Salmon spawning locations (redds) mapped in the field along the American River, California, November 5-7, 2018
Dates
Start Date
2018-11-05
End Date
2018-11-07
Publication Date
2020-07-02
Citation
Legleiter, C.J., and Harrison, L.R., 2020, Image data and field measurements used to map salmon spawning locations via remote sensing, American River, California, November 5-7, 2018: U.S. Geological Survey data release, https://doi.org/10.5066/P998CGA2.
Summary
This data release includes images and field measurements used to map chinook salmon spawning locations along the American River near Sacramento, California, via remote sensing; the data were collected November 5-7, 2018. The purpose of this study was to develop and test a spectrally based technique for identifying salmon spawning locations, known as redds, from various types of remotely sensed data. Traditionally, redds have been mapped by eye while walking the bank or from a boat, or by an observer in an aircraft or an interpreter visually examining aerial images. The goal of this proof-of-concept investigation was to assess the potential for more efficient, objective, and automated redd mapping from conventional true color (RGB, [...]
Summary
This data release includes images and field measurements used to map chinook salmon spawning locations along the American River near Sacramento, California, via remote sensing; the data were collected November 5-7, 2018. The purpose of this study was to develop and test a spectrally based technique for identifying salmon spawning locations, known as redds, from various types of remotely sensed data. Traditionally, redds have been mapped by eye while walking the bank or from a boat, or by an observer in an aircraft or an interpreter visually examining aerial images. The goal of this proof-of-concept investigation was to assess the potential for more efficient, objective, and automated redd mapping from conventional true color (RGB, or red/green/blue) and hyperspectral images.
This child page provides redd locations mapped in the field, with their coordinates defined by surveying the centers of the redds with real-time kinematic (RTK) GPS receivers. The field-mapped redds were used to train and validate various image-based approaches to mapping salmon spawning locations.
Click on title to download individual files attached to this item.
ReddLocationMetadata.xml “Metadata about the data and the processes by which it was produced” Original FGDC Metadata
View
11.65 KB
application/fgdc+xml
AmericanRiverAtNimbusDam.JPG “Overview of redd mapping study site along the American River below Nimbus Dam”
127.07 KB
image/jpeg
AmericanReddData.csv “Text file with east, north coordinates of salmon redds mapped in the field”
520 Bytes
text/csv
Related External Resources
Type: Related Primary Publication
Harrison, LR, Legleiter, CJ, Overstreet, BT, Bell, TW, Hannon, J. Assessing the potential for spectrally based remote sensing of salmon spawning locations. River Research and Applications. 2020; 36(8): 1618– 1632. https://doi.org/10.1002/rra.3690
For questions concerning this data set, please contact:
Dr. Carl J. Legleiter - cjl@usgs.gov, 303-271-3651
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 a spectrally based technique for identifying salmon spawning locations, known as redds, from various types of remotely sensed data. Traditionally, redds have been mapped by eye while walking the bank or from a boat, or by an observer in an aircraft or an interpreter visually examining aerial images. The goal of this proof-of-concept investigation was to assess the potential for more efficient, objective, and automated redd mapping from conventional true color (RGB, or red/green/blue) and hyperspectral images. The field-mapped redd locations provided on this child page were used to train and validate image-based approaches to mapping salmon spawning locations.
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
Overview of redd mapping study site along the American River below Nimbus Dam