Data

This dataset consists of digital scans of color infrared aerial photography from the Upper Mississippi River System collected in 1975, orthophotos created from those digital scans, and mosaics of the orthophotos for each navigation pool.

Acoustic Doppler Current Profiler (ADCP) surveys were conducted in October 2023 and August 2024 along several miles of the St. Croix River to measure water current velocities. Although ADCP is commonly used to estimate river discharge, these surveys were designed for a different purpose; therefore, USGS ADCP standards were not followed. Instead, we evaluated alternative approaches to...

This dataset contains data collected with an acoustic Doppler current profiler (ADCP) to measure velocity profiles over a large area with established submersed aquatic vegetation within the impounded area of the Mississippi River Navigation Pool 13, located northeast of Fulton, Illinois. Velocity profiles were obtained using a Xylem brand (San Diego, California) SonTek M9 ADCP for three...

The data is a compilation of long-term resource monitoring (LTRM) data, hydrology data, and weather data across the Upper Mississippi River, USA. The intent is to better understand the relationships of the macrophyte (aquatic vegetation) community diversity to basic weather/climate, hydrologic, and water quality variables at multiple spatial scales (e.g., plot, aquatic area, stratum, and...

We collected less than 160,000 images of particles using an imaging flow cytometer (the FlowCam). Images were then identified manually using morphology to the lowest taxonomic resolution possible. Greater than half of those images were either zooplankton, detritus or could not be identified (unknown). These identified images were then used to train and test a convolutional neural network...

The hydrologic regime is a fundamental driver of ecosystem patterns and processes in the Upper Mississippi River System. This database represents a comprehensive, searchable dataset of Upper Mississippi River System's hydrologic conditions to support scientific and management applications. It comprises daily water surface elevations from 140 U.S. Army Corps of Engineers gaging stations...

This data release contains input data, estimated demographic parameters, movement probabilities, and simulated population outputs for a Silver Carp (Hypophthalmichthys molitrix) metapopulation model. The model explores the importance of the interjurisdictional connection between the Illinois and Mississippi Rivers, with a focus on developing strategies to reduce the risk of an invasion...

Silver maple (Acer saccharinum L.) is a fast-growing, flood-tolerant species common in bottomland forests of eastern North America. Tree-ring research on silver maple is limited due to the species’ relatively short lifespan and reputation for indistinct rings. The wood anatomy of silver maple is characterized by a diffuse-porous ring structure with small, uniformly distributed vessels...

The Illinois River receives nutrients from point and non-point runoff from upstream urban and agricultural areas. These excess nutrients could be contributing to harmful algal blooms in the Illinois River and its tributaries. The Upper Mississippi River Restoration Program has been monitoring water quality on the La Grange Pool in the Illinois River since 1993. The data collected from...

This data release includes 1) results from intact sediment core experiments to measure nutrient release and uptake from sediments in the Maumee River mouth and adjacent nearshore areas. 2) physical and chemical properties of sediments sampled at the same sites where sediments were collected for intact core experiments, plus additional sites in the area. 3) Results of water column...

Estimating individual age is important for defining the structure of fish populations (i.e., recruitment, growth, and mortality), including the assessment of many management objectives. Knowledge of the relative precision of age estimates using standard calcified structures is required to estimate the age of Grass Carp. Therefore, our objective was to evaluate the precision of annuli...

This study aimed to assess the toxicity of a commercially available pyrethrum pesticide to virile crayfish (Faxonius virilis, Hagen 1870), which were exposed for 24-h intervals during 96-h tests at two different temperatures. Adult virile crayfish were used in trials as proxy for red swamp crayfish (Procambarus clarkii, Girard 1852) to represent a conservative estimate of potency of...