Computed Streamflow Using Satellite Data for the Copper, Nushagak, Tanana, Yukon, Susitna, and Knik, Koyukuk Rivers, Alaska, 2008-2021

Identification_Information:

Citation:

Citation_Information:

Originator: Smith, Travis L. (ORCID: 0000-0002-3448-2787)
Originator: Bjerklie, David M. (ORCID: 0000-0002-9890-4125)
Originator: Sturtevant, Luke P. (ORCID: 0000-0001-8983-8210)
Originator: Dudley, Robert W. (ORCID: 0000-0002-0934-0568)
Publication_Date: 20220928
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:

Suggested Citation: Smith, T.L., Bjerklie, D.M., Sturtevant, Luke P., Dudley, R.W. 2022. Computed streamflow using satellite data for the Copper, Nushagak, Tanana, Yukon, Susitna, and Knik, Koyukuk Rivers, Alaska, 2008-2021: U.S. Geological Survey data release, https://doi.org/10.5066/P94LLG4R

Online_Linkage: https://doi.org/10.5066/P94LLG4R
Larger_Work_Citation:

Citation_Information:

Originator: U.S. Geological Survey, Alaska Science Center
Publication_Date: 2019
Title: Remote Sensing of Discharge R and D
Geospatial_Data_Presentation_Form: website
Series_Information:

Series_Name: Alaska Science Portal
Issue_Identification: 450

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=450

Description:

Abstract:

Relations between water-surface elevation data derived from satellite altimetry and dynamic surface water extent data derived from LANDSAT imagery data were used with a modified Manning's equation to compute remotely sensed streamflows (RSQ) at locations on the Tanana, Yukon, Susitna, Nushagak, Copper, Koyukuk and Knik Rivers in Alaska using satellite data. Data are organized into zip archives named for each study reach. Refer to the README file in each study reach archive for additional reach-specific details.

Purpose:

The relations between satellite altimetry water-surface elevations (stage) and computed flows were used to derive stage-discharge relations for each river location to support development of methods to estimate streamflow using satellite data (RSQ).

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19930603
Ending_Date: 20210929

Currentness_Reference: observed

Status:

Progress: Complete
Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -168.3984
East_Bounding_Coordinate: -140.4492
North_Bounding_Coordinate: 71.5249
South_Bounding_Coordinate: 57.5158

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5f524c5a82ce4c3d123b9c02

Theme:

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

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: Remote sensing
Theme_Keyword: Streamflow
Theme_Keyword: Altimetry measurement
Theme_Keyword: Multispectral imaging

Place:

Place_Keyword_Thesaurus: USGS Geographic Names Information System (GNIS)
Place_Keyword: Alaska
Place_Keyword: Yukon River
Place_Keyword: Tanana River
Place_Keyword: Susitna River
Place_Keyword: Knik River
Place_Keyword: Copper River
Place_Keyword: Koyukuk River
Place_Keyword: Nushagak River

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

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Spatial error estimates are provided as attributes in the data tables.

Logical_Consistency_Report: Attribute values fall within expected ranges.
Completeness_Report: No data were omitted, no data are missing.
Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Altimetry horizontal accuracy is approximately 250 to 1000 km relative to the reference ground tracks for the mission. DSWE image-to-image registration accuracy of less than or equal to 12-meter Root Mean Square Error with 95 percent confidence.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Global Water Monitor
Publication_Date: 2022
Title: Water Monitor Rivers and Wetlands
Geospatial_Data_Presentation_Form: online database
Publication_Information:

Publication_Place: online
Publisher: National Aeronautics and Space Administration (NASA)

Other_Citation_Details:

NASA Water Monitor web portal, accessed March 30, 2022 to May 23, 2022, at https://blueice.gsfc.nasa.gov/gwm/river/Index

[Query parameters (Target names and IDs): 008120 Copper, 008140 Nushagak, 008100 Knik, 008382 Koyukuk, 008093 Susitna, 008051 Tanana, 00800 Yukon]

Online_Linkage: https://blueice.gsfc.nasa.gov/gwm/river/Index

Type_of_Source_Media: digital database file
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20080101
Ending_Date: 20191231

Source_Currentness_Reference: observervation date

Source_Citation_Abbreviation: Altimetry Data
Source_Contribution:

10-Day satellite altimetry data from seven Global Water Monitor targets (Copper, Nushagak, Kink, Koyukuk, Susitna, Tanana, and Yukon). Used to relate to observed reach-averaged widths and do flow computations.

