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700kHz Bathymetric Roughness of select Rock Outcrops of the St. Croix River, May 2021

Dates

Publication Date
Start Date
2021-05-11
End Date
2021-05-12

Citation

Hanson, J.L., Strange, J.M., Sattler, S.R., Hoy, E.E., and Newton, T.J., 2022, Hydroacoustic mapping of physical habitat for imperiled freshwater mussels in the St. Croix River: U.S. Geological Survey data release, https://doi.org/10.5066/P9EUMCSF.

Summary

This dataset is a digital surface model of the roughness for five (of six) sites where known rock structures exist in the St. Croix River. Roughness is the degree of irregularity of the surface and is computed from elevation. Roughness measures will be used for investigating the use of hydroacoustic technologies for quantifying habitat for imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua) typically associated with rock structures (e.g., wing dams, revetment) in rivers. The determination of the roughness plays a role in the analysis of terrain elevation data; it’s useful for calculations of the river morphology and physical geography in general. Multibeam sonar data were collected using a [...]

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Attached Files

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Extension: Franconia_rough.zip
Franconia_rough.tif 7.65 MB
Franconia_rough.tif-ColorRamp.SLD 2.07 KB
Extension: LoghouseB_rough.zip
LoghouseB_rough.tif 3.61 MB
LoghouseB_rough.tif-ColorRamp.SLD 2.07 KB
Extension: LoghouseC_rough.zip
LoghouseC_rough.tif 7.65 MB
LoghouseC_rough.tif-ColorRamp.SLD 2.07 KB
Extension: Osceola_rough.zip
Osceola_rough.tif 9.05 MB
Osceola_rough.tif-ColorRamp.SLD 2.07 KB
Extension: PineIsland_rough.zip
PineIsland_rough.tif 12.53 MB
PineIsland_rough.tif-ColorRamp.SLD 2.07 KB

Purpose

Data were collected to quantify water depth, flow, and rock configuration (e.g., spatial arrangement, size, shape) associated with habitat (e.g., bedrock, rock outcrops, etc.) occupied by imperiled mussels Spectaclecase (Margaritifera monodonta) and Salamander (Simpsonaias ambigua). Combining these types of information with measures of slope, roughness, and backscatter may provide more information to qualitatively and quantitatively describe these rock habitats. Information on habitat associations can be used by managers to identify and characterize existing occupied habitats, identify potential reintroduction areas, and implement restoration programs. The roughness surfaces are intended to be used to quantitatively and qualitatively describe rock structure among the different rock sites and determine whether associations exist among the rock habitats and mussels.

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