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Within the OKI WSC are subject-matter experts, research scientists and laboratories, and personnel with expertise in diverse fields. To this excellence-based USGS philosophy, OKI WSC scientists bring expertise in mathematical modeling of water, advanced computer programming, groundwater and surface-water research, biologic and ecosystems science, soil science, water-quality analysis, and more.

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News

Xan Fredericks
May 30, 2019

Xan Fredericks, Lidar Coordinator for the Coastal/Marine Hazards and Resources Program and the USGS Co-Chair for the Florida Coastal Mapping Program, will present "A Federal-State Partnership for Mapping Florida's Coast and Seafloor" at the 20th annual Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Airborne Coastal Mapping and Charting Technical Workshop.

Neal Craig Technology demonstration at the OKI 2019 cooperator meeting
May 1, 2019

The USGS Kentucky office hosted their third annual cooperator meeting on April 18, 2019 and the Indiana office hosted their second cooperator meeting on April 23, 2019.  OKI Staff gave presentations and technolgy demonstrations for an audience of local, state, and federal cooperators and USGS staff.

The USGS Ohio office will host their first cooperator meeting in 2020.

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USGS
Date Published: June 26, 2019
Status: Active

Information by Region-Indiana

  

Application to explore US Oil and Gas Assessments
Date Published: April 19, 2019
Status: Active

United States Assessments of Undiscovered Oil and Gas Resources

USGS Energy Resources Program provides periodic assessments of the oil and natural gas endowment of the United States and the World (click here for information about World Oil and Gas Assessments).  This website provides access to new, prioritized, assessment results and supporting data for the United States, as part...

Photo of a typical edge-of-field surface site
Date Published: April 12, 2019
Status: Active

Edge-of-field monitoring

Edge-of-field monitoring focuses on identifying and reducing agricultural sources of excess nutrients which can threaten the health of streams, rivers, and lakes. Edge-of-field monitoring assesses the quantity and quality of agricultural runoff and evaluates the effectiveness of conservation practices that aim to reduce nutrient loss.

Slideshow of Gary City Hall, before and after redevelopment with green infrastructure
Date Published: March 26, 2019
Status: Active

Assessing stormwater reduction using green infrastructure: Gary City Hall (Gary, Ind.)

The effectiveness of green infrastructure (rain gardens and decreased impervious surfaces) at reducing stormwater runoff is being assessed at a redevelopment project at Gary City Hall (Gary, Indiana). This study will evaluate pre- and post-construction hydrologic conditions using data collected by monitoring storm-sewer flow, groundwater levels, soil moisture, and meteorological conditions....

Contacts: David C Lampe, Brenda Scott-Henry
Photos show change in water clarity in agricultural runoff before and after a grassed waterway was installed
Date Published: March 23, 2019
Status: Active

Edge-of-field monitoring: Great Lakes Restoration Initiative (GLRI)

Great Lakes Restoration Initiative edge-of-field monitoring focuses on identifying and reducing agricultural sources of excess nutrients which threaten the health of the Great Lakes. The USGS supports these efforts by utilizing edge-of-field monitoring to assess the quantity and quality of agricultural runoff and evaluate conservation practices that aim to reduce sediment and nutrient loss....

2017 Midwest Spring Floods
Date Published: February 26, 2019
Status: Completed

2017 Midwest Spring Floods

Learn more about USGS flood activities related to the 2017 Midwest Spring Floods that occurred across large portions of Missouri, Illinois, Indiana, Ohio, Oklahoma, and Arkansas in late April and early May, 2017.

WY2015 cumulative streamflow graph for Elkhorn Creek near Frankfort KY
Date Published: February 26, 2019
Status: Completed

Summer 2015 Central Floods

Learn more about USGS flood activities related to the Summer 2015 Central Floods that occured when heavy rains caused flooding in four states in the central U.S.

May-June 2013 Midwest floods
Date Published: February 25, 2019
Status: Completed

May-June 2013 Midwest Floods

Learn more about USGS flood activities related to the May-June 2013 Midwest Floods.