Source_Information:

Source_Citation:

Citation_Information:

Originator: USGS Earth Resources Observation And Science (EROS) Center
Publication_Date: 2018
Title:

Collection-1 Landsat Level-3 Dynamic Surface Water Extent (DWSE) Science Product

Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:

Publication_Place: Sioux Falls, South Dakota, USA
Publisher:

U.S. Geological Survey, Earth Resources Observation and Science (EROS) Center

Other_Citation_Details:

USGS EarthExplorer web portal, accessed 2018 at https://earthexplorer.usgs.gov/

Query parameters: Landsat tile identifiers for all DSWE products used for analysis are provided in each "_altim_DSWE_relation_DATA.csv" table included with this data package.

Online_Linkage: https://doi.org/10.5066/F7445KQK

Type_of_Source_Media: online database
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20080101
Ending_Date: 20191231

Source_Currentness_Reference: observed

Source_Citation_Abbreviation: DSWE Data
Source_Contribution:

Dynamic Surface Water Extent (DSWE) pixels were tabulated from DSWE raster image tiles; names of tiles used are included in the data tables

Source_Information:

Source_Citation:

Citation_Information:

Originator: USGS National Geospatial Program
Publication_Date: 20120426
Title:

3D Elevation Program - NAVD88 Meters - 1/3rd-Arc-Second (best available data)

Geospatial_Data_Presentation_Form: raster digital data
Other_Citation_Details:

The National Map (TNM) web portal, accessed May 15, 2015 at https://apps.nationalmap.gov/downloader/

Query parameters: [Elevation Products (3DEP); 1/3 arc-second DEM]

Online_Linkage: https://apps.nationalmap.gov/downloader/

Type_of_Source_Media: online database
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20120426

Source_Currentness_Reference: access date

Source_Citation_Abbreviation: 3DEP
Source_Contribution: Elevation data for slope computation accessed 20150515

Source_Information:

Source_Citation:

Citation_Information:

Originator: USGS National Water Information System (NWIS)
Publication_Date: 2015
Title: Water Data for the Nation
Geospatial_Data_Presentation_Form: online database
Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

U.S. Geological Survey, 2015, USGS Surface-Water Daily Data for the Nation: U.S. Geological Survey National Water Information System database, accessed May 15, 2015, at https://doi.org/10.5066/F7P55KJN

[Query parameters: Site Number = Copper R near Chitina (15212000), Nushagak River at Ekwok (15302500), Knik Rive near Palmer (15281000), Koyukuk River at Hughes (15564900), Susitna River at Sunshine (15292780), Tanana Rive at Fairbanks (15485500), Yukon River near Stevens Village (15453500)]

Online_Linkage: https://doi.org/10.5066/F7P55KJN

Type_of_Source_Media: online database
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20080101
Ending_Date: 20191231

Source_Currentness_Reference: observation date

Source_Citation_Abbreviation: NWIS
Source_Contribution:

Daily streamflows used for calibration and evaluation of flow models

Source_Information:

Source_Citation:

Citation_Information:

Originator: Bjerkile, D.M.
Originator: Birkett, C.M.
Originator: Jones, J.W.
Originator: Carabajal, C.
Originator: Rover, J.A.
Originator: Fulton, J.W.
Originator: Garambois, P.A.
Publication_Date: 2018
Title:

Satellite remote sensing estimation of river discharge-Application to the Yukon River Alaska

Geospatial_Data_Presentation_Form: journal article
Series_Information:

