Boardwalk leading towards Iguazu Falls viewpoint. Iguazu Falls on the border of Brazil and Argentina. A river in the foreground is bordered by green vegetation, with waterfalls in background.
Joel T Groten
Joel Groten is a Hydrologist with the Upper Midwest Water Science Center.
He has a M.S. in Water Resources Science from the University of Minnesota and studied karst groundwater and surface water interactions in southeastern Minnesota under Dr. E. Calvin Alexander. Joel serves as a principal investigator related to USGS nutrient and sediment studies. In this capacity, he provides project oversight, technical assistance, teaching, training, data analysis, and reporting in support of projects for the Minnesota Pollution Control Agency, Minnesota Department of Natural Resources, U.S. Army Corps of Engineers, Lower Minnesota Watershed District, Rice Creek Watershed District, and the Institute for Technological Research in São Paulo, Brazil. These projects vary in scope and relate to continuous data acquisition in real-time, aquatic habitat, TMDL studies, stream restoration, geomorphology, nutrient and sediment budgets, and flood retention and diversion. Joel also is responsible for research and implementation of new technologies to improve understanding of nitrate and sediment sources, fate, and transport mechanisms.
Non-USGS Publications
Groten, J.T., and Alexander, E. C 2015, Karst Hydrogeologic Investigation of Trout Brook: Sinkholes and the Engineering and Environmental Impacts of Karst: Proceedings of the Fourteenth Multidisciplinary Conference, 1-7. http://dx.doi.org/10.5038/9780991000951.1012.
Luhmann, A. J., Covington, M. D., Alexander, S. C., Chai, S. Y., Schwartz, B. F., Groten, J. T., & Alexander, E. C., 2013, Comparison of discharge, chloride, temperature, uranine, δd, and suspended sediment responses from a multiple tracer test in karst: Carbonates and Evaporites, 28(1-2), 191-199. https://doi.org/10.1007/s13146-013-0127-8.
Groten, J.T., and Alexander, E. C., 2013, Karst Hydrogeologic Investigation of Trout Brook, Dakota County, Minnesota: Retrieved from the University of Minnesota Digital Conservancy, http://hdl.handle.net/11299/145674.
Luhmann, A. J., Covington, M. D., Alexander, S. C., Chai, S. Y., Schwartz, B. F., Groten, J. T., and Alexander Jr., E. C., 2012, Comparing conservative and nonconservative tracers in karst and using them to estimate flow path geometry: Journal of Hydrology, 448–449, 201–211, https://doi.org/10.1016/j.jhydrol.2012.04.044.
Groten, J.T., and Alexander, E. C, 2012, Hydrogeologic Monitoring at University of Minnesota Outreach, Research and Educational Park (UMore Park), 2011: Retrieved from the University of Minnesota Digital Conservancy, http://hdl.handle.net/11299/145679.
Science and Products
Lake Superior Beach Nourishment and Near-Shore Bathymetric Surveys of Minnesota Point at Duluth, Minnesota
The shoreline, beaches, and infrastructure in Duluth, Minnesota have been degraded along the Minnesota Point barrier island because of high water levels and heavy wave action. The U.S. Army Corps of Engineers (USACE) is exploring the beneficial use of dredge material for beach nourishment on the Lake Superior side of the barrier island.
Measuring Suspended-Sediment Concentrations, Grain Sizes and Bedload using Acoustic Doppler Velocity Meters and Echologgers in the Lower Chippewa River, Wisconsin
Sediment from the Chippewa River deposits in the Mississippi River navigation channel, sometimes disrupting commercial barge traffic and resulting in expensive and ecologically disruptive dredging operations. The USGS is using new applications of hydroacoustic technologies to better understand sediment transport in the Chippewa River and associated effects on commercial navigation.
Sediment Acoustics
The U.S. Geological Survey recognizes the need to provide sediment acoustic training and to develop standardized techniques and practices.
Iguazu Falls boardwalk
Boardwalk leading towards Iguazu Falls viewpoint. Iguazu Falls on the border of Brazil and Argentina. A river in the foreground is bordered by green vegetation, with waterfalls in background.