April-May 2013 Midwest floods
Date Published: February 25, 2019
Status: Completed

April-May 2013 Midwest Floods

Learn more about USGS flood activities related to the April-May 2013 Midwest Floods caused by heavy rainfall and late snow-melt in six states.

Photo of Gary City Hall redevelopment including rain garden
Date Published: February 25, 2019
Status: Active

Urban Waters Federal Partnership—Little Calumet River (Northwest Indiana)

The USGS works with a wide range of cooperators to investigate many aspects of water quality. The newly integrated USGS Ohio-Kentucky-Indiana Water Science Center is assisting in furthering urban water-quality research in Northwest Indiana.

Contacts: Paul Buszka
Province 5066 Cincinnati Arch, National Oil and Gas Assessments
Date Published: December 7, 2018

Cincinnati Arch Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Cincinnati Arch Province (5066) :

 

Province 5064, Illinois Basin, Oil and Gas Assessments
Date Published: November 30, 2018

Illinois Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered continuous oil and gas resources of the  Illinois Basin Province 5064:

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Water Alert map screenshot
March 5, 2019

The U.S. Geological Survey WaterAlert service sends e-mail or text (SMS) messages when certain parameters, as measured by a USGS real-time data-collection station, exceed user-definable thresholds. The development and maintenance of the WaterAlert system is supported by the USGS and its partners, including numerous federal, state, and local agencies.

NWIS Mapper screenshot
March 5, 2019

The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

USGS
January 1, 2019

Regional grid files and 3D voxel models were used to study crustal architecture beneath the Southern Midcontinent (USA) by McCafferty and others (2019). The study covered a rectangular, multi-state area of 924 by 924 kilometers centered on Missouri, and a corresponding volume extending from the topographic surface to a depth of 50 kilometers below sea level. The grid files consist of surface gri

Image of data download web page
December 6, 2018

GIS Data for Cincinnati Arch Oil and Gas Assessments

Image of data download web page
November 30, 2018

GIS Data for Illinois Basin Oil and Gas Assessments 

Image of data download web page
November 30, 2018

GIS Data for Michigan Basin Oil and Gas Assessments 

Interactive map and chart highlighting USGS Domestic Continuous (Unconventional) Oil & Gas Assessments, 2000-Present
August 28, 2018

Interactively explore assessment summary information for continuous (unconventional) assessments conducted at the USGS from 2000-2018. The assessment results data used to generate this visualization can be downloaded here in Excel Format.  These data represent all assessment results for Continuous Assessments only from 2000-2018.

Boulders in stream
September 27, 2017

Streamflow Conditions: Ohio || Kentucky || Indiana

Groundwater Conditions: Ohio || Kentucky || Indiana

Water-Quality Conditions: Ohio || Kentucky || Indiana

Lakes and Reservoirs: Ohio || Kentucky || Indiana

Climate: Ohio

Application screenshot thumbnail
September 1, 2017

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

Example visualization from MODFLOW model output
April 19, 2017

MODFLOW is the USGS's three-dimensional (3D) finite-difference groundwater model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.

SPARROW graphic
April 19, 2017

SPARROW (SPAtially-Referenced Regression On Watershed attributes), is watershed based and designed for use in predicting long-term average values of water characteristics, such as concentrations and amounts of selected constituents that are delivered to downstream receiving waters.

Map of the states that have StreamStats availability
April 19, 2017

StreamStats is a Web application that incorporates a Geographic Information System (GIS) to provide users with access to an assortment of analytical tools that are useful for a variety of water-resources planning and management purposes, and for engineering and design purposes.

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Western Lake Erie Basin (WLEB) watersheds of Ohio and Indiana showing the USGS monitoring stations
March 22, 2019

Western Lake Erie Basin (WLEB) projects map depicts the sites and watersheds, as well as the data for each site through the interactive map.

USGS Streamflow and water-quality data including nutrient and sediment concentrations and daily, monthly, and annual loads are available on NWISWeb.

Application to explore US Oil and Gas Assessments
March 19, 2019

This map shows the provinces assessed by the USGS for undiscovered oil and gas resources. 

