Skip to main content
Advanced Search

Filters: Types: OGC WFS Layer (X) > Date Range: {"choice":"month"} (X)

1,143 results (31ms)   

Filters
Contacts (Less)
View Results as: JSON ATOM CSV
thumbnail
Handwritten notes on back of photo: C.H. Birdseye, E.C. LaRue, Herman Stabler. ca. 1924. no. 36177 Stamped on back of photo: Reproduced from the Collection of the Library of Congress. Caption: La Rue, Birdseye, and Stabler standing near the Grand in front of the Interior Building, Washington, D.C., January 12, 1924, obtained from page 243 in Boyer, D., Webb, R., & Collier, M. (2007). Aftermath: Politics and the Strident Hydraulic Engineer. In Damming Grand Canyon: The 1923 USGS Colorado River Expedition (pp. 242-278). University Press of Colorado. doi:10.2307/j.ctt4cgqhx.13
thumbnail
Isidore Adler, chemist, operates a gonimeter used for x-ray fluorescence analysis of individual grains of mineral specimens, Geologic Division, U.S. Geological Survey, Washington, D.C. 1958. Lower right photograph page 36, Images of the U.S. Geological Survey, 1879-1979.
thumbnail
The U.S. Geological Survey (USGS) installed acoustic bedload monitoring systems at four sites along the Trinity River below Lewiston Dam to record the noise generated by mobilized bed material, known as sediment generated noise (SGN) (Geay and others, 2017). The four sites are: Trinity River at Lewiston (TRAL, 11525500), Trinity River above Grass Valley Creek (TRGVC, 11525630), Trinity River at Limekiln Gulch (TRLG, 11525655) and Trinity River at Douglas City (TRDC, 11525854). These sites were selected because bedload measurements are frequently made at these locations during restoration flows as part of monitoring done by the Trinity River Restoration Program (TRRP). Monitoring took place in the spring of 2015,...
thumbnail
A multiple machine-learning model (Asquith and Killian, 2024) implementing Cubist and Random Forest regressions was used to predict monthly mean groundwater levels through time for the available years described in the metadata for the Mississippi River Valley alluvial aquifer (MRVA). The MRVA is the surficial aquifer of the Mississippi Alluvial Plain (MAP), located in the south-central United States. Employing two machine-learning techniques offered the opportunity to generate model and statistical error and covariance between them to estimate total uncertainty. Potentiometric surface predictions were made at the 1-kilometer grid scale using the National Hydrogeologic Grid (Clark and others, 2018). For a full description...
thumbnail
Panorama with image 388. The Niter hills west of Amargosa River at Acme, from low knoll west of the T & T. Railroad track about one- quarter mile northwest of mile post 82. Crucero (?) quadrangle. Inyo County, California. January 22, 1918.
thumbnail
Glacier National Park, Montana. West from the summit of Red Eagle Mountain: Going-to-the-Sun Mountain in the center (photo sec0347a) and Great Northern Railroad chalets on Upper Saint Mary Lake beneath it. Photo by C.S. Corbett. August 1914. Photos sec00347, sec0347a, sec0347b form a panorama.
thumbnail
The Pacific Ocean is home to a number of low-lying, coastal national parks and wildlife refuges. These public lands are situated on coral reef-lined islands that are susceptible to inundation from sea-level rise and flooding during storms. Because of their low-lying nature and limited availability of space, ecosystems, cultural resources, and infrastructure on these islands are particularly vulnerable to flooding. Sea-level rise will further exacerbate the impact of storms on island parks and refuges by increasing wave-driven coastal flooding, with consequences for ecological and human communities alike. However, most assessments of future conditions at coastal national parks and refuges consider only permanent...
thumbnail
As a low-lying coastal nation, the Republic of the Marshall Islands is at the forefront of exposure to climate change impacts. The Republic of the Marshall Islands has a strong dependence on natural resources and biodiversity not only for food and income but also for culture and livelihood. However, these resources are threatened by rising sea levels and associated coastal hazards (storm surges, saltwater intrusion, erosion, etc.). High-quality data for atoll ‘ridge to reef’ (land and ocean) areas are needed to provide remote communities with the tools and strategies to make adaptation efforts before disasters occur. Although the Republic of the Marshall Islands’ National Strategic Plans recognize the need to...
thumbnail
As part of the State Wildlife Grant Fund, states are required to submit State Wildlife Plans (SWAPs) every 10 years detailing threats to habitats and species and conservation plans. However, incorporating climate change in SWAPs is voluntary, and capacity/expertise limitations at state agencies have resulted in varied and often only partial consideration of climate change impacts. In response, the MW CASC will conduct literature reviews to assess climate stressors and impacts to habitats and key species and to identify relevant adaptation actions for 13 different Level 2/3 EPA Ecoregions contained within the MW CASC area states. This work will provide a foundation for future habitat vulnerability assessments. ...
thumbnail
Loko iʻa (Hawaiian fishponds) are an advanced, extensive form of aquaculture found nowhere else in the world. Loko iʻa practices are the result of over a thousand years of intergenerational knowledge, experimentation, and adaptation, and once produced over 2 million pounds of fish per year throughout the Hawaiian Islands. These fishponds provided a consistent and diverse supply of fish when ocean fishing was not possible or did not yield enough supply. In many ways, loko iʻa are foundational to traditional aquaculture in Hawai‘i and have the potential to provide food security that contributes to greater coastal community resilience and economic autonomy. Today, changes in coastal and hydrological processes, including...
thumbnail
For the past few years, “king tides,” or the highest tides of the year, have been occurring more frequently and significantly affecting coastal environments across Hawaiʻi. Now, disappearing beaches and waves crashing over roadways are seemingly the “new normal.” In response, the state of Hawaiʻi is implementing adaptation strategies to combat tidal flooding in coastal areas. While flood management strategies are being implemented in urban areas, less is known about how tidal flooding, and associated inundation into surface and groundwater, might influence watershed dynamics and the native animals that depend on estuarine environments where freshwater meets the sea. Efforts for biocultural restoration of ecosystem...
thumbnail
National Wildlife Refuges (NWRs) along the East Coast of the United States protect habitat for a host of wildlife species, while also offering storm surge protection, improving water quality, supporting nurseries for commercially important fish and shellfish, and providing recreation opportunities for coastal communities. Yet in the last century, coastal ecosystems in the eastern U.S. have been severely altered by human development activities as well as sea-level rise and more frequent extreme events related to climate change. These influences threaten the ability of NWRs to protect our nation’s natural resources and to sustain their many beneficial services. Through this project, researchers are collaborating with...
thumbnail
Assessing the impact of flow alteration on aquatic ecosystems has been identified as a critical area of research nationally and in the Southeast U.S. This project aimed to address the Ecohydrology Priority Science Need of the SE CSC FY2012 Annual Science Work Plan by developing an inventory and evaluation of current efforts and knowledge gaps in hydrological modeling for flow-­‐ecology science in global change impact studies across the Southeast. To accomplish this goal, we completed a thorough synthesis and evaluation of hydrologic modeling efforts in the Southeast region (including all states of the Southeastern Association of Fish and Wildlife Agencies (SEAFWA) including Alabama, Arkansas, Florida, Georgia, Kentucky,...
thumbnail
Fire has always been a part of life in southern California. Climate change and current fire management practices have led to catastrophic losses and impacts to human health, infrastructure and ecosystems, as seen, for example, in the 2018 Montecito debris flow. Indigenous wisdom instructs that rather than suppressing fire, we should seek to be in good relationship with fire. This project centers the voices of Chumash people by revitalizing their good relationship with fire in Chumash homelands. This revitalization comes at a critical time for both fire management and revitalization of Indigenous cultural burning practices in the southwest. The project will enable the recovery and documenting of Chumash knowledge...
thumbnail
The 2017 fire season in California was highly unusual with its late seasonal timing, the areal extent it burned, and its devastation to communities. These fires were associated with extreme winds and were potentially also influenced by unusually dry conditions during several years leading up to the 2017 events. This fire season brought additional attention and emphasized the vital need for managers in the western U.S. to have access to scientific information on when and where to expect dangerous fire events. Understanding the multiple factors that cause extreme wildfire events is critical to short and long-term forecasting and planning. Seasonal climate measures such as temperature and precipitation are commonly...
thumbnail
Streamflow in the Colorado River is heavily influenced by high-elevation snowpack. Warming temperatures in spring can reduce snow-fed flows, with serious implications for the water supplies that support communities and wildlife. While it is already well-known that precipitation has a significant influence on river flow, recent observations suggest that temperature and the amount of water in soil may also influence streamflow. In the face of a changing climate, it is important that resource managers understand how factors such as changing temperatures and precipitation will affect this vital water source. To address this need, researchers are examining records of streamflow, temperature, soil moisture, and precipitation...
thumbnail
Drought and wildfire pose enormous threats to the integrity of natural resources that land managers are charged with protecting. Recent observations and modeling forecasts indicate that these stressors will likely produce catastrophic ecosystem transformations, or abrupt changes in the condition of plants, wildlife, and their habitats, in regions across the country in coming decades. In this project, researchers will bring together land managers who have experienced various degrees of ecosystem transformation (from not yet experiencing any changes to seeing large changes across the lands they manage) to share their perspectives on how to mitigate large-scale changes in land condition. The team will conduct surveys...
thumbnail
The Northern Glaciated Plains in the upper Midwest United States is a region where fishing generates millions of dollars a year for local and state economies. Maintaining these revenues requires the management of fish populations that are popular and accessible (e.g. boat ramps, public land access) to anglers. Fisheries throughout the world are currently undergoing unprecedented changes to water levels and habitat quality resulting from climate change. The consequences of climate change to Northern Glaciated Plains fisheries are unknown but pose an immediate challenge for resource managers as angler access and opportunities can be jeopardized when: a) boat ramps become inaccessible due to changing water levels,...
thumbnail
In southwestern Colorado, land managers anticipate the impacts of climate change to include higher temperatures, more frequent and prolonged drought, accelerated snowmelt, larger and more intense fires, more extreme storms, and the spread of invasive species. These changes put livelihoods, ecosystems, and species at risk. Focusing on communities in southwestern Colorado’s San Juan and Gunnison river basins, this project will expand opportunities for scientists, land managers, and affected residents to identify actions that can support resilience and adaptation in the face of changing climate conditions. This project builds on the project “Building Social and Ecological Resilience to Climate Change in southwestern...
thumbnail
Tribal resource managers in the southwest U.S. are facing a host of challenges related to environmental change, including increasing temperatures, longer periods of drought, and invasive species. These threats are exacerbating the existing challenges of managing complex ecosystems. In a rapidly changing environment, resource managers need powerful tools and the most complete information to make the most effective decisions possible. Traditional Ecological Knowledge has enabled Indigenous peoples to adaptively manage and thrive in diverse environments for thousands of years, yet it is generally underutilized and undervalued, particularly in the context of western scientific approaches. Traditional Ecological...
map background search result map search result map Evaluating the Use of Models for Projecting Future Water Flow in the Southeast The Niter hills west of Amargosa River at Acme, from low knoll west of the T & T. Railroad track about one- quarter mile northwest of mile post 82. Inyo County, California. 1918. Isidore Adler, chemist, operates a gonimeter used for x-ray fluorescence analysis of individual grains of mineral specimens, Geologic Division,Washington, D.C. 1958. West from the summit of Red Eagle Mountain. Glacier National Park, Montana. 1914. Examining the Influence of Temperature and Precipitation on Colorado River Water Resources: Reconstructing the Past to Understand the Future Climate Change Adaptation for Coastal National Wildlife Refuges Building Social and Ecological Resilience to Climate Change in Southwestern Colorado: Phase 2 Preventing Extreme Fire Events by Learning from History: The Effects of Wind, Temperature, and Drought Extremes on Fire Activity Science Needs Assessment to Support Management of Loko Iʻa (Hawaiian Fishpond) Resources and Practices Critical to the Native Hawaiian Community The Impact of Climate Change and Sea-Level Rise on Future Flooding of Coastal Parks and Refuges in Hawaiʻi and the U.S. Affiliated Pacific Islands Exploring the Past to Plan for the Future: Integrating Indigenous Knowledge and Paleoperspectives to Inform Climate Change Adaptation Learning From the Past and Planning for the Future: Experience-Driven Insight Into Managing for Ecosystem Transformations Induced by Drought and Wildfire Enhancing Stakeholder Capacity for Coastal Inundation Assessments in the Marshall Islands Eugene Clyde La Rue, Claude H. Birdseye, and Herman Stabler standing by the Grand. Washington, D.C. 1924. Effect of Extreme Tidal Events on Future Sea-Level Rise Scenarios for He‘eia Fish Communities undergoing Ahupua‘a Restoration Impact of Climate Driven Changes to Water Levels on Recreational Fisheries in the Northern Glaciated Plains Cycles of Renewal: Returning Good Fire to the Chumash Homelands State Wildlife Action Planning in the Midwest Sediment generated noise and bedload data from the Trinity River, California, 2015-2019. Statistical predictions of groundwater levels and related spatial diagnostics for the Mississippi River Valley alluvial aquifer from the mmlMRVAgen1 statistical machine-learning software Sediment generated noise and bedload data from the Trinity River, California, 2015-2019. Isidore Adler, chemist, operates a gonimeter used for x-ray fluorescence analysis of individual grains of mineral specimens, Geologic Division,Washington, D.C. 1958. Eugene Clyde La Rue, Claude H. Birdseye, and Herman Stabler standing by the Grand. Washington, D.C. 1924. Climate Change Adaptation for Coastal National Wildlife Refuges West from the summit of Red Eagle Mountain. Glacier National Park, Montana. 1914. The Niter hills west of Amargosa River at Acme, from low knoll west of the T & T. Railroad track about one- quarter mile northwest of mile post 82. Inyo County, California. 1918. Building Social and Ecological Resilience to Climate Change in Southwestern Colorado: Phase 2 Cycles of Renewal: Returning Good Fire to the Chumash Homelands Statistical predictions of groundwater levels and related spatial diagnostics for the Mississippi River Valley alluvial aquifer from the mmlMRVAgen1 statistical machine-learning software Impact of Climate Driven Changes to Water Levels on Recreational Fisheries in the Northern Glaciated Plains Examining the Influence of Temperature and Precipitation on Colorado River Water Resources: Reconstructing the Past to Understand the Future Enhancing Stakeholder Capacity for Coastal Inundation Assessments in the Marshall Islands Preventing Extreme Fire Events by Learning from History: The Effects of Wind, Temperature, and Drought Extremes on Fire Activity Exploring the Past to Plan for the Future: Integrating Indigenous Knowledge and Paleoperspectives to Inform Climate Change Adaptation Learning From the Past and Planning for the Future: Experience-Driven Insight Into Managing for Ecosystem Transformations Induced by Drought and Wildfire Science Needs Assessment to Support Management of Loko Iʻa (Hawaiian Fishpond) Resources and Practices Critical to the Native Hawaiian Community Effect of Extreme Tidal Events on Future Sea-Level Rise Scenarios for He‘eia Fish Communities undergoing Ahupua‘a Restoration State Wildlife Action Planning in the Midwest Evaluating the Use of Models for Projecting Future Water Flow in the Southeast The Impact of Climate Change and Sea-Level Rise on Future Flooding of Coastal Parks and Refuges in Hawaiʻi and the U.S. Affiliated Pacific Islands