Series_Name: Journal of Hydrology
Issue_Identification: 561:1000-1018

Publication_Information:

Publication_Place: online
Publisher: Elsevier

Other_Citation_Details:

Bjerkile, D.M., Birkett, C.M., Jones, J.W., Carabajal, C., Rover, J.A., Fulton, J.W., Garambois, P.A. 2018. Satellite remote sensing estimation of river discharge-Application to the Yukon River Alaska. Journal of Hydrology 561:1000-1018 https://doi.org/10.1016/j.jhydrol.2018.04.005

Online_Linkage: https://doi.org/10.1016/j.jhydrol.2018.04.005

Type_of_Source_Media: publication
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2018

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Bjerklie et al. 2018
Source_Contribution: Methods

Source_Information:

Source_Citation:

Citation_Information:

Originator: Jones, J.W.
Publication_Date: 2019
Title:

Improved Automated Detection of Subpixel-Scale Inundation-Revised Dynamic Surface Water Extent (DSWE) Partial Surface Water Tests

Geospatial_Data_Presentation_Form: journal article
Series_Information:

Series_Name: Remote Sensing
Issue_Identification: 11(4):374

Publication_Information:

Publication_Place: online
Publisher: Elsevier

Other_Citation_Details:

Jones, J.W. 2019. Improved Automated Detection of Subpixel-Scale Inundation-Revised Dynamic Surface Water Extent (DSWE) Partial Surface Water Tests. Remote Sensing 11(4):374 https://doi.org/10.3390/rs11040374

Online_Linkage: https://doi.org/10.3390/rs11040374

Type_of_Source_Media: publication
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2019

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Jones
Source_Contribution: Methods

Process_Step:

Process_Description:

Altimetry water-surface elevation data were downloaded from the Global Water Monitor web site at https://blueice.gsfc.nasa.gov/gwm/river/Index (accessed March 30, 2022 to May 23, 2022). Elevations in meters and relative to EGM2008 datum.

Source_Used_Citation_Abbreviation: Altimetry Data
Process_Date: 20220502
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Travis L Smith
Contact_Organization: U.S. Geological Survey, NORTHEAST REGION

Contact_Position: Hydrologist
Contact_Address:

Address_Type: mailing address
Address: 331 Commerce Way
City: Pembroke
State_or_Province: NH
Postal_Code: 03275-3718
Country: US

Contact_Voice_Telephone: 603-226-7820
Contact_Facsimile_Telephone: 603-226-7849
Contact_Electronic_Mail_Address: tlsmith@usgs.gov

Process_Step:

Process_Description:

Dynamic Surface Water Extent (DSWE) water pixels were tabulated for all historical Landsat Collection 1 Level-3 DSWE scenes from 2009 to 2021 that intersect each study reach shapefile polygon. Study reach polygons are archived in each study reach subfolder and named shp.zip.

Source_Used_Citation_Abbreviation: DSWE Data
Process_Date: 20220502
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Luke Sturtevant

Contact_Address:

Address_Type: mailing and physical
Address: 196 Whitten Road
City: Augusta
State_or_Province: ME
Postal_Code: 04330
Country: USA

Contact_Voice_Telephone: 207-626-6624

Process_Step:

Process_Description:

River reach slopes were computed using elevations from the National Elevation Dataset and 3DEP in NAVD88 Meters.

Source_Used_Citation_Abbreviation: 3DEP
Process_Date: 20200529
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Robert W Dudley

Contact_Address:

Address_Type: mailing and physical
Address: 196 Whitten Road
City: Augusta
State_or_Province: ME
Postal_Code: 04330
Country: USA

Contact_Voice_Telephone: 207-626-6615

Process_Step:

Process_Description:

For study reaches with active streamgages, daily streamflows were downloaded from the USGS National Water Information Systems (NWIS). For study reaches with inactive steamages that do not overlap with altimetry data, field measurements were downloaded from NWIS.

