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Appendix C - Density and vesicularity data for selected lava and tephra samples from the June 2007 Father's Day eruption site, Kīlauea Volcano An intrusion into Kīlauea’s upper East Rift Zone during June 17–19, 2007, during the 1983–2018 Pu‘u‘ō‘ō eruption, led to widespread ground cracking and a small (~1,525 m3) eruption on the northeast flank of the Kānenuiohamo cone, about 6 km upslope from the Pu‘u‘ō‘ō vent. Transmitted and induced very-low-frequency (VLF) magnetic fields were measured with a handheld VLF receiver along transects spanning the dike trace, and zones of ground cracking related to the intrusion were mapped. This dataset records the density and vesicularity of selected lava and tephra samples collected from the June 2007 Father's Day eruption site. The density of the basalt erupted was determined by measuring the weight of spatter and lava... Categories: Data; Tags: East Rift Zone, Episode 56, Father's Day event, Hawaii, Hawaii Volcanoes National Park, All tags... Island of Hawaiʻi, Kānenuiohamo, Kīlauea, Puʻuʻōʻō, State of Hawaii, eruption, field inventory and monitoring, geoscientificInformation, intrusion, lava density, lava flow, lava vesicularity, tephra, volcanic activity, volcanology, Fewer tags Chesapeake Bay Watershed 1:24k 10, 30 and 90-meter Riparian Buffer Zones This data release contains three 10-meter resolution GeoTIFFs representing 10-meter (35-foot), 30-meter (100-foot) and 90-meter (300-foot) riparian buffer zones along shorelines, rivers, streams, and other lotic (flowing) water features. The layers are binary, where the value of each cell represents the presence or absence of the buffer zone. In addition, the data release contains shapefile layers that document the extent of corrections that were made to the data to address errors in the stream network (see processing steps section for more details). The methodology combines various fine-scale input layers, including a 1:24k stream network and Chesapeake Bay 1-meter resolution Land Use/Land Cover to approximate... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chesapeake, Delaware, District of Columbia, Ecology, Forestry, All tags... Maryland, New York, Pennsylvania, USGS Science Data Catalog (SDC), Virginia, Water Quality, West Virginia, aquatic ecosystems, environment, land cover, land use, land use and land cover, riparian, riparian zone, river systems, terrestrial ecosystems, Fewer tags Predicted recreation economics under different management scenarios for Lake Powell releases These data were compiled to predict economic impacts to angling in Glen Canyon and whitewater rafting in Grand Canyon. The objective of our study was to estimate recreation impacts, or changes in consumer surplus, under different future Interim Guidelines sEIS and LTEMP sEIS alternatives. These data include monthly impacts in nominal 2022 dollars. These data were created for operations at Glen Canyon Dam for October 2023 through November 2027. These data were created by the U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center using mathematical modeling methods. Categories: Data; Tags: Arizona, Colorado River, Geography, Glen Canyon, Glen Canyon Dam, All tags... Grand Canyon, Hydrology, Information Sciences, Marble Canyon, USGS Science Data Catalog (SDC), Water Resources, angling, business and economics, consumer surplus, data release, economic value, economy, freshwater ecosystems, inland fishery resources, inlandWaters, rafting, recreation, recreational fishery resources, regulated river, river systems, sport fishing, whitewater, Fewer tags Alaska Climate Futures (mid and late 21st century) and Historical References (20th century) To meet the climate change planning and adaptation needs of Alaska managers and decision makers, I developed a set of statewide summaries of available climate change projections that can be further subset using GIS techniques for requests by management unit, watershed, or other location. This facilitates the development of tailored climate futures for decision makers’ regional or subregional management context. This file describes the source data and summaries for purposes of technical /scientific documentation. The methods and presentation for these datasets were adapted