Tabular Input/Output Data and Model Files for a Two-dimensional Hydraulic and Sediment Transport Model of the Lower 10 Kilometers of the Snow River Near Seward, Alaska

Identification_Information:

Citation:

Citation_Information:

Originator: Beebee, Robin A. (ORCID: 0000-0002-2976-7294)
Publication_Date: 20220705
Title:

Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:

Series_Name:

GIS and Hydraulic Model data in Support of a Geomorphic and Hydraulic Assessment of Glacial Outburst Floods on the Snow River near Seward, Alaska

Issue_Identification: .

Publication_Information:

Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center

Other_Citation_Details:

Suggested Citation: Beebee, R.A., 2022, GIS and hydraulic model data in support of a geomorphic and hydraulic assessment of glacial outburst floods on the Snow River near Seward, Alaska: U.S. Geological Survey data release, https://doi.org/10.5066/P9X2YE9O

Online_Linkage: https://doi.org/10.5066/P9X2YE9O
Larger_Work_Citation:

Citation_Information:

Originator: U.S. Geological Survey, Alaska Science Center
Publication_Date: 2012
Title:

Streambed Scour Monitoring and Modeling at Bridge Crossings in Alaska

Geospatial_Data_Presentation_Form: project website
Series_Information:

Series_Name: Science Portal
Issue_Identification: 56

Publication_Information:

Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center

Other_Citation_Details:

This is a link to the broader USGS Alaska Science Center research project supported by these data. Users will find a description of the research project and links to associated reports, publications, and data products.

Online_Linkage: https://alaska.usgs.gov/portal/project.php?project_id=56

Description:

Abstract:

This dataset includes the input (raw survey data, computational mesh, hydrologic boundary conditions) and output data for a 2-dimensional hydraulic and sediment transport model of the lower Snow River flood plain near Seward, Alaska. Four outburst flood scenarios were simulated, including 3 historical floods and one hypothetical larger flood. The methods of deriving these datasets and using them to calculate scour are described in the associated USGS Scientific Investigations Report "Recent history of glacial outburst floods, analysis of channel changes, and development of a 2-dimensional flow and sediment transport model of the Snow River near Seward, Alaska".

Purpose:

The purpose of the hydraulic model and associated input and output data are to assess sediment transport, scour, flow paths, and inundation caused by outburst floods on the Lower Snow River floodplain. The computational mesh and hydrologic boundary conditions are input into the hydraulic model, which is used to derive output variables including water surface elevations, velocities, depths, and sediment transport properties of measured outburst floods and one hypothetical larger flood. These results are used to aid in mitigating damage to infrastructure in the Snow River floodplain during outburst floods.

Supplemental_Information:

Two companion datasets are included with this data package: "Historical Channel Positions and Alluvial Fan Extents for the Lower 10 Kilometers of the Snow River Flood Plain Near Seward, Alaska" and "Height above river elevations for the lower 10 kilometers of the Snow River flood plain near Seward, Alaska".

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 200711
Ending_Date: 202103

Currentness_Reference: observed

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -149.357
East_Bounding_Coordinate: -149.306
North_Bounding_Coordinate: 60.337
South_Bounding_Coordinate: 60.255

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:ASC477

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: InlandWaters
Theme_Keyword: GeoscientificInformation

Theme:

Theme_Keyword_Thesaurus: NASA GCMD Earth Science Keyword Thesaurus
Theme_Keyword: Terrestrial Hydrosphere
Theme_Keyword: Surface Water
Theme_Keyword: Floods
Theme_Keyword: Rivers/Streams
Theme_Keyword: Water Depth
Theme_Keyword: Erosion/Sedimentation
Theme_Keyword: Sediment transport

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: Hydrology
Theme_Keyword: Lidar
Theme_Keyword: River systems
Theme_Keyword: Geomorphology

Theme:

Theme_Keyword_Thesaurus: Alexandria Digital Library Feature Type Thesaurus
Theme_Keyword: Rivers
Theme_Keyword: Alluvial fans
Theme_Keyword: River channel
Theme_Keyword: River bank

Place:

Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS)
Place_Keyword: Alaska
Place_Keyword: Snow River
Place_Keyword: Kenai Lake
Place_Keyword: Kenai Peninsula Borough