Screenshot of the FishVis mapper
November 19, 2016

The FishVis Mapper is the product of an Upper Midwest and Great Lakes LCC project, “A Regional Decision Support Tool for Identifying Vulnerabilities of Riverine Habitat and Fishes to Climate Change” that developed an approach for predicting fish species occurrence under current climate conditions and project how fish species occurrence may change under future climate conditions.

map of the ground water sites in the Louisville aquifer
June 15, 2016

The alluvial aquifer at Louisville, Kentucky, lies in a valley eroded by glacial melt-water that was later partly filled with outwash sand and gravel deposits. To monitor the groundwater levels, twenty-eight existing wells were incorporated into an observation well network, which is measured quarterly. Hydrographs from the continuous recorder wells depict the trends in the groundwater levels.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

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Year Published: 2019

Estimating potential wetland extent along selected river reaches in Indiana using streamflow statistics and flood-inundation mapping techniques

In this study potential wetland extents were estimated for 12 river reaches covering about 750 river miles in Indiana and parts of Illinois and Ohio. The study was completed by the U.S. Geological Survey in cooperation with the U.S. Department of Agriculture, Natural Resources Conservation Service. This study follows and adds to the work completed...

Fowler, Kathleen K.; Sperl, Benjamin J.; Kim, Moon H.
Fowler, K.K., Sperl, B.J., and Kim, M.H., 2019, Estimating potential wetland extent along selected river reaches in Indiana using streamflow statistics and flood-inundation mapping techniques: U.S. Geological Survey Scientific Investigations Report 2019–5063, 12 p., https://doi.org/10.3133/sir20195063.

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Year Published: 2019

Development of a flood-inundation map library and precipitation-runoff modeling for the Clear Fork Mohican River in and near Bellville, Ohio

The U.S. Geological Survey (USGS), in cooperation with the Muskingum Watershed Conservancy District, led hydrologic and hydraulic analyses within the Clear Fork Mohican River Basin in and near Bellville, Ohio. The analyses included the development of digital flood-inundation maps for an approximately 2.5-mile reach of the Clear Fork Mohican River...

Ostheimer, Chad J.; Huitger, Carrie A.
Ostheimer, C.J., and Huitger, C.A., 2019, Development of a flood-inundation map library and precipitation-runoff modeling for the Clear Fork Mohican River in and near Bellville, Ohio: U.S. Geological Survey Scientific Investigations Report 2019–5017, 34 p., including 1 appendix, https://doi.org/10.3133/sir20195017.

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Year Published: 2019

Hydrologic and hydraulic analyses of selected streams in Richland County, Ohio

Hydrologic and hydraulic analyses were done for selected reaches of Clear Fork Mohican River and Cedar Fork in Richland County, Ohio. To update and expand a portion of the Federal Emergency Management Agency detailed Flood Insurance Study, the U.S. Geological Survey (USGS) and the Muskingum Watershed Conservancy District initiated a cooperative...

Ostheimer, Chad J.
Ostheimer, C.J., 2019, Hydrologic and hydraulic analyses of selected streams in Richland County, Ohio: U.S. Geological Survey Scientific Investigations Report 2019–5011, 18 p., https://doi.org/10.3133/sir20195011.

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Year Published: 2019

Regression models for estimating sediment and nutrient concentrations and loads at the Kankakee River, Shelby, Indiana, December 2015 through May 2018

The Kankakee River in northern Indiana flows through the area once known as the Grand Marsh. Beginning in the 1860s, anthropogenic changes to the river within Indiana resulted in downstream flooding and additional transport of sediment and nutrients. In 2015, the U.S. Geological Survey, in cooperation with the Indiana Department of Environmental...

Lathrop, Timothy R.; Bunch, Aubrey R.; Downhour, Myles S.
Lathrop, T.R., Bunch, A.R., and Downhour, M.S., 2019, Regression models for estimating sediment and nutrient concentrations and loads at the Kankakee River, Shelby, Indiana, December 2015 through May 2018: U.S. Geological Survey Scientific Investigation Report 2019–5005, 13 p., https://doi.org/10.3133/sir20195005.

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Year Published: 2019

Delineation of tile-drain networks using thermal and multispectral imagery—Implications for water quantity and quality differences from paired edge-of-field sites

As part of the Great Lakes Restoration Initiative, paired edge-of-field sites were established in high priority subwatersheds to assess the effectiveness of agricultural management practices. One pairing was in Black Creek, a tributary to the Maumee River and Lake Erie. These fields were paired because of similarity in soils, topography, and...