from products in previous USGS-approved IP products for the AKCASC Building Resilience Today project (e.g, Community of Kotlik et al. 2019).... Tags: Alaska, Arctic, Climatology, USGS Science Data Catalog (SDC), biota, All tags... climate futures, climate projections, fire frequency, precipitation, snow, temperature, vegetation change, water balance, Fewer tags Lake Erie Pelagic Prey Fish Community Data, 2022-2023 Since 2005, the U.S. Geological Survey - Great Lakes Science Center's Lake Erie Biological Station (LEBS) has participated in a collaborative, multiagency effort to assess pelagic prey fish populations in the western (WB), central (CB), and eastern (EB) basins of Lake Erie through a combination of hydroacoustic and midwater trawl sampling. Assessing lake-wide distribution and abundance of pelagic prey species over time facilitates evaluation of large-scale drivers of fish production while also considering food-web dynamics at a smaller sub-basin scale. Information from this survey will support decision making within an ecosystem-based fishery management framework. In support of binational Great Lakes fishery management,... Categories: Data; Tags: Aquatic Biology, Ecology, Great Lakes, Lake Erie, Pelagic prey fish, All tags... Remote Sensing, USGS Science Data Catalog (SDC), aquatic biology, biota, environment, field inventory and monitoring, fishery management, forage fish, pelagic fish, transect sampling, Fewer tags Laboratory Evaluation of Phototaxis in Cultured Cisco Larvae Field observations in a Lake Ontario embayment suggested that there is a phototaxic response of larval cisco that changes with development. This switch was verified using cultured cisco in a laboratory environment. These data include counts of cisco larvae at three depth ranges within multiple 95 liter tanks. Each tank of larvae were exposed to one of three different light treatments with three replicate tanks per treatment. Light treatments were 24 hours per day of light exposure, 24 hours per day in darkness, and a 12-hour light then 12-hour dark exposure cycle. Observations of cisco positioning within the water column were recorded periodically. The information collected included the date and time of the observation,... Categories: Data; Tags: Aquatic Biology, Chaumont Bay, Coregonine, Ecology, Great Lakes, All tags... Lake Ontario, USGS Science Data Catalog (SDC), Wildlife Biology, biota, fish larvae, light response, organism growth and development, phototaxis, Fewer tags Water quality results from Colorado River tributaries in Grand Canyon This dataset comprises water quality results from monitoring sites on major tributaries of the Colorado River in the Grand Canyon region beginning in 2015. These tributary sites include Little Colorado River above the mouth near Desert View, Arizona (USGS site ID 09402300); Kanab Creek above the mouth near Supai, Arizona (USGS site ID 09403850); Havasu Creek above the mouth near Supai, Arizona (USGS site ID 09404115); House Rock Wash below Emmett Wash in Rider Canyon, Arizona (USGS site ID 363851111482000); and Paria River at Lees Ferry, Arizona (USGS site ID 09382000). Monitoring of the Little Colorado River, Kanab Creek, and Havasu Creek sites began in 2015, with other sites added later. Categories: Data; Tags: Arizona, Grand Canyon, Lower Colorado River Basin, uranium mining, water quality Geospatial mapping products derived from 2018, 2020, and 2022 NAIP aerial imagery for the Scotts Creek Watershed, Lake County, CA The USGS, in cooperation with the U.S. Bureau of Land Management (BLM), created a series of geospatial mapping products of the Scotts Creek Watershed in Lake County, California, using National Agriculture Imagery Program (NAIP) imagery from 2018, 2020 and 2022 and Open Street Map (OSM) from 2019. The imagery was downloaded from United States Department of Agriculture (USDA) - Natural Resources Conservation Service (NRCS) Geospatial Data Gateway (https://datagateway.nrcs.usda.gov/) and Geofabrik GmbH - Open Street Map (https://www.geofabrik.de/geofabrik/openstreetmap.html), respectively. The imagery was classified using Random Forest (RF) Modeling to produce land cover maps with three main classifications - bare,... Tags: California, Lake County, Land Use Change, Remote Sensing, Scotts Creek, All