Profile and discharge data for five waterways in the Utqiagvik-Atqasuk-Wainwright region, Alaska, collected August 2022

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Frequently anticipated questions:


What does this data set describe?

Title:
Profile and discharge data for five waterways in the Utqiagvik-Atqasuk-Wainwright region, Alaska, collected August 2022
Abstract:
Profile and discharge data for five waterways in the Utqiagvik-Atqasuk-Wainwright region, Alaska, collected August 2022, Raw Data File 2022-15, presents discharge measurements and riverbed profile data from five stream gage sites between Atqasuk, Wainwright, and Utqiaġvik. The five stream gages (22RPD001-Nigisaktuvik River; 22RPD002-Inaru River; 22RPD003-Kugrua River; 22RPD004-Kucheak Creek; 22RPD005-unnamed Inaru tributary) were installed near potential river crossings for the Arctic Strategic Transportation and Resource (ASTAR) project. The waterways were measured between August 8, 2022, and August 22, 2022 and are assumed to be in a low flow stage, as they are primarily supplied by snowmelt and rainwater run-off. The installed gaging equipment will help determine when true low flow occurs on these waterways. Site locations, stream profiles, and discharge measurements are provided in the accompanying tables. The data are available from the DGGS website: http://doi.org/10.14509/30915.
Supplemental_Information:
discharge:    Discharge results are reported in TSV file format.	
profile:    Raw data for each stream profile reported in CSV format.	
stations-water-elevation:    Monitoring station locations, labels, and elevation; .csv format.
  1. How might this data set be cited?
    Germann, J.T., and Daanen, R.P., 2022, Profile and discharge data for five waterways in the Utqiagvik-Atqasuk-Wainwright region, Alaska, collected August 2022: Raw Data File RDF 2022-15, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 5 p.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -158.618720
    East_Bounding_Coordinate: -157.589440
    North_Bounding_Coordinate: 70.682930
    South_Bounding_Coordinate: 70.482060
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2022
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: table
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a point data set.
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest .0000001. Longitudes are given to the nearest .0000001. Latitude and longitude values are specified in decimal degrees. The horizontal datum used is WGS84.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    rdf2022-15-discharge-22RPD001-nigisaktuvik-river-1.tsv, rdf2022-15-discharge-22RPD001-nigisaktuvik-river-2.tsv, rdf2022-15-discharge-22RPD002-inaru-river.tsv, rdf2022-15-discharge-22RPD003-kugrua-river-1.tsv, rdf2022-15-discharge-22RPD003-kugrua-river-2.tsv, rdf2022-15-discharge-22RPD004-kucheak-creek.tsv, rdf2022-15-discharge-22RPD005-inaru-tributary.tsv
    Discharge results are reported in TSV file format. (Source: DGGS)
    rdf2022-15-profile-22RPD001-nigisaktuvik-river.csv, rdf2022-15-profile-22RPD002-inaru-river.csv, rdf2022-15-profile-22RPD003-kugrua-river.csv, rdf2022-15-profile-22RPD004-kucheak-creek.csv, rdf2022-15-profile-22RPD005-inaru-tributary.csv, rdf2022-15-profile-data-dictionary.csv
    Raw data for each stream profile reported in CSV format. (Source: DGGS)
    rdf2022-15-stations-water-elevation-data-dictionary.csv, rdf2022-15-stations-water-elevation.csv
    Monitoring station locations, labels, and elevation; .csv format. (Source: DGGS)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
  2. Who also contributed to the data set?
    These data products were funded by a Capital Improvement Project from the State of Alaska. We thank the residents of Atqasuk and the surrounding area as well as the Atqasuk Corporation for their hospitality and accommodations, the North Slope Borough, and U.S. Bureau of Land Management for approving the permits which allowed the construction of infrastructure and access via helicopter, and especially Tyler Stokes and Katreen Wikstrom Jones for assistance in the field as well as Maritime Helicopters Inc. for their expert flight services. We respect the local people and their land in the Northwest Arctic region.
  3. To whom should users address questions about the data?
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    USA

    (907)451-5020 (voice)
    (907)451-5050 (FAX)
    dggspubs@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.

Why was the data set created?

This study was implemented as part of the Arctic Strategic Transportation and Resource (ASTAR) project, which aims to evaluate sand and gravel resources along a corridor approximately between Nuiqsut, Atqasuk and Barrow, AK. The project will generate geologic maps and a database with information about location of geologic observations as well as the quality and types of geologic materials

How was the data set created?

  1. From what previous works were the data drawn?
    Hofstra, A.H. and Kreiner, D.C., 2020 (source 1 of 2)
    Hofstra, A.H., and Kreiner, D.C., 2020, Systems-deposits-commodities-critical minerals table for the earth mapping resources initiative: Open-File Report OF 2022-1042, U.S. Geological Survey, United States.

    Online Links:

    Other_Citation_Details: 24 p
    Type_of_Source_Media: report
    Source_Contribution: data compilation
    U.S. Geological Survey, 2018 (source 2 of 2)
    U.S. Geological Survey, 2018, Alaska Resource Data File (ARDF): U.S. Geological Survey, Unknown.