Williamson, Tanja N.; Dobrowolski, Edward G.; Meyer, Shawn M.; Frey, Jeffrey W.; Allred, Barry J.

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Year Published: 2019

Sensitivity of streamflow simulation in the Delaware River Basin to forecasted land‐cover change for 2030 and 2060

In order to simulate the potential effect of forecasted land‐cover change on streamflow and water availability, there has to be confidence that the hydrologic model used is sensitive to small changes in land cover (<10%) and that this land‐cover change exceeds the inherent uncertainty in forecasted conditions. To investigate this, a 26‐year...

Williamson, Tanja N.; Claggett, Peter

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Year Published: 2019

Mixed-chemical exposure and predicted effects potential in wadeable southeastern USA streams

Complex chemical mixtures have been widely reported in larger streams but relatively little work has been done to characterize them and assess their potential effects in headwaterstreams. In 2014, the United States Geological Survey (USGS) sampled 54 Piedmont streams over ten weeks and measured 475 unique organic compounds...

Bradley, Paul M.; Journey, Celeste A.; Berninger, Jason P.; Button, Daniel T.; Clark, Jimmy M.; Corsi, Steven R.; DeCicco, Laura A.; Hopkins, Kristina G.; Huffman, Bradley J.; Nakagaki, Naomi; Norman, Julia E.; Nowell, Lisa H.; Qi, Sharon L.; Van Metre, Peter C.; Waite, Ian R.

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Year Published: 2019

Water-quality trends in U.S. rivers, 2002 to 2012: Relations to levels of concern

Effective management and protection of water resources relies upon understanding how water-quality conditions are changing over time. Water-quality trends for ammonia, chloride, nitrate, sulfate, total dissolved solids (TDS), total nitrogen (TN) and total phosphorus (TP) were assessed at 762 sites located in the conterminous United...

Shoda, Megan E.; Sprague, Lori A.; Murphy, Jennifer C.; Riskin, Melissa L.
Shoda, M.E., Sprague, L.A., Murphy, J.C., and Riskin, M.L., 2018, Water-quality trends in U.S. rivers, 2002 to 2012: Relations to levels of concern. Science of the Total Environment 650 (2019), p. 2314-2324. doi.org/10.1016/j.scitotenv.2018.09.377

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Year Published: 2018

Flood-inundation maps for the Salamonie River at Portland, Indiana

Digital flood-inundation maps for a 6.5-mile reach of the Salamonie River at Portland, Indiana, were created by the U.S. Geological Survey (USGS) in cooperation with the Indiana Department of Transportation. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science website at https://water.usgs.gov/osw/...

Strauch, Kellan R.
Strauch, K.R., 2018, Flood-inundation maps for the Salamonie River at Portland, Indiana: U.S. Geological Survey Scientific Investigations Report 2018–5132, 9 p., https://doi.org/10.3133/sir20185132.

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Year Published: 2018

U.S. Geological Survey (USGS) water-use websites

Explore U.S. Geological Survey (USGS) water-use websites to learn how and where the Nation's water use has changed over time!  Learn how to find and access USGS water-use data shown in maps, graphs, visualizations, and information products. Gain a better understanding of water-use terms and USGS educational resources. Learn how...

Shaffer, Kimberly; Rowland, Kathleen M.; Sargent, B. Pierre
Shaffer, K., Sargent, B.P., and Rowland, K.M., 2018, U.S. Geological Survey (USGS) water-use websites: U.S. Geological Survey Fact Sheet 2018–3044, 2 p., https://doi.org/10.3133/fs20183044.

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Year Published: 2018

Baseline water quality of an area undergoing shale-gas development in the Muskingum River watershed, Ohio, 2015–16

In 2015–16, the U.S. Geological Survey, in cooperation with the Muskingum Watershed Conservancy District, led a study to assess baseline (2015–16) surface-water quality in six lake drainage basins within the Muskingum River watershed that are in the early years of shale-gas development. In 2015, 9 of the 10 most active counties in Ohio for oil and...

