Field measurements of water depth and percent cover of benthic algae from two reaches of the Buffalo National River in Arkansas acquired in August 2021
Dates
Start Date
2021-08-24
End Date
2021-08-25
Publication Date
2022-02-07
Citation
Legleiter, C.J., and Hodges, S.W., 2022, Remotely sensed data and field measurements of water depth and percent cover of benthic algae from two reaches of the Buffalo National River in Arkansas acquired in August and September 2021: U.S. Geological Survey data release, https://doi.org/10.5066/P9J5QXDJ.
Summary
Field measurements of water depth and percent cover of benthic algae were acquired from two reaches of the Buffalo National River in northern Arkansas August 24-25, 2021, to support research on remote sensing of benthic algae from aerial photographs and satellite images. The depth measurements included in this data release were obtained by wading the channel and measuring water depth with a stadia rod. Percent of algae cover on the streambed at each sample point was estimated visually to the nearest 10% on a scale from 0.0 to 1.0. The spatial location of each measurement was obtained using a Leica Zeno GG04 RTK GPS receiver. The map projection and datum for these data are UTM Zone 15 N and WGS84, respectively. This data release consists [...]
Summary
Field measurements of water depth and percent cover of benthic algae were acquired from two reaches of the Buffalo National River in northern Arkansas August 24-25, 2021, to support research on remote sensing of benthic algae from aerial photographs and satellite images. The depth measurements included in this data release were obtained by wading the channel and measuring water depth with a stadia rod. Percent of algae cover on the streambed at each sample point was estimated visually to the nearest 10% on a scale from 0.0 to 1.0. The spatial location of each measurement was obtained using a Leica Zeno GG04 RTK GPS receiver. The map projection and datum for these data are UTM Zone 15 N and WGS84, respectively. This data release consists of two comma-delimited (*.csv) text files, one for each reach, with four columns: Easting_m, Northing_m, Depth_m, and Algae_cover; the units of the spatial coordinates and the depths are meters and the algal coverage is in percent from 0.0 to 1.0. This ground-based data set was used to calibrate spectrally based models for inferring water depths from passive optical image data, assess the accuracy of image-derived depth estimates, and train classifications of benthic algal coverage.
Click on title to download individual files attached to this item.
BuffaloRiverFieldData.xml “Metadata describing the data and how it was collected and organized” Original FGDC Metadata
View
17.72 KB
application/fgdc+xml
BuffaloRiverGilbertReachFieldData20210824.csv “Field measurements of depth and algal cover from Gilbert Reach on 8/24/2021”
7.1 KB
text/csv
BuffaloRiverMaumeeReachFieldData20210825.csv “Field measurements of depth and algal cover from Maumee Reach on 8/25/2021”
5.17 KB
text/csv
Gilbert_algae_7.jpg “Photograph of benthic algae on the Gilbert reach of the Buffalo National River”
1.11 MB
image/jpeg
Related External Resources
Type: Related Primary Publication
Legleiter, C.J., and Hodges, S.W., 2022, Mapping Benthic Algae and Cyanobacteria in River Channels from Aerial Photographs and Satellite Images: A Proof-of-Concept Investigation on the Buffalo National River, AR, USA: Remote Sensing, v. 14, no. 4, p. 953, https://doi.org/10.3390/rs14040953.
For questions concerning this data set, please contact:
Dr. Carl J. Legleiter - cjl@usgs.gov
Geomorphology and Sediment Transport Laboratory
United States Geological Survey
4620 Technology Drive, Suite #400
Golden, CO 80403
Purpose
The purpose of this study was to develop and test remote sensing methods for mapping benthic algae in river channels from aerial photographs and satellite images. The field-based measurements of depth and algal coverage included in this data release were used to calibrate spectrally based models for inferring water depths from passive optical image data, assess the accuracy of image-derived depth estimates, and train classifications of benthic algal coverage.
Rights
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Preview Image
Photograph of benthic algae on the Gilbert reach of the Buffalo National River