Access_Constraints: None
Use_Constraints:

It is requested that the authors and the USGS Alaska Science Center be cited for any subsequent publications that reference this dataset.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey, Alaska Science Center

Contact_Address:

Address_Type: Mailing and Physical
Address: 4210 University Drive
City: Anchorage
State_or_Province: Alaska
Postal_Code: 99508
Country: USA

Contact_Voice_Telephone: 907-786-7000
Contact_Electronic_Mail_Address: ascweb@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: glacialFlood_modelData_SMS-SRH2D_snowRv_beebee_browse.jpg
Browse_Graphic_File_Description: Depth grid and velocity vectors from 2019 model output
Browse_Graphic_File_Type: JPEG

Data_Set_Credit:

The Alaska Railroad and Alaska Department of Transportation and Public Facilities contributed funding to this project. Survey data were collected by Schyler J. Knopp, Karenth L. Dworsky, and Jeff Conaway in addition to the author.

Native_Data_Set_Environment:

The dataset was created using Windows 7 and 10 operating systems and the following software: WinRiver II version 2.18, Aquaveo SMS versions 12.2 to 13.0.14, ArcMap version 10, HEC-RAS version 5.03, and Microsoft Excel 2016.

Cross_Reference:

Citation_Information:

Originator: Beebee, R.A.
Publication_Date: 2022
Title:

Recent History of Glacial Lake Outburst Floods, Analysis of Channel Changes, and Development of a Two-Dimensional Flow and Sediment Transport Model of the Snow River near Seward, Alaska

Geospatial_Data_Presentation_Form: document
Series_Information:

Series_Name: U.S. Geological Survey, Scientific Investigations Report
Issue_Identification: 2022–5099

Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey

Other_Citation_Details:

Beebee, R.A., 2022, Recent history of glacial lake outburst floods, analysis of channel changes, and development of a two-dimensional flow and sediment transport model of the Snow River near Seward, Alaska: U.S. Geological Survey Scientific Investigations Report 2022–5099, 39 p., https://doi.org/10.3133/sir20225099

Online_Linkage: https://doi.org/10.3133/sir20225099

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Survey and lidar elevation data were used as input to the computational mesh. For survey input data, accuracy was evaluated based on total station closure error, standard GPS error, or in the case of soundings, the greatest discrepancy seen in repeat measurements. From these observations, X and Y coordinates have an accuracy of 0.3 feet and Z coordinates have an accuracy of 0.1 - 0.3 feet. Accuracy is only relative to the land surface at the time of survey, and most of these points are on streambeds that move. Interpolated coordinates have unknown accuracy. For areas outside the surveyed areas two lidar datasets were used as mesh input. The upper floodplain was derived from a 2008 lidar dataset with a reported vertical accuracy of between 0.448 and 0.897 feet depending on vegetation. The middle and lower floodplains were derived from a 2018 lidar dataset with a reported accuracy of 0.07-0.16 feet. The computational mesh and solutions derived with the model software have lower resolution and therefore more uncertainty than data surveyed in the field. The interpolated mesh and interpolated survey point surface were graphically compared within SMS to identify major deviations, but no formal attempt was made to determine the accuracy of the computational mesh relative to the survey points. Model output water surface elevations were compared to measured elevations in 4 locations where pressure transducers measured the entire 2019 flood, and 1 location during the 2007 and 2017 floods. Modeled water surfaces differed from measured water surfaces by -0.2 to 0.6 feet. Any use of these results requires an understanding of the uncertainty and limitations in deriving variables with two-dimensional hydraulic modeling, and verification procedures are more fully described in the cross-referenced Scientific Investigations Report.

Logical_Consistency_Report:

Data values are consistent with no gaps. Model output points with null values, such as depth outside the flooded area, have the numerical code "-999".

