Rivers and Streams
Rivers and Streams
Filter Total Items: 237
Future of Aquatic Flows: Towards a National Synthesis of Streamflow Regimes Under a Changing Climate
In ecosystems characterized by flowing water, such as rivers and streams, the dynamics of how the water moves - how deep it is, how fast it flows, how often it floods - have direct effects on the underlying ecological communities. Yet increasingly, climate extremes like droughts and floods are disrupting fragile stream ecosystems by specifically changing their internal aquatic flows...
Future of Aquatic Flows: Towards a Synthesis of Changing Hydrology Under Increasing Climate Change and Disturbance Pressures
Understanding the paths by which water flows through the landscape is critical for providing fresh water for human use, maintaining ecosystem function, and better predicting how disturbances such as fire or drought may impact water quantity and water quality. Yet projected changes in climate, disturbances, and land use, are likely to alter hydrologic flow paths, and natural resource...
Future of the Colorado River (Phase 2): Reservoir Operation to Balance Water Supply and River Ecosystems in the Grand Canyon
State and federal agencies are negotiating long-term water-supply agreements for the Colorado River basin, but current policies prioritize water supply over ecological factors due to limited knowledge about how water storage strategies impact ecosystems. Researchers supported by this Southwest CASC project will develop a tool to evaluate river ecosystem outcomes of various patterns of...
Future Streamflow Estimates for Tongue River to Enable Northern Cheyenne Data Driven Water Management and Planning
Atmospheric warming is driving a shift in precipitation from snow to rain, changing precipitation intensity and seasonality, and increasing atmospheric demand for moisture in mountain river watersheds across the western United States. These changes will likely alter the timing and quantity of streamflow in rivers draining from the mountains. The Tongue River flows from the Bighorn...
Groundwater Flow and Temperature Modeling to Predict Stream Temperatures in Beaver Creek, Kenai Peninsula, Alaska
Salmon are an important resource to the ecosystems, economy, and culture of the Kenai Peninsula, Alaska. However, salmon are under increasing stress due to warming water temperatures and decreasing stream flow. Groundwater is a major contributor to many streams that can help maintain fish habitat during low flows and contributes cooler water that regulates stream temperatures in the warm...
Identifying Thermal Refugia for Brook Trout Climate Adaptation in Coldwater Streams
Climate change is making coldwater stream fish and their habitats more vulnerable than ever. In the Midwest, warming stream temperatures threaten recreational fishing for brook trout in their native range around the Great Lakes. To ensure that brook trout populations will persist into the future, it is crucial to focus management on areas where brook trout populations are most resilient...
Incorporating Climate, Disease and Invasive Species into the Conservation of a First Food, Klamath Redband Trout
Climate change has the potential to magnify existing problems in conservation, such as invasive species and disease. This threat is particularly severe in the Klamath Basin, where the fish parasite Ceratonova shastais making national headlines for killing salmon, and invasive trout have extirpated populations of native trout. The Klamath Basin is slated for one of the largest restoration...
Indigenous Perspectives on Lake Sturgeon and the Potential Impact of Climate Change
Lake sturgeon are a fish of strong subsistence, cultural, and spiritual importance for many Tribal nations. But lake sturgeon are especially vulnerable to climate change given their unique life history and historical mass declines. Therefore, there is a great need to incorporate Tribal perspectives on lake sturgeon shifts and information needs into adaptation planning to conserve these...
Informing Mekong River Basin Resiliency and Climate Adaptation
CASC experts are often requested to provide technical assistance to other Federal agencies, including the U.S. Department of State, as well as national and international partners. The U.S. Consulate in Thailand solicited leadership and guidance from the CASCs to help develop community-supported recommendations for increasing resiliency for fishing communities in the Mekong River Basin...
Integrating Economics and Ecology to Inform Climate-Ready Aquatic Invasive Species Management for Vulnerable Pacific Northwest River Communities
Throughout the Pacific Northwest, invasive flora threaten river ecosystems and the communities that depend on them. Invasive plants harm water quality, occupy habitat for native species, reduce recreation opportunities, and damage infrastructure such as pumps and dams. Resource managers from federal, state, and local agencies, as well as local non-profits, spend hundreds of thousands of...
Integrating Multiple Data Sets to Inform Climate Adaptation Strategies for Inland Fish and Recreational Fishing
Climate change is reshaping the abundance and distribution of sport fishes across the U.S., creating novel challenges for socially and economically important recreational fisheries. Existing fish and recreational fisheries data sets are invaluable given their broad geographic footprint and long-term data, but integration across datasets to inform management has been limited, leading to...
Integrating Stream Discharge and Temperature Monitoring for Tribal Partners in Southeast Alaska
Stream discharge and temperature patterns are being altered by climate change, but documenting these changes on the community level is challenging without community partners trained in suitable data collection techniques. The USGS Juneau Field Office is collaborating with the Yakutat Tlingit Tribe (YTT), the Southeast Alaska Tribal Ocean Research (SEATOR) network, and the Southeast...