source_Currentness_Reference: 10/16/2005

Source_Citation_Abbreviation:

Source_Contribution:

The NHDPlus HR dataset for the Lake Champlain 4-digut HU was downloaded from The National Map (https://www.sciencebase.gov/catalog/item/5f1b089682cef313ed8824c7) and used to define the reach extents. NHDPlusFlowlineVAA table was joined to the NHDPlusBurnLineEvent feature using the NHDplusID field, and dissolved based on ReachCode. NHDPlus reaches that had a maximum drainage area less than 5.18 square-km were excluded, as were those that fell outside the Lake Champlain Basin in Vermont.

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Publication_Date: 6/1/2021

Publication_Time:

Title: VT Road Centerline data layer (TransRoad_RDS)

Geospatial_Data_Presentation_Form: map

Publication_Information:

Publication_Place:

Publisher: Vermont Agency of Transportation (VTrans)

Source_Scale_Denominator:

Type_of_Source_Media:

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date:

Time_of_Day:

Source_Currentness_Reference: 10/24/2016

Source_Citation_Abbreviation:

Source_Contribution:

The VT Road Centerline data layer was used to identify stream crossings.

Process_Step:

Process_Description: DEMHE and DEMHF resampled to 1.0 m.

Process_Date:

Process_Step:

Process_Description:

DEMHE and DEMHF clipped to HUC-12 boundaries in the Lake Champlain Basin.

Process_Date:

Process_Step:

Process_Description:

All river crossings along the NHDplus river network for streams that drain more than 2 square miles were manually checked. If elevated bridge decks or road grades existed, DEM was edited to represent average channel geometry upsteam and downstream of crossing.

Process_Date:

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Jarlath O'Neil-Dunne

Contact_Organization: University of Vermont Spatial Analysis Lab

Contact_Position:

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference: RASTER

Direct_Spatial_Reference_Method: Raster

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point | G-polygon | Complete chain

Point_and_Vector_Object_Count:

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System

State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 4400

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999964

Longitude_of_Central_Meridian: -72.500000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.001

Ordinate_Resolution: 0.001

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137

Denominator_of_Flattening_Ratio: 1 / 298.25722210

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: raster attributes

Attribute:

Attribute_Label: Value

Attribute_Definition: Elevation in Meters

Attribute_Definition_Source:

Attribute_Domain_Values:

Unrepresentable_Domain:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: VT Center for Geographic Information

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 1 National Life Dr., Dewey Building, 2nd Floor

City: Montpelier

State_or_Province: Vermont

Postal_Code: 05620-2001

Country: USA

Contact_Voice_Telephone: (802) 585-0820

Contact_TDD/TTY_Telephone: None

Contact_Facsimile_Telephone:

Contact_Electronic_Mail_Address: vcgi@vermont.gov

Hours_of_Service:

Resource_Description: Download from web site.

Distribution_Liability:

VCGI makes no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: TIF

Format_Specification: TIFF format

Format_Information_Content: geospatial data

File_Decompression_Technique: ZIP extraction tool

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://drive.google.com/drive/folders/1CGtdxG5OH_9k7g4933HN9vyA1f75zoi8?usp=sharing

Access_Instructions:

Offline_Option:

Offline_Media:

Fees:

Custom_Order_Process:

Technical_Prerequisites: GIS Software

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20220908

Time_of_Day:

Metadata_Reference_Information:

Metadata_Date: 20220908

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: UVM

Contact_Person: Rebecca Diehl

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 94 University Place, University of Vermont

City: Burlington

State_or_Province: VT

Postal_Code: 05405

Country: USA

Contact_Voice_Telephone:

Contact_TDD/TTY_Telephone:

Contact_Facsimile_Telephone:

Metadata_Standard_Name: FGDC Content Standards for Digital Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: Local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification_System: N/A

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: No security considerations