Completeness_Report:

Data points were omitted that were not used for the model, such as survey points on the bridge used to tie in elevations.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Positions are reported to one tenth of a foot. Survey positions are assumed to be accurate to about 0.3 feet based on maximum backsight closure error and observations of repeat soundings along taglines, while lidar is reported to be accurate to 2.3 feet. No horizontal accuracy is claimed for interpolated points, the computation mesh or model output variables.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Aero-Metric, Inc.
Publication_Date: 2013
Title:

2008 Kenai Watershed Forum Topographic LiDAR: Kenai Peninsula, Alaska

Geospatial_Data_Presentation_Form: digital point data
Publication_Information:

Publication_Place: online
Publisher: NOAA Office for Coastal Management (NOAA/OCM)

Other_Citation_Details:

Aero-Metric, Inc. 2013. 2008 Kenai Watershed Forum Topographic LiDAR: Kenai Peninsula, Alaska. NOAA National Centers for Environmental Information https://www.fisheries.noaa.gov/inport/item/49620

Lidar dataset archived by NOAA National Centers for Environmental Information (InPort) https://www.fisheries.noaa.gov/inport [Catalog Item ID: 49620]

Online_Linkage: https://www.fisheries.noaa.gov/inport/item/49620

Type_of_Source_Media: digital database file
Source_Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 20080521

Single_Date/Time:

Calendar_Date: 20080522

Single_Date/Time:

Calendar_Date: 20080523

Single_Date/Time:

Calendar_Date: 20080605

Single_Date/Time:

Calendar_Date: 20080606

Single_Date/Time:

Calendar_Date: 20080607

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: 2008 lidar
Source_Contribution:

2008 lidar was used as the ground elevation in the upper (southern) third of the Snow River model domain and at the far west and east edges where the 2018 lidar did not cover.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Kinzel, P.J.
Originator: Legleiter, C.J.
Originator: LeWinter, A.L.
Originator: Gadomski, P.J.
Originator: Filiano, D.L.
Publication_Date: 2019
Title:

Topographic LiDAR surveys of rivers in Alaska, August 27-September 1, 2018

Geospatial_Data_Presentation_Form: GeoTFF, LAZ
Series_Information:

Series_Name: U.S. Geological Survey data release
Issue_Identification: 10.5066/P9A4YP05

Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey, ScienceBase-Catalog

Other_Citation_Details:

Kinzel, P.J., Legleiter, C.J., LeWinter, A.L., Gadomski, P.J., and Filiano, D.L. 2019, Topographic LiDAR surveys of rivers in Alaska, August 27-September 1, 2018: U.S. Geological Survey data release, https://doi.org/10.5066/P9A4YP05

Online_Linkage: https://doi.org/10.5066/P9A4YP05

Type_of_Source_Media: online database
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20180901

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: 2018 lidar
Source_Contribution:

2018 lidar was used as the ground surface elevation outside of the main channel and surveyed points for the majority of the Snow River model domain.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Beebee, R.A.
Publication_Date: 2022
Title:

Recent History of Glacial Outburst Floods, Analysis of Channel Changes, and Development of a Two-Dimensional Flow and Sediment Transport Model of the Snow River near Seward, Alaska

Geospatial_Data_Presentation_Form: document
Series_Information:

Series_Name: Scientific Investigations Report
Issue_Identification: 2021-XXXX

Publication_Information:

Publication_Place: online
Publisher: U.S. Geological Survey

Other_Citation_Details:

Beebee 2022. Recent history of glacial outburst floods, analysis of channel changes, and development of a Two-dimensional flow and sediment transport model of the Snow River near Seward, Alaska: U.S. Geological Survey, Scientific Investigations Report, 2021-XXXX

Online_Linkage: https://doi.org/10.3133/sirXXXXX

Type_of_Source_Media: publication
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2022

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Beebee 2022
Source_Contribution:

Provides details of data processing, modeling, and model parameters.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Aquaveo, Inc.
Publication_Date: 20190310
Title:

SMS: User interface and GIS for compiling input data to two-dimensional hydraulic models

Geospatial_Data_Presentation_Form: application/service
Series_Information:

Series_Name: SMS SRH-2D
Issue_Identification: 13.0.14

Publication_Information:

Publication_Place: online
Publisher: Aquaveo, Inc.

Other_Citation_Details:

The executable can be downloaded and a free community license can be used to view model results.