    Online Links:

    Type_of_Source_Media: report
    Source_Contribution: data compilation
  2. How were the data generated, processed, and modified?
    Date: Aug-2022 (process 1 of 3)
    Gaging sites - In conjunction with infrastructure installation, we collected discharge measurements and data to construct riverbed profiles at five stream gage sites between Atqasuk, Wainwright, and Utqiaġvik. To avoid eddies and other current anomalies, we placed gaging sites along selected waterways where the channel was relatively straight, and where flow disturbances were minimal. We collected data for profile measurements and discharge at sites 22RPD002-5 along an engineering tape placed across the streams perpendicular to the current flow. For 22RPD001 we collected discharge data at two locations (22RPD001-1 and 22RPD001-2). Discharge was measured along the profile transect for 22RPD001-1, and approximately 200 meters upstream from the profile transect for 22RPD001-2. Since the first measurement was measured in a portion of the river with low-velocity flow, the second measurement was done in a river section with a faster current. This was to verify that the original discharge measurement was within the margin of error, as the discharge sensor may not report reliable values when measuring currents with low velocity. Since 22RPD001-1 and 22RPD001-2 provided similar discharge measurements, we report both.
    Date: Aug-2022 (process 2 of 3)
    Velocity measurement - Discharge was measured using an OTT Hydromet MF Pro meter with a velocity sensor attached to an adjustable five-foot wading rod. We sampled at least 21 velocity measurement locations for each waterway. The discharge was measured using the mean-section method, which divides the cross-section into individual flow segments. The segments are defined by half of the distance to the neighbor vertical measurement, a vertical measurement being the location where velocity was measured using the wading rod and probe. Since the first and last vertical measurements should be as close to the stream edge as possible, the first sample location was gathered where the sensor could be completely submerged. Figure 2 in the accompanying report depicts the definition variables for the mid-section method. We collected all measurements from wadable rivers. First, we collected velocity measurements across the transect at a fixed interval, with the interval length depending on the channel width. Once completed, if any station accounted for greater than of equal 10 percent of the total calculated discharge, we added additional stations on either side to increase the density of measurements in high-flow areas of the channel and provide a more accurate horizontal velocity gradient. When the station depth was less than 2.5 ft (0.8 m), we collected a single velocity measurement at 60 percent depth. At stations with maximum depth greater than or equal to 2.5 ft (0.8 m), we collected measurements at 20 percent and 80 percent depth.
    Date: Aug-2022 (process 3 of 3)
    Stream bed profile - After calculating discharge, we collected data to construct a stream bed profile, on the same day, along the same transect, using a differential real-time kinetic (RTK) global positioning system (GPS) consisting of a Trimble R12 base station and a Trimble R8 GPS receiver. The profile includes the submerged channel bed and the riverbank, or the perceived high-water mark if no bank was present. We took measurements approximately every 0.5 ft (0.15 m) across the stream channel; measurements captured outside the channel did not have as high a frequency to reduce sampling time, though the spacing between measurement locations was reduced in areas of greater vertical variability to capture the terrain accurately. The differential GPS base station data was post-processed with the National Oceanic and Atmospheric Administration's (NOAA) Online Positioning User Service (OPUS) to achieve survey quality location information. We calculated the receiver locations using the survey quality base station data in Trimble Business Center, and the calibrated location information for each point was exported as a .CSV file.
  3. What similar or related data should the user be aware of?
    Buzard, R.M., Heiner, Daniel, Overbeck, J.R., and Glenn, R.J.T., 2021, Photogrammetry-derived orthoimagery and elevation for Wainwright, Alaska, collected August 3, 2021: Raw Data File RDF 2021-18, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 4 p
    Gavel, M.M., and Hubbard, T.D., 2021, Digital data addendum: Analytical data and field observations from surficial geology and morphology of the Alaskan central Arctic Coastal Plain, 1981-1987: Report of Investigation RI 93-1A, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 6 p
    Herbst, A.M., and Daanen, R.P., 2022, Lidar-derived elevation data for the Utqiagvik-Atqasuk region, Alaska, collected August 2019: Raw Data File RDF 2022-10, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 8 p

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Data values were directly measured and calculated using the methology and instruments described in the accompanying report.
  2. How accurate are the geographic locations?
    Profile locations and elevations where collected using a differential real-time kinetic (RTK) global positioning system (GPS) consisting of a Trimble R12 base station and a Trimble R8 GPS receiver. The differential GPS base station data were post-processed with the National Oceanic and Atmospheric Administration's (NOAA) Online Positioning User Service (OPUS) to achieve survey quality location information.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This data release is complete.
  5. How consistent are the relationships among the observations, including topology?
    Not applicable

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints:
This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
Use_Constraints:
Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  1. Who distributes the data set? (Distributor 1 of 1)
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    USA

    (907)451-5020 (voice)
    (907)451-5050 (FAX)
    dggspubs@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  2. What's the catalog number I need to order this data set? RDF 2022-15
  3. What legal disclaimers am I supposed to read?
    The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 09-Dec-2022
Metadata author:
Alaska Division of Geological & Geophysical Surveys
Attn: Simone Montayne
Metadata Manager
3354 College Road
Fairbanks, AK
USA

(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov
Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.50 on Fri Dec 09 20:27:50 2022