Water Surfaces Elevations During an Outburst Flood from Pressure Transducers at Snow River, Alaska, 2019

Identification_Information:

Citation:

Citation_Information:

Originator: Robin A. Beebee (ORCID: 0000-0002-2976-7294)
Originator: Ellen B. Justis
Publication_Date: 20200603
Title:

Geospatial_Data_Presentation_Form: tabular digital data
Publication_Information:

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

Other_Citation_Details:

Beebee, R.A., Justis, E.B., 2020, Water surfaces elevations during an outburst flood from pressure transducers at Snow River, Alaska, 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9VVQH9D

Online_Linkage: https://doi.org/10.5066/P9VVQH9D
Larger_Work_Citation:

Citation_Information:

Originator: Robin A. Beebee
Originator: Jeff S. Conaway
Publication_Date: 2012
Title:

Streambed Scour Monitoring and Modeling at Bridge Crossings in Alaska

Geospatial_Data_Presentation_Form: web site
Publication_Information:

Publication_Place: online
Publisher: 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 locations, pressure readings, and baro-corrected water surface elevations from three submersible pressure transducers deployed in the channel and floodplain of Snow River during the 2019 glacial lake outburst flood.

Purpose:

Data from the pressure transducers was used to determine water surface elevations during a glacial outburst flood in August, 2019 and to verify a hydrodynamic model of the outburst flood.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20190820
Ending_Date: 20190826

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Description_of_Geographic_Extent: Pressure transducer locations along Snow River
Bounding_Coordinates:

West_Bounding_Coordinate: -149.34500
East_Bounding_Coordinate: -149.33200
North_Bounding_Coordinate: 60.33400
South_Bounding_Coordinate: 60.28600

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:ASC271

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: hydrographic datasets
Theme_Keyword: hydrology
Theme_Keyword: floods

Theme:

Theme_Keyword_Thesaurus: NASA GCMD Earth Sciences Thesaurus
Theme_Keyword: flood plain
Theme_Keyword: river
Theme_Keyword: ice-dammed lakes

Place:

Place_Keyword_Thesaurus: USGS Geographic Names Information System
Place_Keyword: Alaska
Place_Keyword: Snow River

Access_Constraints: none
Use_Constraints: none
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: United States

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

Data_Set_Credit:

The Alaska Railroad Corporation provided funding to collect and analyze these data

Native_Data_Set_Environment: Windows 10, Hoboware v. 3.7
Cross_Reference:

Citation_Information:

Originator: Robin A. Beebee
Originator: Karenth Dworsky
Publication_Date: Unknown
Title: Streambed Scour at Bridges in Alaska
Geospatial_Data_Presentation_Form: Web site
Publication_Information:

Publication_Place: On line
Publisher: USGS, Alaska Science Center

Other_Citation_Details: Site showing scour monitoring in real time at selected bridges.
Online_Linkage:

https://www.usgs.gov/centers/asc/science/streambed-scour-bridges-alaska

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The accuracy of depths/water surface elevations was not tested in the field as the sensors were deployed out of water and were not accessible during the flood when they were submerged. However, data were compared to each other and with a nearby stream gage and appear consistent. The manufacturer states that instruments are accurate to 0.01 feet.

Logical_Consistency_Report: All values fall within the expected range.
Completeness_Report:

No data has been omitted or filtered and dataset is considered complete.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Horizontal coordinates are accurate within about 10 feet, consistent with the 5-minute average location accuracy of a recreational grade GPS.

Lineage:

Process_Step:

Process_Description:

Data from the submerged U20 pressure transducers and from a non-submerged U20L transducer were downloaded. Onset HOBOWare software was used to correct the submerged transducer data for atmospheric pressure fluctuations recorded by the non-submerged transducer.

Process_Date: 20200827

Process_Step:

Process_Description:

Cages holding the HOBO U20 pressure transducers were surveyed to known elevation points on bridge plans using a level and stadia rod.

Process_Date: 08272019

Process_Step:

Process_Description:

The elevation of the pressure transducer and the recorded depths were used to compute a time-series of water-surface elevation.

Process_Date: 08282019

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: 0004
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9999
Longitude_of_Central_Meridian: -150.0
Latitude_of_Projection_Origin: 54.0
False_Easting: 1640416.6666667
False_Northing: 0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 1
Ordinate_Resolution: 1

Planar_Distance_Units: survey feet

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983 (NAD 83)
Ellipsoid_Name: Geodetic Reference System 1980
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 0.10
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: 2019_SnowRiverOutburstFlood_PressureTransducerData_coordinates
Entity_Type_Definition:

Table containing the position (horizontal and vertical), serial number, and location name of each pressure transducer deployed.

Entity_Type_Definition_Source: producer defined

Attribute:

Attribute_Label: PT_Name
Attribute_Definition: Name given to each pressure transducer deployed
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Each name is referenced to the nearest bridge (605 is the Seward highway bridge, 145 is the railroad bridge at railroad milepost 14.5, and 152 is the rail bridge at railroad MP 15.2).

Attribute:

Attribute_Label: Northing_ft
Attribute_Definition: The y-coordinate of the transducer location
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 2296861.0
Range_Domain_Maximum: 2314474.0
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: Easting_ft
Attribute_Definition: X-coordinate of the pressure transducer
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1758461.0
Range_Domain_Maximum: 1760878.0
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 1

Attribute:

Attribute_Label: PT_Elevation_ft
Attribute_Definition: The elevation of the pressure transducer in NAVD88
Attribute_Definition_Source: producer defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 441.3
Range_Domain_Maximum: 483.8
Attribute_Units_of_Measure: feet
Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: SN
Attribute_Definition: Serial number of the transducer
Attribute_Definition_Source: Producer Defined
Attribute_Domain_Values:

Unrepresentable_Domain:

These are the unique serial numbers given to each HOBO U20 unit by the manufacturer

Detailed_Description:

Entity_Type:

Entity_Type_Label: 2019_SnowRiverOutburstFlood_PressureTransducerData_(PT_Name)
Entity_Type_Definition:

Pressure transducer data for each transducer. Each table is named using the PT_Name corresponding to the nearest bridge.

Entity_Type_Definition_Source: Producer Defined

Attribute:

Attribute_Label: Date_Time
Attribute_Definition:

The date and time of the transducer measurement. Time is 8 hours minus Greenwich Mean Time (GMT) or Alaska Daylight Time (AKDT).