Online_Linkage: https://www.aquaveo.com/downloads-sms

Type_of_Source_Media: computer program
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20190310

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: SMS
Source_Contribution:

Surface-water Modeling System (SMS) v13.0.14 user interface was used to develop the computational mesh and compile the input data for the SRH-2D hydraulic and sediment transport model. An SMS executable is necessary to open and view the model files. Note that the current version of SMS (13.1, as of 10/1/2021) does not correctly calculate sediment transport. Users who wish to reproduce model results should use v13.0.14. Model developers report that version 13.2 should work when it comes out in late 2021 or 2022.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Lai, Y.G.
Publication_Date: 201602
Title: Sediment and River Hydraulics 2-Dimensional Hydraulic Model
Geospatial_Data_Presentation_Form: application/service
Series_Information:

Series_Name: SRH-2D
Issue_Identification: Version 2.2

Publication_Information:

Publication_Place: Denver, Colorado
Publisher: U.S. Bureau of Reclamation

Online_Linkage:

https://www.usbr.gov/tsc/techreferences/computer%20software/models/srh2d/index.html

Type_of_Source_Media: computer program
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 200811
Ending_Date: 201602

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: SRH-2D
Source_Contribution:

The SRH-2D model was used within SMS to calculate output hydraulic variables including water surface elevation and velocity.

Process_Step:

Process_Description:

Elevation points ("glacialFlood_rawSurvey_snowRv_beebee.csv" included with this data package) were surveyed along the upstream and downstream faces of bridges and as cross-sections upstream and downstream of the bridge. Multiple instruments (total station, GPS, ADCP, level and tagline) were used at most sites. All coordinates were adjusted to a common datum of NAVD88 and merged in a GIS. Points were interpolated between survey points using the GIS or HEC-RAS in order to create a smooth bathymetric surface.

Process_Date: 201810
Source_Produced_Citation_Abbreviation: surveyed bathymetric data

Process_Step:

Process_Description:

SMS software is used to triangulate between bathymetric and lidar input points to make a surface, then overlay a lower-resolution geometric mesh on this triangulated surface for the purposes of computing hydraulic variables. The computational mesh may include voids that replace steep or vertical surfaces. The input hydrographs and exit water surface elevations for each flood simulation are applied at the upstream and downstream ends of the mesh, respectively. SRH2D, which runs within the SMS interface, then performs hydraulic calculations with these inputs. Additional parameters are discussed in the cross-referenced USGS Scientific Investigations Report (Beebee 2022)

Source_Used_Citation_Abbreviation: 2008 lidar
Source_Used_Citation_Abbreviation: 2018 lidar
Source_Used_Citation_Abbreviation: SMS
Source_Used_Citation_Abbreviation: SRH2D
Process_Date: 202106

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:

SPCS_Zone_Identifier: 5004
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9999
Longitude_of_Central_Meridian: -150.0000
Latitude_of_Projection_Origin: 54.000
False_Easting: 1640416.66666667
False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.6096
Ordinate_Resolution: 0.6096

Planar_Distance_Units: survey feet

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983 (NAD 83)
Ellipsoid_Name: Geodetic Reference System 1980 (GRS 80)
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.25722210088

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.1
Altitude_Distance_Units: feet
Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: glacialFlood_rawSurvey_snowRv_beebee.csv
Entity_Type_Definition:

Table with X, Y, and Z coordinates and sources of raw survey data collected in lower Snow River. Presented in comma Separated Value (CSV) formatted table.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: X
Attribute_Definition: Easting (State Plane) of the survey point
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1757266.0
Range_Domain_Maximum: 1762275.4
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Y
Attribute_Definition: Northing (State Plane) of the survey point
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2292955.0
Range_Domain_Maximum: 2316131.0
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Z
Attribute_Definition: Ground elevation (feet above sea leave) of the survey point
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 426.2
Range_Domain_Maximum: 503.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Source
Attribute_Definition: Source of raw survey points
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AWR Survey
Enumerated_Domain_Value_Definition: survey points provided by Alaska Water Resources, Inc.
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Railroad Survey
Enumerated_Domain_Value_Definition: survey points provided by the Alaska Railroad
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USGS ADCP
Enumerated_Domain_Value_Definition:

Bathymetric point measured by the USGS using an acoustic doppler current profiler

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USGS Sounding
Enumerated_Domain_Value_Definition: Bathyemtric point measured from a bridge using a weighted tape
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USGS Survey
Enumerated_Domain_Value_Definition:

Topographic point surveyed by the USGS using a total station or Real-Time Kinematic GPS