Source_Used_Citation_Abbreviation: NWIS
Process_Date: 20220502
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Travis L Smith
Contact_Organization: U.S. Geological Survey, NORTHEAST REGION

Contact_Position: Hydrologist
Contact_Address:

Address_Type: mailing address
Address: 331 Commerce Way
City: Pembroke
State_or_Province: NH
Postal_Code: 03275-3718
Country: US

Contact_Voice_Telephone: 603-226-7800
Contact_Facsimile_Telephone: 603-226-7849
Contact_Electronic_Mail_Address: tlsmith@usgs.gov

Process_Step:

Process_Description:

Flows were computed, calibrated, and evaluated using gaged daily mean flows at each reach with an active streamgage and historic streamflow measurements at each reach with a discontinued streamgages. Flows were computed using equations 1 and 15 from Bjerkile, et al 2018. Altimetry data were used to determine water-surface elevation. Altimetry data and DSWE data were used to estimate reach-average river width as a function of altimetry elevation. NED data were used to estimate channel slopes. Streamflow data were used to calibrate the unknown roughness parameters and channel geometry assumptions. See the README file for each study reach subfolder for more detailed information.

Source_Used_Citation_Abbreviation: Altimetry Data
Source_Used_Citation_Abbreviation: DSWE Data
Source_Used_Citation_Abbreviation: 3DEP
Source_Used_Citation_Abbreviation: NWIS
Process_Date: 20220516
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Travis L Smith
Contact_Organization: U.S. Geological Survey, NORTHEAST REGION

Contact_Position: Hydrologist
Contact_Address:

Address_Type: mailing address
Address: 331 Commerce Way
City: Pembroke
State_or_Province: NH
Postal_Code: 03275-3718
Country: US

Contact_Voice_Telephone: 603-226-7800
Contact_Facsimile_Telephone: 603-226-7849
Contact_Electronic_Mail_Address: tlsmith@usgs.gov

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference:

U.S. Geological Survey, National Hydrography Dataset (NHD) reach names and numbers, and streamgage station names and numbers refer to specific geographic locations recorded in the NWIS database.

Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: World Geodetic System 1984 (WGS84)
Ellipsoid_Name: WGS84
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257223563

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: Earth Gravitational Model 2008 (EGM2008)
Altitude_Resolution: 0.01
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: [reach name].zip
Entity_Type_Definition:

Zip packages containing: three CSV tables, one vector geospatial file in KML and SHP file formats, and one descriptive README file in PDF format. Details of each file are provided in the following 'Entity' definitions in this metadata record.

Filenaming convention: [reach name]: e.g., "knik_palmer"

Entity_Type_Definition_Source: Author defined

Detailed_Description:

Entity_Type:

Entity_Type_Label:

[reach name]_[reach id]_[altimetry id]_altim_DSWE_relation_DATA.csv

Entity_Type_Definition:

Comma Separated Value (CSV) file containing altimetry elevation and Dynamic Surface Water Extent (DSWE) data used to relate altimetry elevations to observed reach-averaged widths.

Filenaming convention: [reach name]: e.g., "knik_palmer"; [reach id]: e.g., "Zone 1"; [altimetry id]: e.g., "8100_Knik_TPJOJ_2_5_1", where "8100" indicates the satellite overpass number, "Knik" is the river name, and "TPJOJ_2_5_1" indicates the version of the altimetry product used (version 2.5.1).

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: date
Attribute_Definition: Date of observation
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 01/01/2008
Range_Domain_Maximum: 07/14/2020
Attribute_Units_of_Measure: Date (MM/DD/YYYY)

Attribute:

Attribute_Label: DSWE0
Attribute_Definition:

Area of pixels (square kilometers) in the study reach polygon indicating no water

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: DSWE1
Attribute_Definition:

Area of pixels (square kilometers) in the study reach polygon indicating water with confidence level 1 (Jones 2019)

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: DSWE2
Attribute_Definition:

Area of pixels (square kilometers) in the study reach polygon indicating water with confidence level 2 (Jones 2019)