Iguazu Falls from above
Iguazu Falls view from above, on the border of Brazil and Argentina. Green vegetation surrounds the waterfalls.
Iguazu Falls view from above, on the border of Brazil and Argentina. Green vegetation surrounds the waterfalls.
Iguazu Falls
Iguazu Falls on the border of Brazil and Argentina. A rushing river in the foreground is bordered by green vegetation, with waterfalls in background.
Iguazu Falls on the border of Brazil and Argentina. A rushing river in the foreground is bordered by green vegetation, with waterfalls in background.
USGS and Itaipu Binacional staff from Paraguay and Brazil
A mix of twenty two USGS and Itaipu Binacional staff from Paraguay and Brazil at a meeting.
A mix of twenty two USGS and Itaipu Binacional staff from Paraguay and Brazil at a meeting.
Itaipu Binacional boat used for bathymetric surveys
Two scientists stand on and on shore near Itaipu Binacional boat used for bathymetric surveys.
Two scientists stand on and on shore near Itaipu Binacional boat used for bathymetric surveys.
Itaipu Binacional hydroelectric dam
View looking up at Itaipu Binacional hydroelectric dam and sign from below. The binational dam is located on the border of Brazil and Paraguay.
View looking up at Itaipu Binacional hydroelectric dam and sign from below. The binational dam is located on the border of Brazil and Paraguay.
Itaipu Binacional Dam spillway
Itaipu Binacional Dam spillway. The binational dam is located on the Parana River on the border of Brazil and Paraguay.
Itaipu Binacional Dam spillway. The binational dam is located on the Parana River on the border of Brazil and Paraguay.
USGS employees inside Itaipu Binational Dam on Parana River bottom
(L to R) USGS's Brian McCallum, Joel Groten, and Molly Wood inside Itaipu Binational dam and standing on the original Paraná River bottom on the border of Brazil and Paraguay.
(L to R) USGS's Brian McCallum, Joel Groten, and Molly Wood inside Itaipu Binational dam and standing on the original Paraná River bottom on the border of Brazil and Paraguay.
Itaipu Binacional hydroelectric dam control room
Person in hard hat looks through windows down into the Itaipu Binacional hydroelectric dam control room. The binational dam is located on the border of Brazil and Paraguay on the Parana River.
Person in hard hat looks through windows down into the Itaipu Binacional hydroelectric dam control room. The binational dam is located on the border of Brazil and Paraguay on the Parana River.
Itaipu Binacional Dam sign in front of spillway
Itaipu Binacional Dam sign in front of spillway. The binational dam is located on the Parana River between Brazil and Paraguay.
Itaipu Binacional Dam sign in front of spillway. The binational dam is located on the Parana River between Brazil and Paraguay.
Speakers who presented at United Nations 2023 Water Conference
Speakers who presented at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
Speakers who presented at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
Discussion between participants at United Nations 2023 Water Conference
Discussion between participants at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
Discussion between participants at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
UN Water Conference speakers
Speakers at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”. Hydrologist Joel Groten is third from left.
Speakers at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”. Hydrologist Joel Groten is third from left.
United Nations General Assembly
View of participants from behind looking forward in the United Nations general assembly at the United Nations 2023 Water Conference.
View of participants from behind looking forward in the United Nations general assembly at the United Nations 2023 Water Conference.
#WATERACTION sign at the United Nations 2023 Water Conference
#WATERACTION sign at the United Nations 2023 Water Conference. Large individual letter sign that states "#wateraction" with New York City skyline in background.
#WATERACTION sign at the United Nations 2023 Water Conference. Large individual letter sign that states "#wateraction" with New York City skyline in background.
United Nations Headquarters in New York City
United Nations Headquarters in New York City. View looking up at United Nations headquarters building with flags in foreground.
United Nations Headquarters in New York City. View looking up at United Nations headquarters building with flags in foreground.