Enumerated_Domain_Value_Definition_Source: Author defined

Detailed_Description:

Entity_Type:

Entity_Type_Label: glacialFlood_mesh_SMS-SRH2D_snowRv_beebee.csv
Entity_Type_Definition:

Table containing mesh element point locations. Mesh coordinates (X, Y, Z) were derived using SMS software, surveyed points (glacialFlood_rawSurvey_snowRv_beebee.csv), and publicly available lidar data (2008 lidar, 2018 lidar). Presented in comma Separated Value (CSV) formatted table.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: X
Attribute_Definition: Easting (State Plane) of the mesh element point location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1754007.0
Range_Domain_Maximum: 1766486.4
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Y
Attribute_Definition: Northing (State Plane) of mesh element point location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2288128.5
Range_Domain_Maximum: 2317623.3
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Z
Attribute_Definition: Ground elevation of each mesh element.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 426.1
Range_Domain_Maximum: 581.1
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Detailed_Description:

Entity_Type:

Entity_Type_Label: glacialFlood_modelData_SMS-SRH2D_snowRv_beebee.zip
Entity_Type_Definition:

An SRH2D model is provided for the lower Snow River. The zipped model folder contains all files necessary to open and view the model as an alternative way to see input and output data. An SMS executable is necessary to open and view the model files as the data is in a proprietary format. The executable can be downloaded at https://www.aquaveo.com/downloads-sms

Entity_Type_Definition_Source: Author defined

Detailed_Description:

Entity_Type:

Entity_Type_Label: glacialFlood_peakModelOutput_SMS-SRH2D_snowRv_beebee.csv
Entity_Type_Definition:

Table with output of water surface elevations and bed elevations as calculated by SRH2D for the peak flow of each model run. Presented in comma Separated Value (CSV) formatted table.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: X
Attribute_Definition: Easting (State Plane) of the mesh element point location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1754406.0
Range_Domain_Maximum: 1766486.4
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Y
Attribute_Definition: Northing (State Plane) of mesh element point location.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2288128.5
Range_Domain_Maximum: 2317623.3
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: 2007PeakWaterSurface
Attribute_Definition:

Water surface elevation from the peak flow of the 2007 flood simulation (model hour 164) at each mesh element.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 438.4
Range_Domain_Maximum: 539.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: 2007PeakBedElevation
Attribute_Definition:

Bed elevation at each mesh element after sediment transport (erosion and/or deposition). Calculated for the peak flow (model hour 164) of the 2007 flood simulation

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 425.7
Range_Domain_Maximum: 539.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: 2017PeakWaterSurface
Attribute_Definition:

Water surface elevation from the peak flow of the 2017 flood simulation (model hour 88) at each mesh element.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 438.1
Range_Domain_Maximum: 539.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: 2017PeakBedElevation
Attribute_Definition:

Bed elevation at each mesh element after sediment transport (erosion and/or deposition). Calculated for the peak flow (model hour 88) of the 2017 flood simulation

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 425.7
Range_Domain_Maximum: 539.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: 2019PeakWaterSurface
Attribute_Definition:

Water surface elevation from the peak flow of the 2019 flood simulation (model hour 108) at each mesh element.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 440.9
Range_Domain_Maximum: 539.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: 2019PeakBedElevation
Attribute_Definition:

Bed elevation at each mesh element after sediment transport (erosion and/or deposition). Calculated for the peak flow (model hour 108) of the 2019 flood simulation

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 423.5
Range_Domain_Maximum: 539.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: CheckFloodPeakWaterSurface
Attribute_Definition:

Water surface elevation from the peak flow of the check flood (60,000 cubic feet per second) simulation (model hour 108) at each mesh element.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 440.9
Range_Domain_Maximum: 541.0
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: CheckFloodPeakBedElevation
Attribute_Definition:

Bed elevation at each mesh element after sediment transport (erosion and/or deposition). Calculated for the peak flow (model hour 108) of the check flood (60,000 cubic feet per second) simulation

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 422.5
Range_Domain_Maximum: 539.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: -999
Enumerated_Domain_Value_Definition:

code for "no data at this cell" in model output. Typically because the cell described by the coordinate is not inundated.

