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Rivers, Streams and Lakes

Climate change is resulting in shifts in temperature, precipitation, and seasonal streamflow regimes across North America, impacting water resources for plant, wildlife, and human communities. Learn more about what CASC scientists are doing to inform water resource and fisheries managers through the projects below.

Filter Total Items: 227

Effects of global change on alpine and subalpine ecosystems

Atmospheric nitrogen deposition, climate change and recreation are rapidly altering high elevation ecosystems. This project will evaluate long-term biogeochemical, hydrological, and ecological trends in Rocky Mountain National Park to understand the causes and rates of change in alpine and subalpine waters, soils, and vegetation. Resource managers of high-elevation, protected lands can use the...
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Effects of global change on alpine and subalpine ecosystems

Atmospheric nitrogen deposition, climate change and recreation are rapidly altering high elevation ecosystems. This project will evaluate long-term biogeochemical, hydrological, and ecological trends in Rocky Mountain National Park to understand the causes and rates of change in alpine and subalpine waters, soils, and vegetation. Resource managers of high-elevation, protected lands can use the...
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After the Dams: Fire Impacts and Restoration Opportunities for a Culturally Important Klamath River Willow

Project Overview The sandbar willow of the Klamath River is used within the Karuk Tribe’s ongoing cultural practices of basketweaving. The willow has been threatened by intensifying fire and dams, but restoration and the recent historical dam removals provide an opportunity to increase the quantity, quality, and access to this important resource. Researchers supported by this Southwest...
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After the Dams: Fire Impacts and Restoration Opportunities for a Culturally Important Klamath River Willow

Project Overview The sandbar willow of the Klamath River is used within the Karuk Tribe’s ongoing cultural practices of basketweaving. The willow has been threatened by intensifying fire and dams, but restoration and the recent historical dam removals provide an opportunity to increase the quantity, quality, and access to this important resource. Researchers supported by this Southwest CASC projec
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Designing Climate-Resilient Stormwater Management in Northeastern US Cities to Support Stream Ecosystems

Current stormwater management infrastructure and strategies in the northeastern US are built around historical weather data and not the weather that is expected with climate change, like more frequent extreme rainfall. This matters because stormwater can introduce pollution to streams and can cause flooding. Researchers supported by this Northeast CASC project will combine climate data...
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Designing Climate-Resilient Stormwater Management in Northeastern US Cities to Support Stream Ecosystems

Current stormwater management infrastructure and strategies in the northeastern US are built around historical weather data and not the weather that is expected with climate change, like more frequent extreme rainfall. This matters because stormwater can introduce pollution to streams and can cause flooding. Researchers supported by this Northeast CASC project will combine climate data, stormwater
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Does Less Ice Cover Lead to More Turbulent Overwinter Conditions on Great Lakes Fish Spawning Reefs?

Project Overview Declining winter ice cover in the Great Lakes can affect how winds and waves influence coldwater fish reproduction on reefs, as ice cover may shield fish from these forces. Researchers supported by this Midwest CASC project will measure water movement and ice cover in Lake Erie to model future scenarios, helping fishery managers in the region make habitat restoration and...
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Does Less Ice Cover Lead to More Turbulent Overwinter Conditions on Great Lakes Fish Spawning Reefs?

Project Overview Declining winter ice cover in the Great Lakes can affect how winds and waves influence coldwater fish reproduction on reefs, as ice cover may shield fish from these forces. Researchers supported by this Midwest CASC project will measure water movement and ice cover in Lake Erie to model future scenarios, helping fishery managers in the region make habitat restoration and fish stoc
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Ghuts, Grit, and Gills: Aquatic Data Synthesis for Climate Adaptation in the US Virgin Islands

The US Virgin Islands are vulnerable to sea level rise, intense storms, and unpredictable rainfall brought by climate change. These changes influence the health of freshwater streams (known as “ghuts”), sedimentation, erosion and water quality (“grit”), as well as aquatic communities and ecosystems (“gills”) that are unique to the islands and important for indigenous peoples’ heritage...
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Ghuts, Grit, and Gills: Aquatic Data Synthesis for Climate Adaptation in the US Virgin Islands

The US Virgin Islands are vulnerable to sea level rise, intense storms, and unpredictable rainfall brought by climate change. These changes influence the health of freshwater streams (known as “ghuts”), sedimentation, erosion and water quality (“grit”), as well as aquatic communities and ecosystems (“gills”) that are unique to the islands and important for indigenous peoples’ heritage, local fishe
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Identifying the Environmental Limits of Aquatic Species in Prairie Streams to Build Climate Resilience

Project Overview Climate change and human activities are threatening many sensitive aquatic species in prairie streams across the Great Plains region. Researchers supported by this North Central CASC project will combine and analyze data collected independently by Great Plains states to identify thresholds of environmental change that may lead to species loss and changes in aquatic...
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Identifying the Environmental Limits of Aquatic Species in Prairie Streams to Build Climate Resilience