Yellow sediment sampler suspended off side of boat in Manacapuru, Brazil
Yellow sediment sampler suspended off side of boat in Manacapuru, Amazon River Basin, Brazil, during a field trip with USGS and National Agency for Water and Basic Sanitation (ANA) scientists (Brazil) and Geological Survey of Brazil (SGB-CPRM).
ANA (Agencia Nacional De Aguas E Saneamento Basico)
SGB-CPRM (Geological Survey of Brazil)
Yellow sediment sampler suspended off side of boat in Manacapuru, Amazon River Basin, Brazil, during a field trip with USGS and National Agency for Water and Basic Sanitation (ANA) scientists (Brazil) and Geological Survey of Brazil (SGB-CPRM).
ANA (Agencia Nacional De Aguas E Saneamento Basico)
SGB-CPRM (Geological Survey of Brazil)
USGS, ANA and SGB-CPRM scientists in front of research vessel in Amazon River Basin
USGS, ANA and Geological Survey of Brazil (SGB-CPRM) staff standing in front of an ANA/SBG-CPRM research vessel in the Amazon River basin in Manacapuru, Brazil to measure measure streamflow and sample suspended sediment.
SGB-CPRM (Geological Survey of Brazil)
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS, ANA and Geological Survey of Brazil (SGB-CPRM) staff standing in front of an ANA/SBG-CPRM research vessel in the Amazon River basin in Manacapuru, Brazil to measure measure streamflow and sample suspended sediment.
SGB-CPRM (Geological Survey of Brazil)
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil.
Top (L – R) ANA Scientists Vitor Saback, Brian McCallum, Mauricio Abijaodi
Bottom (L-R) USGS Hydrologists Travis Knight, Joel Groten, Filipe Sampaio
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil.
Top (L – R) ANA Scientists Vitor Saback, Brian McCallum, Mauricio Abijaodi
Bottom (L-R) USGS Hydrologists Travis Knight, Joel Groten, Filipe Sampaio
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil standing in front of flags
linkUSGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil, standing in front of three flags (L-R) American flag, Brazilian Flag, ANA logo flag.
(L-R) Mauricio Abijaodi, Brian McCallum, Filipe Sampaio, Joel Groten, Travis Knight, and Vitor Saback.
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil standing in front of flags
linkUSGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil, standing in front of three flags (L-R) American flag, Brazilian Flag, ANA logo flag.
(L-R) Mauricio Abijaodi, Brian McCallum, Filipe Sampaio, Joel Groten, Travis Knight, and Vitor Saback.
ANA (Agencia Nacional De Aguas E Saneamento Basico)
Monitoring Suspended Sediment and Flow along the Mississippi River: Episode 1
In this video segment, Physical Scientists from the U.S. Geological Survey (USGS) Lower Mississippi Gulf Water Science Center (LMGWSC) give an overview of USGS monitoring efforts along the Lower Mississippi River. General sampling logistics and monitoring frequencies are also shown.
In this video segment, Physical Scientists from the U.S. Geological Survey (USGS) Lower Mississippi Gulf Water Science Center (LMGWSC) give an overview of USGS monitoring efforts along the Lower Mississippi River. General sampling logistics and monitoring frequencies are also shown.
Science and Products
Lake Superior Beach Nourishment and Near-Shore Bathymetric Surveys of Minnesota Point at Duluth, Minnesota
The shoreline, beaches, and infrastructure in Duluth, Minnesota have been degraded along the Minnesota Point barrier island because of high water levels and heavy wave action. The U.S. Army Corps of Engineers (USACE) is exploring the beneficial use of dredge material for beach nourishment on the Lake Superior side of the barrier island.
Measuring Suspended-Sediment Concentrations, Grain Sizes and Bedload using Acoustic Doppler Velocity Meters and Echologgers in the Lower Chippewa River, Wisconsin
Sediment from the Chippewa River deposits in the Mississippi River navigation channel, sometimes disrupting commercial barge traffic and resulting in expensive and ecologically disruptive dredging operations. The USGS is using new applications of hydroacoustic technologies to better understand sediment transport in the Chippewa River and associated effects on commercial navigation.