Covert, S. Alex.; Jagucki, Martha L.; Huitger, Carrie A.
Covert, S.A., Jagucki, M.L., and Huitger, C., 2018, Baseline water quality of an area undergoing shale-gas development in the Muskingum River watershed, Ohio, 2015–16: U.S. Geological Survey Scientific Investigations Report 2018–5113, 129 p., https://doi.org/10.3133/sir20185113.

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Year Published: 2018

Flood-inundation maps for the North Fork Kentucky River at Hazard, Kentucky

Digital flood-inundation maps for a 7.1-mile reach of the North Fork Kentucky River at Hazard, Kentucky (Ky.), were created by the U.S. Geological Survey (USGS) in cooperation with the Kentucky Silver Jackets and the U.S. Army Corps of Engineers Louisville District. The flood-inundation maps, which can be accessed through the USGS Flood Inundation...

Boldt, Justin A.; Lant, Jeremiah G.; Kolarik, Nicholas E.
Boldt, J.A., Lant, J.G., and Kolarik, N.E., 2018, Flood-inundation maps for the North Fork Kentucky River at Hazard, Kentucky: U.S. Geological Survey Scientific Investigations Report 2018-5122, 12 p., https://doi.org/10.3133/sir20185122.

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Ohio River at Ironton, OH - tower walkway
July 15, 2019

Ohio River at Ironton, OH - tower walkway

Ohio River at Ironton, OH - tower walkway

Cuyahoga River at Independence OH - 2018 high water mark
May 30, 2019

Cuyahoga River at Independence OH - 2018 high water mark

Cuyahoga River at Independence OH - 2018 high water mark

Cuyahoga River at Independence OH - flood water in gage house
May 30, 2019

Cuyahoga River at Independence OH - flood water in gage house

Cuyahoga River at Independence OH - flood water in gage house

Eagle Creek at Zionsville, IN site
May 17, 2019

Eagle Creek at Zionsville, IN

Eagle Creek at Zionsville, IN

Eagle Creek at Zionsville, IN
May 2, 2019

Eagle Creek at Zionsville, IN downstream of gage

Eagle Creek at Zionsville, IN downstream of gage

Eagle Creek at Zionsville, IN
May 2, 2019

Eagle Creek at Zionsville, IN

Eagle Creek at Zionsville, IN - low flow

Chris Kephart - OKI 2019 Cooperator Meeting
April 18, 2019

Chris Kephart - OKI 2019 Cooperator Meeting

Chris Kephart - OKI 2019 Cooperator Meeting. Chris gave a presentation titled "OKI Water Microbiology Laboratory: Capabilities and Current Studies".

Chris Kephart - OKI Water Microbiology Laboratory
April 18, 2019

Chris Kephart - OKI Water Microbiology Laboratory

Chris Kephart - OKI Water Microbiology Laboratory. Chris gave a presentation at the OKI 2019 Cooperator Meeting titled "OKI Water Micorbiology Laboratory: Capabilities and current studies: Learn about the latest technology and science being employed by the OKI WSC. Chris also gave a hand-on demonstration titled "Learn about qPCR and more from the OKI WSC's microbiology lab

...
Neal Craig - OKI 2019 Cooperator Meeting
April 18, 2019

Neal Craig - OKI 2019 Cooperator Meeting

Neal Craig - OKI 2019 Cooperator Meeting. Neal gave a demonstration on Flood measurements showing how to measure floodwaters with old and new technologies.

Angie Crain - Super Gages/Mobile Super Gages
April 18, 2019

Angie Crain - Super Gages/Mobile Super Gages

Angie Crain - Super Gages/Mobile Super Gages. Angie gave a presentation on super gages at the OKI 2109 Cooperator meeting. She also gave a hnads-on demonstration regarding how to measure/sample water quality using the "clean hands/dirty hands" technique.

Neal Craig - OKI 2019 Cooperator Meeting
April 18, 2019

Neal Craig - OKI 2019 Cooperator Meeting

Neal Craig - OKI 2019 Cooperator Meeting. Neal gave a demonstration on Flood measurements showing how to measure floodwaters with old and new technologies.

