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Water, Coasts and Ice

Warming temperatures and shifting weather patterns are causing major changes in water and ice availability, sea levels, and aquatic nutrient cycles across the country. CASC-supported scientists are examining how water, ice, and coastal ecosystems and communities across the country are being affected by climate change. Explore our science on this topic below. 

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Protecting Cultural Resources in the Face of Climate Change

Climate change doesn’t just threaten our natural resources—it threatens our cultural resources, too. Cultural resources represent evidence of past human activity, such as archeological sites, or are of significance to a group of people traditionally associated with the resource, such as Native American ceremonial sites. Climate change is challenging the long-term persistence of many...
Protecting Cultural Resources in the Face of Climate Change

Protecting Cultural Resources in the Face of Climate Change

Climate change doesn’t just threaten our natural resources—it threatens our cultural resources, too. Cultural resources represent evidence of past human activity, such as archeological sites, or are of significance to a group of people traditionally associated with the resource, such as Native American ceremonial sites. Climate change is challenging the long-term persistence of many cultural
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River’s End: Mapping Patterns of Stream Drying in the Western United States

Water in the western United States is disappearing, and several states are facing severe water shortages as drought conditions worsen. Many streams are drying up, and there is growing concern that this trend will only continue as climate change produces warmer and drier conditions. The loss of stream ecosystems has far reaching ecological, social, and economic implications. Species that...
River’s End: Mapping Patterns of Stream Drying in the Western United States

River’s End: Mapping Patterns of Stream Drying in the Western United States

Water in the western United States is disappearing, and several states are facing severe water shortages as drought conditions worsen. Many streams are drying up, and there is growing concern that this trend will only continue as climate change produces warmer and drier conditions. The loss of stream ecosystems has far reaching ecological, social, and economic implications. Species that depend on
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Science to Inform the Reconnection of Floodplains and Restoration of Green Space to Minimize Risk in the Future

This project identifies opportunities to manage flows, connections, and landscapes to increase the resilience of human communities and ecosystems. This research identifies dynamic and adaptive solutions to managing river flows that allow continued provision of valuable infrastructure services such as flood control, hydropower, and water supply, while also supporting thriving river...
Science to Inform the Reconnection of Floodplains and Restoration of Green Space to Minimize Risk in the Future

Science to Inform the Reconnection of Floodplains and Restoration of Green Space to Minimize Risk in the Future

This project identifies opportunities to manage flows, connections, and landscapes to increase the resilience of human communities and ecosystems. This research identifies dynamic and adaptive solutions to managing river flows that allow continued provision of valuable infrastructure services such as flood control, hydropower, and water supply, while also supporting thriving river ecosystems -
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The Available Science Assessment Process (ASAP) Continued: Evaluating Adaptation Actions for Sea-Level Rise and Coastal Change in the Pacific Northwest

Climate change is one of the most pressing issues facing resource management. The disruptions it is causing require that we change the way we consider management in order to ensure the future of habitats, species, and human communities. Practitioners often struggle with how to identify and prioritize specific climate adaptation actions (CAAs). Management actions may have a higher...
The Available Science Assessment Process (ASAP) Continued: Evaluating Adaptation Actions for Sea-Level Rise and Coastal Change in the Pacific Northwest

The Available Science Assessment Process (ASAP) Continued: Evaluating Adaptation Actions for Sea-Level Rise and Coastal Change in the Pacific Northwest

Climate change is one of the most pressing issues facing resource management. The disruptions it is causing require that we change the way we consider management in order to ensure the future of habitats, species, and human communities. Practitioners often struggle with how to identify and prioritize specific climate adaptation actions (CAAs). Management actions may have a higher probability of
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The Effects of Drought on Rio Grande Cutthroat Trout: The Role of Stream Flow and Temperature

Increasing temperatures and decreasing precipitation threaten the persistence of the Rio Grande cutthroat trout, the southernmost subspecies of cutthroat trout, found only in parts of New Mexico and Colorado. This subspecies appears to be more vulnerable to drought than more northern subspecies, because it occupies small and fragmented streams which are at greater risk of drying up...
The Effects of Drought on Rio Grande Cutthroat Trout: The Role of Stream Flow and Temperature

The Effects of Drought on Rio Grande Cutthroat Trout: The Role of Stream Flow and Temperature

Increasing temperatures and decreasing precipitation threaten the persistence of the Rio Grande cutthroat trout, the southernmost subspecies of cutthroat trout, found only in parts of New Mexico and Colorado. This subspecies appears to be more vulnerable to drought than more northern subspecies, because it occupies small and fragmented streams which are at greater risk of drying up during drought
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The Impact of Drought on Waterbirds and Their Wetland Habitats in California’s Central Valley

California’s Central Valley is a nexus for water resources in the state, draining the Sacramento and San Joaquin River watersheds. Urban centers, agricultural operations, and the environment all compete for limited water, and demand is expected to only increase as the population grows and agriculture intensifies. At the same time, the water supply is projected to decrease as temperatures...
The Impact of Drought on Waterbirds and Their Wetland Habitats in California’s Central Valley