Sediment Acoustics
The U.S. Geological Survey recognizes the need to provide sediment acoustic training and to develop standardized techniques and practices.
Iguazu Falls boardwalk
Boardwalk leading towards Iguazu Falls viewpoint. Iguazu Falls on the border of Brazil and Argentina. A river in the foreground is bordered by green vegetation, with waterfalls in background.
Boardwalk leading towards Iguazu Falls viewpoint. Iguazu Falls on the border of Brazil and Argentina. A river in the foreground is bordered by green vegetation, with waterfalls in background.
Iguazu Falls from above
Iguazu Falls view from above, on the border of Brazil and Argentina. Green vegetation surrounds the waterfalls.
Iguazu Falls view from above, on the border of Brazil and Argentina. Green vegetation surrounds the waterfalls.
Iguazu Falls
Iguazu Falls on the border of Brazil and Argentina. A rushing river in the foreground is bordered by green vegetation, with waterfalls in background.
Iguazu Falls on the border of Brazil and Argentina. A rushing river in the foreground is bordered by green vegetation, with waterfalls in background.
USGS and Itaipu Binacional staff from Paraguay and Brazil
A mix of twenty two USGS and Itaipu Binacional staff from Paraguay and Brazil at a meeting.
A mix of twenty two USGS and Itaipu Binacional staff from Paraguay and Brazil at a meeting.
Itaipu Binacional boat used for bathymetric surveys
Two scientists stand on and on shore near Itaipu Binacional boat used for bathymetric surveys.
Two scientists stand on and on shore near Itaipu Binacional boat used for bathymetric surveys.
Itaipu Binacional hydroelectric dam
View looking up at Itaipu Binacional hydroelectric dam and sign from below. The binational dam is located on the border of Brazil and Paraguay.
View looking up at Itaipu Binacional hydroelectric dam and sign from below. The binational dam is located on the border of Brazil and Paraguay.
Itaipu Binacional Dam spillway
Itaipu Binacional Dam spillway. The binational dam is located on the Parana River on the border of Brazil and Paraguay.
Itaipu Binacional Dam spillway. The binational dam is located on the Parana River on the border of Brazil and Paraguay.
USGS employees inside Itaipu Binational Dam on Parana River bottom
(L to R) USGS's Brian McCallum, Joel Groten, and Molly Wood inside Itaipu Binational dam and standing on the original Paraná River bottom on the border of Brazil and Paraguay.
(L to R) USGS's Brian McCallum, Joel Groten, and Molly Wood inside Itaipu Binational dam and standing on the original Paraná River bottom on the border of Brazil and Paraguay.
Itaipu Binacional hydroelectric dam control room
Person in hard hat looks through windows down into the Itaipu Binacional hydroelectric dam control room. The binational dam is located on the border of Brazil and Paraguay on the Parana River.
Person in hard hat looks through windows down into the Itaipu Binacional hydroelectric dam control room. The binational dam is located on the border of Brazil and Paraguay on the Parana River.
Itaipu Binacional Dam sign in front of spillway
Itaipu Binacional Dam sign in front of spillway. The binational dam is located on the Parana River between Brazil and Paraguay.
Itaipu Binacional Dam sign in front of spillway. The binational dam is located on the Parana River between Brazil and Paraguay.
Speakers who presented at United Nations 2023 Water Conference
Speakers who presented at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
Speakers who presented at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
Discussion between participants at United Nations 2023 Water Conference
Discussion between participants at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
Discussion between participants at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”.
UN Water Conference speakers
Speakers at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”. Hydrologist Joel Groten is third from left.
Speakers at United Nations 2023 Water Conference side event titled, “International and Transboundary Cooperation of Integrated Water Management: From Data Collection to Implementation”. Hydrologist Joel Groten is third from left.
United Nations General Assembly
View of participants from behind looking forward in the United Nations general assembly at the United Nations 2023 Water Conference.
