Cross-Section Geometry at Two Bridges over the Gunnison River in Western Colorado, 2016–17

Metadata Updated: October 10, 2019

This dataset contains cross-section surveys of the Gunnison River at Colorado Department of Transportation bridges I-04-K and I-03-A, western Colorado, 2016–17. The surveys were performed using a combination of: Trimble R8 Real-Time Kinematic Global Navigation Satellite System (RTK-GNSS) receiver, a USGS bridge crane with sounding weights, and optical levels. During surveys performed in 2016, a base was established at each bridge using the RTK-GNSS equipment. Subsequent surveys of channel geometry were performed using optical levels for ground surface observations above the water line and sounding weights for streambed observations below the water line, referenced to the base established in 2016. Streambed elevations were interpolated at 10 foot intervals between the measured points for both bridges because measured elevations were not always obtained at the exact same stationing from 2016 to 2017. Additionally, streambed elevations were interpolated at 5 foot intervals for stations within 20 feet of either side of the monitored piers. Stationing and elevation data are presented in the .CSV files, with one file for each bridge. Discussion of these data is presented in Henneberg (2018) USGS Scientific Investigations Report, “Real-Time Streambed Scour Monitoring at Two Bridges over the Gunnison River in Western Colorado, 2016–17." These data were collected in cooperation with the Colorado Department of Transportation.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date September 13, 2018
Metadata Created Date July 9, 2019
Metadata Updated Date October 10, 2019
Reference Date(s) January 1, 2018 (publication)
Frequency Of Update notPlanned
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI CKAN Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Date September 13, 2018
Metadata Created Date July 9, 2019
Metadata Updated Date October 10, 2019
Reference Date(s) January 1, 2018 (publication)
Responsible Party Southwest Region (Point of Contact)
Contact Email
Access Constraints Use Constraints: none, Access Constraints: none
Bbox East Long -107.70721435479
Bbox North Lat 39.116936223754
Bbox South Lat 38.384384705315
Bbox West Long -108.73443603443
Coupled Resource
Frequency Of Update notPlanned
Guid
Harvest Object Id 0340d23f-ff7c-411b-84c0-4b46394db925
Harvest Source Id 34ce571b-cb98-4e0b-979f-30f9ecc452c5
Harvest Source Title DOI CKAN Harvest Source
Licence Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true
Temporal Extent Begin 2016-01-01
Temporal Extent End 2017-01-01

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