Project Overview Climate change and human activities are threatening many sensitive aquatic species in prairie streams across the Great Plains region. Researchers supported by this North Central CASC project will combine and analyze data collected independently by Great Plains states to identify thresholds of environmental change that may lead to species loss and changes in aquatic communities. Th
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Impacts to Ecosystems and Fisheries in Northwest Alaska from “Rusting Rivers”

Project Overview In Northwest Alaska, “rusting rivers” are becoming increasingly apparent as climate change causes ancient spring seeps to re-emerge after permafrost melts. While they have become more common over the past few years, very little is understood about their impacts on stream food webs. Researchers supported by this Alaska CASC project will bridge the knowledge gap by...
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Impacts to Ecosystems and Fisheries in Northwest Alaska from “Rusting Rivers”

Project Overview In Northwest Alaska, “rusting rivers” are becoming increasingly apparent as climate change causes ancient spring seeps to re-emerge after permafrost melts. While they have become more common over the past few years, very little is understood about their impacts on stream food webs. Researchers supported by this Alaska CASC project will bridge the knowledge gap by providing import
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Leveraging Existing Data to Assess the Vulnerability of Native Salmonid Populations in the Greater Yellowstone Area

Project Overview: Native Yellowstone cutthroat trout and mountain whitefish in the Greater Yellowstone Ecosystem (GYA) are ecologically and socio-economically important species, but are threatened by drought, rising water temperatures, habitat loss, and non-native species. Researchers supported by this North Central CASC project will use climate data and extensive population records to...
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Leveraging Existing Data to Assess the Vulnerability of Native Salmonid Populations in the Greater Yellowstone Area

Project Overview: Native Yellowstone cutthroat trout and mountain whitefish in the Greater Yellowstone Ecosystem (GYA) are ecologically and socio-economically important species, but are threatened by drought, rising water temperatures, habitat loss, and non-native species. Researchers supported by this North Central CASC project will use climate data and extensive population records to assess the
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Mapping Community Experiences and Concerns Related to Drying Lakes in Arid Climates

Declining water levels in the Great Salt Lake are part of a larger trend of decreasing water availability in the Southwestern U.S. that presents significant challenges for people, animals, and ecosystems. One challenge is that as some lakes dry, newly exposed sediment containing heavy metals can become toxic dust that blows into populated areas. Increased air pollution and other effects...
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Mapping Community Experiences and Concerns Related to Drying Lakes in Arid Climates

Declining water levels in the Great Salt Lake are part of a larger trend of decreasing water availability in the Southwestern U.S. that presents significant challenges for people, animals, and ecosystems. One challenge is that as some lakes dry, newly exposed sediment containing heavy metals can become toxic dust that blows into populated areas. Increased air pollution and other effects of drying
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Mapping Habitat Connectivity and Climate Refugia in Headwater Ecosystems to Support Amphibian Conservation

Forests in the Pacific Northwest support an extensive network of headwater streams and critical habitats for over 50 amphibian species, but face challenges from historical resource extraction, forest management, and climate change. Researchers supported by this Northwest CASC project will identify and map climate refugia to guide conservation strategies for at-risk amphibians, producing...
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Mapping Habitat Connectivity and Climate Refugia in Headwater Ecosystems to Support Amphibian Conservation

Forests in the Pacific Northwest support an extensive network of headwater streams and critical habitats for over 50 amphibian species, but face challenges from historical resource extraction, forest management, and climate change. Researchers supported by this Northwest CASC project will identify and map climate refugia to guide conservation strategies for at-risk amphibians, producing tools and
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Small Prairie Stream Health Within Fort Berthold Indian Reservation

Project Overview The Fort Berthold Indian Reservation faces challenges in maintaining stream health due to recent extreme weather events, oil and gas development, and row crop expansion. Researchers supported by this North Central CASC project will assess how these changes affect stream health while providing career development for undergraduate researchers from Nueta Hidatsa Sahnish...
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Small Prairie Stream Health Within Fort Berthold Indian Reservation

Project Overview The Fort Berthold Indian Reservation faces challenges in maintaining stream health due to recent extreme weather events, oil and gas development, and row crop expansion. Researchers supported by this North Central CASC project will assess how these changes affect stream health while providing career development for undergraduate researchers from Nueta Hidatsa Sahnish College (NHSC
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A Decision-Support Tool for Invasive Plant Management Under Fluctuating Great Lakes Water Levels

Water levels in the Great Lakes are fluctuating in ways that we have not seen in the past, with both historically low- and high-water levels occurring in the last decade. Expectations are that larger and more frequent water-level fluctuations will occur in response to climate change. The increased variability in lake levels has implications for the management of invasive plants found in...
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A Decision-Support Tool for Invasive Plant Management Under Fluctuating Great Lakes Water Levels

Water levels in the Great Lakes are fluctuating in ways that we have not seen in the past, with both historically low- and high-water levels occurring in the last decade. Expectations are that larger and more frequent water-level fluctuations will occur in response to climate change. The increased variability in lake levels has implications for the management of invasive plants found in the coasta
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