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The U.S. Geological Survey (USGS) has started monitoring water surface flow reversals, commercial vessel traffic, and temperature and specific conductance in the U.S. Army Corps of Engineers Electric Dispersal Barrier System (EDBS) on the Chicago Sanitary and Ship Canal, Chicago, Illinois. Data are collected during each water year. These data are planned to be released on USGS ScienceBase annually. Data monitored during a water year is released in a separate child item in this page. The metadata in each child item details the data sources and processes used to derive the final data files, and attribute information of each data files.
The Cook County Bureau of Technology (BOT) identified a need for bathymetric and water-quality surveys of the surface water bodies within Cook County to inform management of surface-water and stormwater resources, aid emergency responders during search and rescue operations, inform construction permitting, and improve understanding of aquatic habitat. The U.S. Geological Survey (USGS) and the BOT worked closely together to designate specific water bodies to be surveyed. The size, accessibility, availability of existing data, and use of the water body were considered during selection. The objectives of this joint study between the USGS and the BOT are to collect, process, and analyze bathymetric and ancillary water-quality...
The bathymetric data set was collected in Rock Run on Dec. 10, 2015 by USGS ILWSC staff Clayton Bosch and Louis Pappas. The bathymetric data were collected with an RD Instruments 1200 kHz ADCP (S/N 8617) and Trimble Ag 162 GPS mounted on the M/V La Moine. A temporary reference point (TRP) was established on the north side of the footbridge over the connecting channel to the Des Plaines River. The mean water surface elevation (504.97 feet, WGS 84) during the survey was established from a temporary reference point whose elevation was later established by GPS survey. The measured depths were then converted to a lake bed elevation. The location and depth data were compiled into a bathymetry dataset (Rock Run Bathymetry...
The U.S. Geological Survey Central Midwest Water Science Center completed a report (Over and others, 2023) documenting methods, results, and applications of an updated flood-frequency study for the State of Illinois. This landing page contains data releases associated with Over and others (2023), which include data related to the peak-flow frequency analysis at streamgages in Illinois, digital datasets of basin characteristics considered in the study, hydro-conditioned geographic information systems (GIS) layers used in the Illinois StreamStats application, and tables of data used to develop regional regression equations for ungaged areas of Illinois. References Cited: Over, T.M., Marti, M.K., O'Shea, P.S., Sharpe,...
This landing page contains peak-flow frequency analyses by the U.S. Geological Survey Central Midwest Water Science Center. Sets of analyses are published as data releases which are child items to this landing page.
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