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Data represent reports of capture of black carp by commercial fishers and biologists with information regarding size characteristics of collected individuals, dimensions of capture gears, and spatial and temporal distributions of captures.
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Suspended-sediment concentration, percent by mass finer than 0.0625 millimeters, instantaneous stream discharge, and suspended-sediment discharge for seven sites in the Lower Mississippi-Atchafalaya River Basin have been revised following a program review. This dataset provides the pre- and post-review revised values, along with supporting information as described in the associated publication (Norton and others, 2018). Data are included for October 1989 through February 2015 at seven sites, represented by nine sampling stations. The stations are located near the Old River Control Complex and the lower Atchafalaya River. The original data were collected as part of a cooperative program between the U.S. Geological...
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Black carp Mylopharyngodon piceus and grass carp Ctenopharyngodon idella are morphologically similar species imported from eastern Asia to North America as biological control organisms. Preferred identification methods are coloration and pharyngeal tooth form. Grass carp possess serrated teeth and black carp molariform teeth. Examination of pharyngeal teeth causes extensive damage to a specimen, and is labor and time intensive. Coloration can vary within a species and fades with preservation. We present a suite of external characteristics consisting of a truss network canonical variate analysis of distance measurements among landmarks on the lateral view of the head of each fish, the ratio of head length to mouth...
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This data release contains annual estimates of suspended-sediment concentration and load for the Mississippi River, St. Francisville site and the Atchafalaya River, Melville site from 1980-2015. Annual estimates and flow-normalized estimates were generated using the Weighted Regressions on Time, Season and Discharge (WRTDS) model. Input data for the model included suspended-sediment concentrations publicly available from the U.S. Geological Survey (USGS)'s National Water Information System (U.S. Geological Survey, 2016) and daily-mean streamflow estimates from the Army Corps of Engineers (2016) and USGS. These annual concentrations and loads are used to support trend analyses and provide estimates of sediment availability...
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As part of the U.S. Geological Survey (USGS) Water Availability and Use Science Program study of the Mississippi Alluvial Plain (MAP), a shapefile representing seven generalized regions of the MAP extent as defined by Painter and Westerman (2018) was compiled. The generalized regions provide a framework for analysis, visualization, and regional comparisons of local data within the MAP. Regions north of the Red River were based on those described by Ackerman (1996). The Grand Prairie region includes the area north and east of the Arkansas River and south and west of the White River within the MAP. The Cache region includes the area north and east of the White River and the area generally west of Crowley’s Ridge,...


    map background search result map search result map Revised Data and Supporting Information for Seven Sites located on the Lower Mississippi and Atchafalaya Rivers sampled as part of a cooperative sediment program with the U.S. Army Corps of Engineers, October 1989 through February 2015 Annual estimates of suspended-sediment concentration and load to support trend analysis on the Mississippi River and Atchafalaya River, 1980-2015 Generalized regions of the Mississippi Alluvial Plain Black carp and grass carp morphometric measurements Black Carp in North America: a description of range, habitats, time of year, and methods of reported captures Revised Data and Supporting Information for Seven Sites located on the Lower Mississippi and Atchafalaya Rivers sampled as part of a cooperative sediment program with the U.S. Army Corps of Engineers, October 1989 through February 2015 Annual estimates of suspended-sediment concentration and load to support trend analysis on the Mississippi River and Atchafalaya River, 1980-2015 Generalized regions of the Mississippi Alluvial Plain Black Carp in North America: a description of range, habitats, time of year, and methods of reported captures Black carp and grass carp morphometric measurements