Chris Kephart - OKI Water Microbiology Laboratory
April 18, 2019

Chris Kephart - OKI Water Microbiology Laboratory

Chris Kephart - OKI Water Microbiology Laboratory. Chris gave a presentation at the OKI 2019 Cooperator Meeting titled "OKI Water Micorbiology Laboratory: Capabilities and current studies: Learn about the latest technology and science being employed by the OKI WSC. Chris also gave a hand-on demonstration titled "Learn about qPCR and more from the OKI WSC's microbiology lab

...
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Xan Fredericks
May 30, 2019

Xan Fredericks, Lidar Coordinator for the Coastal/Marine Hazards and Resources Program and the USGS Co-Chair for the Florida Coastal Mapping Program, will present "A Federal-State Partnership for Mapping Florida's Coast and Seafloor" at the 20th annual Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX) Airborne Coastal Mapping and Charting Technical Workshop.

Neal Craig Technology demonstration at the OKI 2019 cooperator meeting
May 1, 2019

The USGS Kentucky office hosted their third annual cooperator meeting on April 18, 2019 and the Indiana office hosted their second cooperator meeting on April 23, 2019.  OKI Staff gave presentations and technolgy demonstrations for an audience of local, state, and federal cooperators and USGS staff.

The USGS Ohio office will host their first cooperator meeting in 2020.

Ohio-Kentucky-Indiana Newsletter Logo
March 27, 2019

Science highlights included in this issue are Mobile SuperGage Float Trip, “River stage” does not necessarily
mean “River depth”, Interagency Workshop to Develop Predictive Models for Recreational and Drinking-Water Treatment Plant Sites, Introducing The Next Generation of USGS Water Data for the Nation, and Streamgage Changes to the Ohio-Kentucky-Indiana Monitoring Network. 

Thank You Notes From Third Grade Students
November 29, 2018

Kasia Kelly (GLSC, Chesterton, Indiana) gave a presentation on aquatic invasive species of the Great Lakes region for first and third grade students from Discovery Charter School in Porter, Indiana, on November 8, 2018. 

Lake Michigan Ecological Research Station
October 29, 2018

Porter County Soil & Water Conservation District received a District Showcase Award as an outstanding district in Indiana.

Lake Michigan Ecological Research Station
October 9, 2018

Students from Indiana University Northwest visited the Lake Michigan Ecological Research Station (GLSC, Chesterton, Indiana).

Ohio-Kentucky-Indiana Newsletter Logo
September 1, 2018

The Summer 2018 edition of the Ohio-Kentucky-Indiana Water Science Center Newsletter highlights science and selected OKI WSC staff. Science highlights include Nowcast, monitoring in the Western Lake Erie Basin, School Branch watershed monitoring, and  Spring flooding in the tri-state area. Scientists included are Greg Koltun, Thomas Harris, Travis Cole, Catherine Fargen, and Shawn LeMaster.

Ohio-Kentucky-Indiana Newsletter Logo
March 12, 2018

Thanks for viewing this first version of the Ohio-Kentucky-Indiana Water Science Center Newsletter. I use this format a few times a year to highlight U.S. Geological Survey (USGS) activities and water-related science going on at the Ohio-Kentucky-Indiana Water Science Center (OKI WSC). 

 

Photo of a young girl drinking water, which likely originated from groundwater sources. 
December 7, 2017

A regional assessment of untreated groundwater in the Cambrian-Ordovician aquifer system, which includes parts of Minnesota, Wisconsin, Michigan, Iowa, Illinois, Missouri and Indiana, is now available from the U.S. Geological Survey.

Image shows a geologic map of the Lower 48
August 21, 2017

A carbonatite here, a glacial moraine there, a zig-zagging fault or two, even a behemoth of a batholith. The geology of the 50 States is an enormous patchwork of varied forms, beautiful in their variance but challenging to present as a single map.

Lake Michigan at Sunset
August 16, 2017

Invasive mussels and less nutrients from tributaries have altered the Lake Michigan ecosystem making it more conducive to the stocking of lake trout and steelhead than Chinook salmon, according to a recent U.S. Geological Survey and Michigan State University study.

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