Skip to main content
U.S. flag

An official website of the United States government

Central Midwest Water Science Center

Welcome to the Central Midwest Water Science Center’s (CMWSC) Website. We offer information on streamflow, water quality, water-use, and groundwater data for Illinois, Iowa, and Missouri. We conduct unbiased, scientific hydrologic investigations & research projects to effectively manage CMWSC and our Nation's water resources through joint efforts with our partners.

 

News

Harvesting Knowledge: A Recap of the USGS-NPS-Tribal Collaboration at Effigy Mounds National Monument

Harvesting Knowledge: A Recap of the USGS-NPS-Tribal Collaboration at Effigy Mounds National Monument

Friday's Findings: Environmental Contaminants and Agricultural Production

Friday's Findings: Environmental Contaminants and Agricultural Production

StreamStats regression equation updates for Illinois

StreamStats regression equation updates for Illinois

Publications

Bathymetric contour maps, surface area and capacity tables, and bathymetric change maps for selected water-supply lakes in Missouri, 2022–23

Bathymetric data were collected at 13 water-supply lakes around the periphery of Missouri by the U.S. Geological Survey in cooperation with the Missouri Department of Natural Resources and various local agencies, as part of a multiyear effort to establish or update the surface area and capacity tables for the surveyed lakes. Surveys were carried out during the months of April and May in...
Authors
Benjamin C. Rivers, Richard J. Huizinga, Garett J. Waite

Diverging trends in nitrate and phosphorus loads and yields across Illinois watersheds, 1997–2022

Illinois is a major contributor of nutrients to the northern Gulf of Mexico. As such, the State of Illinois initiated efforts to curb nutrient runoff over the last several decades. To evaluate progress towards these reductions, water-quality data were used to estimate incremental loads and yields of nitrate plus nitrite (NO3) and total phosphorus (TP) from 1997–2022 for 49 Illinois...
Authors
Brock Jacob Watson Kamrath, Jennifer C. Murphy, Lindsey Ayn Schafer, Hannah Lee Podzorski, Gregory F. McIsaac

Hydrologic and hydraulic analyses of Silver Creek and selected tributaries associated with Scott Air Force Base, Illinois, 2022–24

A hydrologic model of the Silver Creek Basin in southwest Illinois, and a hydraulic model of a selected reach of Silver Creek and local tributaries on and near Scott Air Force Base, Illinois, were developed to assess the effects of temporal land-use development in the Silver Creek Basin, the potential effects of projected changes based on future precipitation, and the effects of added...
Authors
Charles V. Cigrand, David C. Heimann, Paul H. Rydlund

Science

Preliminary Research Sheds Light on Proper Analysis and Sample Handling for the Tire-Derived Contaminants 6PPD and 6PPD-quinone

Tire and road wear particles have been shown to cause acute effects to sensitive aquatic animals and degrade their habitats. U.S. Geological Survey (USGS) scientists developed methods to accurately identify aquatic compounds, such as 6PPD and 6PPD-quinone, that can cause acute mortality events in coho salmon (Oncorhynchus kisutch).
link

Preliminary Research Sheds Light on Proper Analysis and Sample Handling for the Tire-Derived Contaminants 6PPD and 6PPD-quinone

Tire and road wear particles have been shown to cause acute effects to sensitive aquatic animals and degrade their habitats. U.S. Geological Survey (USGS) scientists developed methods to accurately identify aquatic compounds, such as 6PPD and 6PPD-quinone, that can cause acute mortality events in coho salmon (Oncorhynchus kisutch).
Learn More

Statewide Assessment of Iowa Streams Links Landscape Characteristics to Antibiotic Resistance Signatures

U.S. Geological Survey (USGS) scientists conducted the first statewide assessment of antibiotics, antibiotic resistant bacteria (ARB), and antibiotic resistant genes (ARGs) in streams (water column and bed sediment samples) across Iowa. Results indicated that ARB and ARGs were prevalent, and a combination of watershed characteristics (such as land use, livestock population, and human population)...
link

Statewide Assessment of Iowa Streams Links Landscape Characteristics to Antibiotic Resistance Signatures

U.S. Geological Survey (USGS) scientists conducted the first statewide assessment of antibiotics, antibiotic resistant bacteria (ARB), and antibiotic resistant genes (ARGs) in streams (water column and bed sediment samples) across Iowa. Results indicated that ARB and ARGs were prevalent, and a combination of watershed characteristics (such as land use, livestock population, and human population)...
Learn More

A National Assessment of Pesticide, PFAS, Microplastic, and Antibiotic Resistance Gene Exposures in White-Tailed Deer

Research has documented exposures and consequential environmental health effects of pesticides, PFAS, microplastics, and antibiotic resistance genes in environmental biota. Little is known, however, regarding such effects in white-tailed deer ( Odocoileus virginianus).
link

A National Assessment of Pesticide, PFAS, Microplastic, and Antibiotic Resistance Gene Exposures in White-Tailed Deer

Research has documented exposures and consequential environmental health effects of pesticides, PFAS, microplastics, and antibiotic resistance genes in environmental biota. Little is known, however, regarding such effects in white-tailed deer ( Odocoileus virginianus).
Learn More

Multimedia

Council Bluffs Iowa Water Field Office
Council Bluffs Water Field Office Location
Council Bluffs Water Field Office Location
Group photo EFMO
Group selfie at Effigy Mounds National Monument.
Group selfie at Effigy Mounds National Monument.
Picture of Lee's Summit Office
Picture of Lee's Summit Office
Picture of Lee's Summit Office
A USGS hydrologic technician prepares to lift an orange streamflow measuring device onto the ledge of a bridge.
Measuring flooding in the South Grand River in Urich, Missouri
Measuring flooding in the South Grand River in Urich, Missouri
A USGS hydrologic technician on a bridge guides an orange streamflow measuring device across a river to measure flooding
Measuring flooding in the South Grand River in Urich, Missouri
Measuring flooding in the South Grand River in Urich, Missouri
Olivette, MO Building
Olivette, MO Building
Olivette, MO Building
Fort Dodge, Iowa USGS Office
Fort Dodge Iowa Office
Fort Dodge Iowa Office
Paul H Rydlund
Paul new profile picture.
Paul new profile picture.
Video thumbnail reads: NGWOS AEMs for Illinois. Aerially Mapping The Illinois River Basin NGWOS AEMs For Illinois - Aerially Mapping the Illinois River Basin
NGWOS AEMs For Illinois - Aerially Mapping the Illinois River Basin
Was this page helpful?