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: DSWE3
Attribute_Definition:

Area of pixels (square kilometers) in the study reach polygon indicating water with confidence level 3 (Jones 2019)

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: DSWE4
Attribute_Definition:

Area of pixels (square kilometers) in the study reach polygon indicating water with confidence level 4 (Jones 2019)

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: Mask
Attribute_Definition:

Area of pixels (square kilometers) in the study reach polygon indicating application of mask. Cloud, cloud shadow, and/or snow are flagged as such.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: DSWEnoData
Attribute_Definition:

Area of pixels (square kilometers) in the study reach polygon with missing data.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: DSWEtotal
Attribute_Definition:

The area sum of all pixels in the study reach polygon (DSWE0, DSWE1, DSWE2, DSWE3, DSWE4, Mask, and No Data)

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: tileName
Attribute_Definition:

Filenames of the Landsat scenes used to derive the DSWE tabulations

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Filenames of the Landsat scenes used to derive the DSWE tabulations. See https://www.usgs.gov/faqs/what-naming-convention-landsat-collections-level-1-scenes?qt-news_science_products=0#qt-news_science_products

Attribute:

Attribute_Label: DSWE12
Attribute_Definition:

Sum of area of pixels (square kilometers) in the study reach polygon indicating water with confidence levels 1 and 2

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100
Attribute_Units_of_Measure: square kilometers
Attribute_Measurement_Resolution: 0.0001

Attribute:

Attribute_Label: pctMissing
Attribute_Definition:

Percent pixel area denoted as "No Data" relative to the entire reach polygon area.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100

Attribute:

Attribute_Label: pctMask
Attribute_Definition:

Percent pixel area denoted as "Mask" relative to the entire reach polygon area.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 100

Attribute:

Attribute_Label: mission
Attribute_Definition:

The satellite used to collect the altimetry elevation observation.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: JASN2
Enumerated_Domain_Value_Definition: JASON-2 Satellite
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: JASN3
Enumerated_Domain_Value_Definition: JASON-3 Satellite
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: error
Attribute_Definition:

The standard error in altimetry-observed water surface elevations in meters from satellite.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

The standard error in altimetry-observed water surface elevations in meters from satellite.

Attribute:

Attribute_Label: wse_m
Attribute_Definition:

The altimetry-observed water surface elevation in meters, EGM2008 datum.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain: The altimetry-observed water surface elevation in meters

Attribute:

Attribute_Label: length_km
Attribute_Definition:

Study reach length in kilometers. Used to divide the DSWE area to compute reach-averaged width.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 30
Attribute_Units_of_Measure: kilometers
Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: DSWE12_w2
Attribute_Definition: The computed reach averaged width, squared, in square meters.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 4000000
Attribute_Units_of_Measure: square meters
Attribute_Measurement_Resolution: 0.01

Detailed_Description:

Entity_Type:

Entity_Type_Label: [reach name]_[reach id]_[altimetry id]_RSQ_DATA.csv
Entity_Type_Definition:

Comma Separated Value (CSV) file containing altimetry, width, and flow data used to compute, calibrate, and evaluate remotely sensed streamflows (RSQ).

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: mission
Attribute_Definition:

The satellite used to collect the altimetry elevation observation. Column heading includes [altimetry id] information.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: JASN2
Enumerated_Domain_Value_Definition: JASON-2 satellite
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: JASN3
Enumerated_Domain_Value_Definition: JASON-3 satellite
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: wse_m
Attribute_Definition:

The altimetry-observed water surface elevation in meters, EGM2008 datum.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain: The altimetry-observed water surface elevation in meters

Attribute:

Attribute_Label: error
Attribute_Definition:

Standard error in altimetry observed water surface elevations in meters from satellite.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Standard error in altimetry observed water surface elevations in meters from satellite

Attribute:

Attribute_Label: datetime
Attribute_Definition:

Date and time of the altimetry-observed water surface elevation.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Date and time of the altimetry-observed water surface elevation.