Enumerated_Domain_Value_Definition_Source: Author defined

Detailed_Description:

Entity_Type:

Entity_Type_Label: glacialFlood_boundaryConditions_SMS-SRH2D_snowRv_beebee.csv
Entity_Type_Definition:

Table defining inlet and exit boundary conditions for each model run. The table contains simulation time for each outburst flood, inlet boundary flow in cubic feet per second, and exit water surface elevation in feet. In the case of the 2019 and check flood simulations, the inlet and exit boundary conditions have separate simulation hours. Presented in comma Separated Value (CSV) formatted table.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: 2007 Simulation Time
Attribute_Definition:

Hour of 2007 model simulation run. Hour zero is just before apparent rise in discharge due to the outburst flood begins, for the purpose of modeling the flood. Usually for the purpose of modeling, the 0 hour discharge is held steady for a few hours so that the model can stabilize at the initial discharge before increasing at the same rate as the measured outburst flood.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 214
Attribute_Units_of_Measure: hour

Attribute:

Attribute_Label: 2007 Inlet Flow
Attribute_Definition:

Discharge (as measured in the middle of the model domain) applied to the upstream inlet of the main fork of Snow River. The South Fork of Snow River had a steady input of 95 cubic feet per second for the 2007 simulation.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1415
Range_Domain_Maximum: 18805
Attribute_Units_of_Measure: cubic feet per second

Attribute:

Attribute_Label: 2007 Exit Elevation
Attribute_Definition:

Water surface elevation at the downstream edge (outlet) of the 2007 model. Exit water surfaces are the elevation of Kenai Lake as measured at the outlet plus 1.5 feet to account for the higher water surface at the upstream end of the lake.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 434.7
Range_Domain_Maximum: 439.6
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: 2017 Simulation Time
Attribute_Definition: Hour of 2017 model simulation run
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 118
Attribute_Units_of_Measure: hour

Attribute:

Attribute_Label: 2017 Inlet Flow
Attribute_Definition:

Discharge (as measured in the middle of the model domain) applied to the upstream inlet of the main fork of Snow River. The South Fork of Snow River had a steady input of 336 cubic feet per second for the 2017 simulation.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3304
Range_Domain_Maximum: 28464
Attribute_Units_of_Measure: cubic feet per second

Attribute:

Attribute_Label: 2017 Exit Elevation
Attribute_Definition:

Water surface elevation at the downstream edge (outlet) of the model. Exit water surfaces are the elevation of Kenai Lake as measured at the outlet plus 1.5 feet to account for the higher water surface at the upstream end of the lake.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 438.2
Range_Domain_Maximum: 442.4
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: 2019 and Check Flood Simulation Time Inlet
Attribute_Definition:

Hours of 2019 and check flood model simulation run associated with inlet boundary condition flows.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 130
Attribute_Units_of_Measure: hours
Attribute_Measurement_Resolution: 0.05

Attribute:

Attribute_Label: 2019 Inlet Flow
Attribute_Definition:

Discharge (as measured in the middle of the model domain) applied to the upstream inlet of the main fork of Snow River. The South Fork of Snow River had a steady input of 207 cubic feet per second for the 2019 simulation.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2853
Range_Domain_Maximum: 43393
Attribute_Units_of_Measure: cubic feet per second

Attribute:

Attribute_Label: Check Flood Inlet Flow
Attribute_Definition:

Discharge (as measured in the middle of the model domain and multiplied by 1.5) applied to the upstream inlet of the main fork of Snow River. The South Fork of Snow River had a steady input of 207 cubic feet per second for the check flood simulation.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3073
Range_Domain_Maximum: 59793
Attribute_Units_of_Measure: cubic feet per second

Attribute:

Attribute_Label: 2019 and Check Flood Simulation Time Exit
Attribute_Definition:

Hour of 2019 and Check Flood model simulation run as associated with exit elevations

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 130
Attribute_Units_of_Measure: hour

Attribute:

Attribute_Label: 2019 and Check Flood Exit Elevation
Attribute_Definition:

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 437.7
Range_Domain_Maximum: 442.0
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Tabular Input/Output Data and Model Files for a Two-dimensional Hydraulic and Sediment Transport Model of the Lower 10 Kilometers of the Snow River Near Seward, Alaska

Metadata: