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  3. Topographic and sediment grain size data used to evaluate potential habitat for anadromous salmonids on the upper Merced and Tuolumne Rivers in California
  4. Sediment grain size measurements from the upper Merced and Tuolumne Rivers in California

Sediment grain size measurements from the upper Merced and Tuolumne Rivers in California

Dates

Publication Date

Citation

Legleiter, C.J., Harrison, L.R., Boughton, D.A., Nicol, C.L., and Richardson, R.R., 2021, Topographic and sediment grain size data used to evaluate potential habitat for anadromous salmonids on the upper Merced and Tuolumne Rivers in California: U.S. Geological Survey data release, https://doi.org/10.5066/P9MUPT5X.

Summary

Field measurements of riverbed grain size were collected from the Merced and Tuolumne Rivers in California to support research on anadromous salmonids. The grain size estimates included in this dataset were obtained from plan-view digital images of grains on exposed gravel and cobble bars (n = 109 for the Merced, n = 26 for the Tuolumne). The images were used to estimate grain-size distributions using the algorithm of Buscombe (2013). In this dataset we report the median grain size (D50), the 16th percentile (D16) and 84th percentile (D84). The spatial location of each measurement was obtained via a Trimble R10 RTK GPS receiver. The map projection and datum for these data from the Merced River are UTM Zone 11 N and WGS84, respectively. [...]

Contacts

Author :
Carl J Legleiter, Lee Harrison, David Boughton, Ryan Richardson, Colin Nicol
Point of Contact :
Carl J Legleiter
Metadata Contact :
Carl J Legleiter
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Integrated Modeling & Prediction Division
USGS Mission Area :
Water Resources

Attached Files

Click on title to download individual files attached to this item.

Tuolumne_grainSize.xml
“Metadata describing the data and how it was obtained and processed.”
Original FGDC Metadata
View 		15.81 KB application/fgdc+xml
Merced_grainSize.xml
“Metadata describing the data and how it was obtained and processed.”
Original FGDC Metadata
View 		14.64 KB application/fgdc+xml
Tuolumne_20140915a.JPG
“Tuolumne River, California” 		thumbnail 9.03 MB image/jpeg
Shapefile: Merced_grainSize.zip
Merced_grainSize.zip
“Shapefile with grain size data from the Merced River” 		6.18 KB
Shapefile: Tuolumne_grainSize.zip
Tuolumne_grainSize.zip
“Shapefile with grain size measurements along the Tuolumne River” 		2.21 KB

Material Request Instructions

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 estimate capacity for reintroduction in two iconic San Joaquin tributaries, the Merced and Tuolumne river systems. Currently there are no anadromous salmonids in either system due to large impassable dams. The goal of this investigation was to create a practical workflow that can be used to estimate this dynamic capacity at fine spatial and temporal resolution over a broad extent and extended time period, and use it to see what can be learned about capacity for reintroduction of Spring-run Chinook salmon and Steelhead in the our two river systems of interest. Information on sediment grain size, along with data on several other variables, was used to quantify the amount and quality of habitat available for these species.

Rights

Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Tuolumne River, California
Tuolumne River, California

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DOI https://www.sciencebase.gov/vocab/category/item/identifier 10.5066/P9MUPT5X
DOI https://www.sciencebase.gov/vocab/category/item/identifier 10.5066/P9MUPT5X

Shapefile Extension

files
nameMerced_grainSize.zip
titleShapefile with grain size data from the Merced River
contentTypeapplication/x-zip-compressed
pathOnDisk__disk__47/2a/0a/472a0a53b702434055bd321a170277ccb76d4b20
size6331
dateUploadedThu Nov 05 16:28:06 MST 2020
checksum
value79aee7d081884ea75aad4d8c57c97546
typeMD5
geometryTypePoint
nameMerced_grainSize
nativeCrsWGS_1984_UTM_Zone_11N

Shapefile Extension

files
nameTuolumne_grainSize.zip
titleShapefile with grain size measurements along the Tuolumne River
contentTypeapplication/x-zip-compressed
pathOnDisk__disk__6c/0e/fb/6c0efb8a07976d6e9772f385e49f5f2cf509eee4
size2258
dateUploadedMon Nov 09 05:08:37 MST 2020
checksum
valueffefc345bb1a5f60e07d21456ded2625
typeMD5
geometryTypePoint
nameTuolumne_grainSize
nativeCrsWGS_1984_UTM_Zone_10N

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