The Impact of Drought on Waterbirds and Their Wetland Habitats in California’s Central Valley

California’s Central Valley is a nexus for water resources in the state, draining the Sacramento and San Joaquin River watersheds. Urban centers, agricultural operations, and the environment all compete for limited water, and demand is expected to only increase as the population grows and agriculture intensifies. At the same time, the water supply is projected to decrease as temperatures rise
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Understanding Sediment Transport to Coastal Waters and Coral Reefs in West Maui

Coral ecosystems of West Maui support a vibrant tourism industry and provide tangible economic benefits to the community. Hawaiian nearshore reefs generate about $800 million in annual revenue, not including the ecosystem services they provide - such as critical habitat for diverse fish species and buffering coasts from storm surges. The Hawaiian economy depends on healthy coral...
Understanding Sediment Transport to Coastal Waters and Coral Reefs in West Maui

Understanding Sediment Transport to Coastal Waters and Coral Reefs in West Maui

Coral ecosystems of West Maui support a vibrant tourism industry and provide tangible economic benefits to the community. Hawaiian nearshore reefs generate about $800 million in annual revenue, not including the ecosystem services they provide - such as critical habitat for diverse fish species and buffering coasts from storm surges. The Hawaiian economy depends on healthy coral ecosystems, yet
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Understanding the Impacts of Glaciers on Streamflow in Alaska and Washington

Glaciers are a central component to the hydrology of many areas in Alaska and the Pacific Northwest. Glacier melt plays a crucial role in the movement of nutrients through a landscape and into the ocean, and the flow of water into streams that sustain many species. As air temperatures rise, increased rates of glacier melt may have significant impacts to the hydrology and ecology in these...
Understanding the Impacts of Glaciers on Streamflow in Alaska and Washington

Understanding the Impacts of Glaciers on Streamflow in Alaska and Washington

Glaciers are a central component to the hydrology of many areas in Alaska and the Pacific Northwest. Glacier melt plays a crucial role in the movement of nutrients through a landscape and into the ocean, and the flow of water into streams that sustain many species. As air temperatures rise, increased rates of glacier melt may have significant impacts to the hydrology and ecology in these areas.
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Webinar: Sea-level Rise Modeling Handbook: Resource Guide for Coastal Land Managers, Engineers, and Scientists

Webinar: Sea-level Rise Modeling Handbook: Resource Guide for Coastal Land Managers, Engineers, and Scientists

View this webinar to learn more about the Sea-level Rise Modeling Handbook.
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Assessing Permafrost Changes and Related Impacts on Alaskan Infrastructure and Communities

Permafrost is a layer of perennially frozen soil that primarily exists in and around the Arctic and Antarctic regions of the world. While a shallow near-surface soil layer (called active layer) thaws during the summer and re-freezes in the winter, the underlying permafrost remains perennially frozen, often underlying buildings, roads, and other infrastructure. As warmer temperatures...
Assessing Permafrost Changes and Related Impacts on Alaskan Infrastructure and Communities

Assessing Permafrost Changes and Related Impacts on Alaskan Infrastructure and Communities

Permafrost is a layer of perennially frozen soil that primarily exists in and around the Arctic and Antarctic regions of the world. While a shallow near-surface soil layer (called active layer) thaws during the summer and re-freezes in the winter, the underlying permafrost remains perennially frozen, often underlying buildings, roads, and other infrastructure. As warmer temperatures become more
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Changes to Watershed Vulnerability under Future Climates, Fire Regimes, and Population Pressures

The project aimed to use existing models and data to understand how wildfires (number, size, and location) and land-use change will affect watersheds, and therefore water supply, under current conditions and future climates (through 2050) in the western U.S. The projected changes in temperature and precipitation are expected to affect water supply in two major ways: 1) decreased water...
Changes to Watershed Vulnerability under Future Climates, Fire Regimes, and Population Pressures

Changes to Watershed Vulnerability under Future Climates, Fire Regimes, and Population Pressures

The project aimed to use existing models and data to understand how wildfires (number, size, and location) and land-use change will affect watersheds, and therefore water supply, under current conditions and future climates (through 2050) in the western U.S. The projected changes in temperature and precipitation are expected to affect water supply in two major ways: 1) decreased water availability
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Changing Hawaiian Seascapes and Their Management Implications

Hawaiian shorelines and near-shore waters have long been used for cultural activities, food gathering and fishing, and recreation. As seascapes are physically altered by changing climate, the ways in which people experience these environments will likely change as well. Local perspectives of how seascapes are changing over time can help managers better understand and manage these areas...
Changing Hawaiian Seascapes and Their Management Implications

Changing Hawaiian Seascapes and Their Management Implications

Hawaiian shorelines and near-shore waters have long been used for cultural activities, food gathering and fishing, and recreation. As seascapes are physically altered by changing climate, the ways in which people experience these environments will likely change as well. Local perspectives of how seascapes are changing over time can help managers better understand and manage these areas for both
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