View of participants from behind looking forward in the United Nations general assembly at the United Nations 2023 Water Conference.
#WATERACTION sign at the United Nations 2023 Water Conference
#WATERACTION sign at the United Nations 2023 Water Conference. Large individual letter sign that states "#wateraction" with New York City skyline in background.
#WATERACTION sign at the United Nations 2023 Water Conference. Large individual letter sign that states "#wateraction" with New York City skyline in background.
United Nations Headquarters in New York City
United Nations Headquarters in New York City. View looking up at United Nations headquarters building with flags in foreground.
United Nations Headquarters in New York City. View looking up at United Nations headquarters building with flags in foreground.
Yellow sediment sampler suspended off side of boat in Manacapuru, Brazil
Yellow sediment sampler suspended off side of boat in Manacapuru, Amazon River Basin, Brazil, during a field trip with USGS and National Agency for Water and Basic Sanitation (ANA) scientists (Brazil) and Geological Survey of Brazil (SGB-CPRM).
ANA (Agencia Nacional De Aguas E Saneamento Basico)
SGB-CPRM (Geological Survey of Brazil)
Yellow sediment sampler suspended off side of boat in Manacapuru, Amazon River Basin, Brazil, during a field trip with USGS and National Agency for Water and Basic Sanitation (ANA) scientists (Brazil) and Geological Survey of Brazil (SGB-CPRM).
ANA (Agencia Nacional De Aguas E Saneamento Basico)
SGB-CPRM (Geological Survey of Brazil)
USGS, ANA and SGB-CPRM scientists in front of research vessel in Amazon River Basin
USGS, ANA and Geological Survey of Brazil (SGB-CPRM) staff standing in front of an ANA/SBG-CPRM research vessel in the Amazon River basin in Manacapuru, Brazil to measure measure streamflow and sample suspended sediment.
SGB-CPRM (Geological Survey of Brazil)
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS, ANA and Geological Survey of Brazil (SGB-CPRM) staff standing in front of an ANA/SBG-CPRM research vessel in the Amazon River basin in Manacapuru, Brazil to measure measure streamflow and sample suspended sediment.
SGB-CPRM (Geological Survey of Brazil)
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil.
Top (L – R) ANA Scientists Vitor Saback, Brian McCallum, Mauricio Abijaodi
Bottom (L-R) USGS Hydrologists Travis Knight, Joel Groten, Filipe Sampaio
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil.
Top (L – R) ANA Scientists Vitor Saback, Brian McCallum, Mauricio Abijaodi
Bottom (L-R) USGS Hydrologists Travis Knight, Joel Groten, Filipe Sampaio
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil standing in front of flags
linkUSGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil, standing in front of three flags (L-R) American flag, Brazilian Flag, ANA logo flag.
(L-R) Mauricio Abijaodi, Brian McCallum, Filipe Sampaio, Joel Groten, Travis Knight, and Vitor Saback.
ANA (Agencia Nacional De Aguas E Saneamento Basico)
USGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil standing in front of flags
linkUSGS meeting with National Agency for Water and Basic Sanitation (ANA) scientists in Brazil, standing in front of three flags (L-R) American flag, Brazilian Flag, ANA logo flag.
(L-R) Mauricio Abijaodi, Brian McCallum, Filipe Sampaio, Joel Groten, Travis Knight, and Vitor Saback.
ANA (Agencia Nacional De Aguas E Saneamento Basico)
Monitoring Suspended Sediment and Flow along the Mississippi River: Episode 1
In this video segment, Physical Scientists from the U.S. Geological Survey (USGS) Lower Mississippi Gulf Water Science Center (LMGWSC) give an overview of USGS monitoring efforts along the Lower Mississippi River. General sampling logistics and monitoring frequencies are also shown.
In this video segment, Physical Scientists from the U.S. Geological Survey (USGS) Lower Mississippi Gulf Water Science Center (LMGWSC) give an overview of USGS monitoring efforts along the Lower Mississippi River. General sampling logistics and monitoring frequencies are also shown.