Attribute:

Attribute_Label: Q_cfs
Attribute_Definition: Observed daily mean streamflow in cubic feet per second.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain: Observed daily mean streamflow in cubic feet per second.

Attribute:

Attribute_Label: Q_cms
Attribute_Definition: Observed daily mean streamflow in cubic meters per second.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain: Observed daily mean streamflow in cubic meters per second

Attribute:

Attribute_Label: Q_cal
Attribute_Definition:

Boolean field indicating whether the observed streamflow value is used for calibration.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: True
Enumerated_Domain_Value_Definition: Gaged streamflow is used for calibration
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: False
Enumerated_Domain_Value_Definition: Gaged streamflow is not used for calibration
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: Q_val
Attribute_Definition:

Boolean field indicating whether the observed streamflow value is used for evaluation (validation).

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: False
Enumerated_Domain_Value_Definition: Gaged streamflow is not used for evaluation
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: True
Enumerated_Domain_Value_Definition: Gaged streamflow is used for evaluation
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: widthObserved
Attribute_Definition:

Boolean indicating whether the study reach-averaged width is observed using DSWE data or computed from an empirical altimetry-width relation.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: False
Enumerated_Domain_Value_Definition:

Reach-averaged width is computed from an empirical altimetry-width relation

Enumerated_Domain_Value_Definition_Source: Author defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: True
Enumerated_Domain_Value_Definition: Reach-averaged width is observed using DSWE data
Enumerated_Domain_Value_Definition_Source: Author defined

Attribute:

Attribute_Label: width_m
Attribute_Definition: Reach averaged width in meters.
Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain: Reach averaged width in meters

Attribute:

Attribute_Label: Q_cms_momma
Attribute_Definition:

Remotely sensed computed streamflow (RSQ) in cubic meters per second using the Modified Manning's Method Algorithm (MOMMA)

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Remotely sensed computed streamflow (RSQ) in cubic meters per second

Detailed_Description:

Entity_Type:

Entity_Type_Label: [reach name]_[reach id]_[altimetry id]_RATING_TABLE.csv
Entity_Type_Definition:

Comma Separated Value (CSV) file containing altimetry water-surface elevations paired with remotely sensed streamflow (RSQ) estimates.

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: wse_m
Attribute_Definition:

The altimetry-observed water surface elevation in meters, EGM2008 datum.

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain: The altimetry-observed water surface elevation in meters

Attribute:

Attribute_Label: flow_cms
Attribute_Definition:

Remotely sensed computed streamflow (RSQ) in cubic meters per second

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Remotely sensed computed streamflow (RSQ) in cubic meters per second

Attribute:

Attribute_Label: flow_cfs
Attribute_Definition:

Remotely sensed computed streamflow (RSQ) in cubic feet per second

Attribute_Definition_Source: Author defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Remotely sensed computed streamflow (RSQ) in cubic feet per second

Detailed_Description:

Entity_Type:

Entity_Type_Label: [reach name]_[reach id]
Entity_Type_Definition:

Vector geospatial file with polygons delineating the reach boundary used to compute the reach-averaged river width data, based off of pixilated sum of water area in DSWE scenes in DSWE_Processing_Reports. Presented in both ESRI shapefile (SHP) and Keyhole Markup Language (KML) formats.

Filenaming convention: [reach name]: e.g., "knik_palmer"; [reach id]: e.g., "Zone 1"

Entity_Type_Definition_Source: Author defined

Attribute:

Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain: Internal feature number

Attribute:

Attribute_Label: Id
Attribute_Definition: Internal feature number
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain: Internal feature number

Attribute:

Attribute_Label: ZoneID
Attribute_Definition: reach id
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:

Unrepresentable_Domain: reach id

Computed Streamflow Using Satellite Data for the Copper, Nushagak, Tanana, Yukon, Susitna, and Knik, Koyukuk Rivers, Alaska, 2008-2021

Metadata: