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Pebble counts were performed to assess the bed surface grain size distribution at five delineated mussel habitats in the Big River, Missouri. These data were collected in support of research assessing the mussel communities and characteristics of freshwater mussel habitats in the Big River (Albers and others, 2016; Roberts and others, 2016). Pebble counts were performed at the mussel habitats following the methods of Wolman (1954). Grain diameters of 99-100 particles were measured on the intermediate axis. The pebble count data are semi-continuous; grains smaller than 2 mm were classified as sand, and grains larger than 64 mm were classified as either cobble (65-256 mm) or boulder (greater than 256 mm) but measured...
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This child data release includes field spectra and in situ measurements of Rhodamine WT dye concentration acquired during a tracer experiment performed on the Missouri River near Columbia, Missouri, on May 5, 2021. One of the primary goals of this tracer experiment was to assess the feasibility of inferring concentrations of a visible dye (Rhodamine WT) from various types of remotely sensed data in a large, highly turbid natural river channel. Previous research on remote sensing of tracer dye concentrations has focused on clear-flowing streams, but the Missouri River is much more turbid. As a result, the effect of the dye on the reflectance of the water could be obscured by the effects of suspended sediment on reflectance....
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To support research on dispersion in river channels, a tracer dye experiment was performed on the Kootenai River in northern Idaho, September 25-27, 2017. This data release provides access to hyperspectral image acquired during the experiment and the supporting field-based measurements of reflectance and dye concentration are available through related data releases. The hyperspectral image data were acquired by Quantum Spatial Inc. (QSI) using the ITRES CASI 1500H imaging system deployed from a Cessna Caravan manned aircraft from a flying height of 1000 m above ground level. Initial geometric and radiometric data processing was performed by ITRES and yielded images with 0.5 m pixels for each of 48 spectral bands...
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This U.S. Geological Survey (USGS) Data Release provides phytoplankton data for samples collected from eleven large river sites throughout the United States, from June through September 2017. All data are reported as raw calculated values and are not rounded to USGS significant figures. The dataset includes all routine and quality assurance/quality control samples collected as part of a National Water Quality Assessment Project pilot study to describe the potential for cyanobacteria and cyanotoxin occurrence in the Nation's large rivers. Phytoplankton were identified to the lowest possible taxonomic level and abundances (density reported as natural units) are reported.
Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Algae, California, Chattahoochee River near Whitesburg, GA, Connecticut, Connecticut River at Thompsonville, CT, All tags...
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This data release contains river bed surface grain size measurements, water-surface elevation measurements, and digital elevation models (DEMs) for select reaches of the Big River, Missouri. These data were collected in support of research assessing the hydraulic conditions of freshwater mussel habitat in the Big River. The individual metadata associated with each data type describe the process steps, data inputs and sources, and the locations where the data were collected.
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The US FWS Patoka River National Wildlife Refuge is associated with a Lower Wabash River LCD team exploring voluntary conservation on public and private lands in a region with fairly cohesive ecology, issues and practices in mixed habitat types of uplands, wetlands and floodplain forest in the mainstem and headwaters along the Lower Wabash River in two states: south of Terre Haute, IN; the Eel River & Lower White River below the confluence with the Wabash River in Indiana; and the Little Wabash and Fox Rivers below Highway 50 in Illinois. The project focuses on management of floodplains and headwater areas that have direct effects on these bottomland habitats. Initial objectives include: wildlife conservation; nutrient...
This project resulted in an extensive mapping of coastal change along the entire coastline of the Western Alaska Landscape Conservation Cooperative (LCC). The work provides important baseline information on the distribution and magnitude of landscape changes over the past 41 years. The extent of change to the coastline and to coastal features, such as spits, barrier islands, estuaries, tidal guts and lagoons, was known to be substantial in some areas along the coast (e.g., portions of the Yukon–Kuskokwim Delta), although the extent of change along the full Bering Sea coast was not well documented. With this analysis, changes can be summarized for different land ownerships or other units to assess the extent of recent...
Categories: Data, Image; Tags: BARRIER ISLANDS, BARRIER ISLANDS, BARRIER ISLANDS, BARRIER ISLANDS, COASTAL AREAS, All tags...
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This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the Alaska, United States. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go...
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NatureServe worked with several federal, state, and NGO partners in the United States and Mexico to conduct a climate change vulnerability assessment of major natural community types found within the Mojave and Sonoran Deserts. The project focused on ten major upland, riparian, and aquatic community types, including pinyon-juniper woodlands, Joshua tree-blackbrush scrub, creosote-bursage scrub, salt desert scrub, Paloverde-mixed cacti scrub, semi-desert grassland, desert riparian and stream, riparian mesquite bosque, and desert springs. This effort piloted a new Habitat Climate Change Vulnerability Index (HCCVI) approach being developed by NatureServe, as a companion to an existing index for species. The project...
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Funded by Arizona Game & Fish Department, our team of conservation biologists and GIS Analysts at Northern Arizona University are creating detailed linkage designs for 16 priority areas highlighted in the Wildlife Linkages Assesment. These plans identify and map multi-species corridors that will best maintain wildlife movement between wildland blocks, as well as highlight specific planning and road mitigation measures required to maintain connectivity in these corridors. Note: The linkage design reports are in compressed PDF format for faster download. Unfortunately, the compression occasionally makes small text on maps within the report difficult to read. If you would like a high-resolution PDF or PNG copy of any...
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The Nature Conservancy's Center for Science and Public Policy in Arizona was created to engage stakeholders and expertise in applied science and policy to develop new information, ideas, and tools that can help solve some of our most pressing challenges affecting people and nature. Arizona faces critical challenges in preparing for a prosperous and sustainable future. Solving pressing challenges about water supplies, how we grow, where we build our transportation and energy infrastructure, how we sustain our environment and improve quality of life will require strong, creative leadership, institutional capacity and public support. It also will require new information and tools to help problem-solve and enable...
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The Nature Conservancy's New Mexico Conservation Science Program works with public & private agencies and institutions on ecological management, conservation planning, and scientific assessments to further its mission to “preserve the plants, animals, and natural communities that represent the diversity of life on Earth by protecting the lands and waters they need to survive.”
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Mapa Digital de México es un Sistema de Información Geográfica (SIG), desarrollado por el INEGI, que integra información de los elementos naturales y culturales que conforman el entorno geográfico del país y permite relacionarlos con información estadística. Se ofrece en dos modalidades, que buscan atender distintas necesidades de los usuarios: Mapa Digital de México en línea. Facilita la consulta de 168 capas de información sobre cartografía urbana (carreteras, localidades e infraestructura en general) y recursos naturales (ríos, lagos, montañas, vegetación, etc.) de nuestro territorio, y permite búsquedas rápidas. Mapa Digital de México para escritorio. Es una versión más amplia y desarrollada para instalarse...
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This data release contains information on computed tomography (CT) images of a vibracore that was collected by the U.S. Geological Survey in 2019. A site next to the San Lorenzo River in Henry Cowell Redwoods State Park, California, was cored to understand the history of recent vertical incision and floodplain abandonment. The core was split into 3 segments after collection. Each segment was scanned using a Geotek Rotating X-ray CT (RXCT) System and CT reconstruction was performed using Geotek reconstruction software. Geotek CT_Quickview software was used to select a representative down-core orthogonal slice from each core segment and the Geotek AddRuler software was used to display core-lengths in each image. The...
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This data release consists of a set of tiled orthophotos of the Salcha River in Alaska acquired on July 25, 2019. The orthophotos were produced from images obtained using a Hasselblad A6D-100C 100 megapixel digital mapping camera deployed within a pod mounted on the landing gear of a Robinson R44 helicopter. Images were acquired as the helicopter transited a series of flight lines designed to provide complete coverage, with ample overlap, of the study area along the Salcha River. Also within the pod was an ATLANS GPS/Inertial Motion Unit (IMU) that recorded the position and orientation of the platform during the flight. This information was used to geo-reference the images by performing aerial triangulation and...
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Digital flood-inundation maps for a 3.2-mile reach of North Fork Salt Creek at Nashville, Indiana, were created by the U.S. Geological Survey (USGS) in cooperation with the Indiana Department of Transportation. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science Web site at http://water.usgs.gov/osw/flood_inundation/, depict estimates of the areal extent and depth of flooding corresponding to selected water levels (stages) at the USGS streamgage 03371650, North Fork Salt Creek at Nashville, Ind. Real-time stages at this streamgage may be obtained on the Internet from the USGS National Water Information System at http://waterdata.usgs.gov/nwis or the National Weather...
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Digital flood-inundation maps for a 6.5-mile reach of the Salamonie River at Portland, Indiana, were created by the U.S. Geological Survey (USGS) in cooperation with the Indiana Department of Transportation. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science website at https://water.usgs.gov/osw/flood_inundation/, depict estimates of the areal extent and depth of flooding corresponding to selected water levels (stages) at the USGS streamgage on the Salamonie River at Portland, Indiana (station 03324200). Near-real-time stages at this streamgage may be obtained from the USGS National Water Information System web interface at https://doi.org/10.5066/F7P55KJN or the National...
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California has developed a watershed delineation scheme, CALWATER 2.2, based on the State Water Resources Control Board planning watershed numbering scheme. The planning watersheds are similar in size to 6th field HUs and were used in this analysis. The watersheds that cross the California/Oregon boundaries were extended into Oregon by on-screen digitizing in ArcMap following the ridgelines on the 30m digital elevation models (DEM). The full report and other datasets from the Preliminary Aquatic Integrity Assessment for the Lower/Middle Klamath River and the Upper Sacramento River can be found in the gallery at: http://app.databasin.org/app/pages/galleryPage.jsp?id=c0b34c4e1f7c405fab4829d4fd56b36d
Samples were taken year-round at eleven sites along the altitudinal profile (2900-1400 m a.s.l.) of the Gunnison River, a 329 km tributary of the Colorado River, to document the distribution of the Plecoptera and to evaluate responses to hypolimnial-release dams in the headwaters and middle reaches. Twenty-two species were present, with the greatest species richness occurring in an unregulated segment upstream of the middle reach dams; average nymphal biomass over the study period (175 organisms, 395 mg dry mass m?2) was also greatest in this segment. Only four species (58 organisms, 48 mg m?2) were present in the tailwaters of the headwater dam and values were greatly reduced (nine species; 35 organisms, 180 mg...
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Pebble counts were used to characterize the sediment grain size distribution of the bed surface for two reaches of the lower Merced River in California's Central Valley to support research intended to evaluate the extent to which large-scale restoration projects provided improved salmon spawning habitat. A related goal of this study was to improve our understanding of the geomorphic factors influencing spawning site selection by salmon. The pebble counts were performed at the Merced River Ranch and Robinson Reach field sites using the method of Wolman [1954]. Grain diameters (n>100) were measured using a gravelometer by recording the largest opening on the gravelometer that an individual particle did NOT pass...
map background search result map search result map SE Alaska National Wetland Inventory Planning watersheds for the Lower/Middle Klamath River and Upper Sacramento River Mapa Digital de Mexico Arizona Missing Linkages Climate Change Vulnerability and Adaptation Strategies for Natural Communities New Mexico Conservation Science Lower Wabash Landscape Conservation Design Center for Science and Public Policy North Fork Salt Creek at Nashville, Indiana, Flood-Inundation Model and GIS Data Flood-inundation geospatial datasets for the Salamonie River at Portland, Indiana Hyperspectral image data acquired during a tracer dye experiment on the Kootenai River, ID, September 27, 2017 Pebble count-based bed surface sediment grain size distributions from two restored reaches of the lower Merced River, California Phytoplankton data for samples collected at eleven large river sites throughout the United States, June through September 2017 Geo-referenced orthophotos of the Salcha River, Alaska, acquired July 25, 2019 Hydraulic measurements from select reaches of the Big River, Missouri Vibracore CT scans from the San Lorenzo River Field spectra from a tracer experiment on the Missouri River near Columbia, MO, on May 5, 2021 Pebble count-based semi-continuous bed surface sediment grain size measurements from mussel habitats in the Big River, Missouri Vibracore CT scans from the San Lorenzo River North Fork Salt Creek at Nashville, Indiana, Flood-Inundation Model and GIS Data Geo-referenced orthophotos of the Salcha River, Alaska, acquired July 25, 2019 Flood-inundation geospatial datasets for the Salamonie River at Portland, Indiana Pebble count-based bed surface sediment grain size distributions from two restored reaches of the lower Merced River, California Field spectra from a tracer experiment on the Missouri River near Columbia, MO, on May 5, 2021 Hydraulic measurements from select reaches of the Big River, Missouri Pebble count-based semi-continuous bed surface sediment grain size measurements from mussel habitats in the Big River, Missouri Lower Wabash Landscape Conservation Design Planning watersheds for the Lower/Middle Klamath River and Upper Sacramento River Arizona Missing Linkages Center for Science and Public Policy New Mexico Conservation Science SE Alaska National Wetland Inventory Climate Change Vulnerability and Adaptation Strategies for Natural Communities Mapa Digital de Mexico Phytoplankton data for samples collected at eleven large river sites throughout the United States, June through September 2017