tags... South Cow Mountain, USGS Science Data Catalog (SDC), Water Resources, aerial photography, elevation, freshwater ecosystems, geoscientificInformation, inlandWaters, land use and land cover, modeling, natural resource management, remote sensing, river systems, Fewer tags Contemporary fire history metrics for the conterminous United States (1984-2023) (ver. 3.0, April 2024) Fire history metrics enable rapidly increasing amounts of burned area data to be collapsed into a handful of data layers that can be used efficiently by diverse stakeholders. In this effort, the U.S. Geological Survey's Landsat Burned Area product was used to identify burned area across CONUS over a 40-year period (1984-2023). The Landsat BA product was consolidated into a suite of annual BA products, which in-turn were used to calculate a series of contemporary fire history metrics (30 m resolution). Fire history metrics included: (1) fire frequency (FRQ), (2) time since last burn (TSLB) and (3) year of last burn (YLB), (4) longest fire-free interval (LFFI), and (5) average fire interval length (FIL). All metrics... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Landsat, USGS Science Data Catalog (SDC), United States, burned area, fire frequency, All tags... fire regime, fire return interval, historic fire, land ownership, wildland fire, Fewer tags Data release for tracking rates of post-fire conifer regeneration distinct from deciduous vegetation recovery across the western U.S. Post-fire shifts in vegetation composition will have broad ecological impacts. However, information characterizing post-fire recovery patterns and their drivers are lacking over large spatial extents. In this analysis we used Landsat imagery collected when snow cover (SCS) was present, in combination with growing season (GS) imagery, to distinguish evergreen vegetation from deciduous vegetation. We sought to (1) characterize patterns in the rate of post-fire, dual season Normalized Difference Vegetation Index (NDVI) across the region, (2) relate remotely sensed patterns to field-measured patterns of re-vegetation, and (3) identify seasonally-specific drivers of post-fire rates of NDVI recovery. Rates of post-fire... Tags: Arizona, California, Climatology, Colorado, Douglas fir, All tags... Ecology, Engelmann spruce, Forestry, Idaho, Landsat, Lodgepole pine, Montana, NDVI, Nevada, Oregon, Pinyon pine, Remote Sensing, Rocky Mountains, Sierra Nevada Mountains, USGS Science Data Catalog (SDC), Utah, Washington, Wyoming, forest fire, recovery, resiliency, succession, wildfire, Fewer tags Subaerially exposed river sand and reservoir shoreline modelling for Lake Powell releases and changes in Lake Powell and Lake Mead storage These data were compiled to evaluate impacts of different reservoir management scenarios on sand exposure for aeolian landscape and cultural site resources. Objective of our study was to predict areas of dry, bare Colorado River sand as a function of different management alternative scenarios. These data represent predictions of dry, bare sand for the reach of the Colorado River between Glen Canyon Dam and Bright Angel Creek in Grand Canyon National Park. These data were created during 2023 by the U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center. These data can be used to understand how the area of sand available for windblown transport might be impacted different... Tags: Arizona, Coconino County, Colorado River, Ecology, Geography, All tags... Geomorphology, Glen Canyon, Glen Canyon Dam, Grand Canyon, Hydrology, Information Sciences, Lake Powell, Sedimentology, USGS Science Data Catalog (SDC), Water Resources, aeolian, archaeology, cultural, dam, data release, freshwater ecosystems, geomorphology, geoscientificInformation, inlandWaters, modeling, reservoir, river systems, sand deposits, sedimentation, subaerial, unconsolidated deposits, Fewer tags Appendix B - Line lengths for crack stations in Nāpau Crater An intrusion into Kīlauea’s upper East Rift Zone during June 17–19, 2007, during the 1983–2018 Pu‘u‘ō‘ō eruption, led to widespread ground cracking and a small (~1,525 m3) eruption on the northeast flank of the Kānenuiohamo cone, about 6 km upslope from the Pu‘u‘ō‘ō vent. Transmitted and induced very-low-frequency (VLF) magnetic fields were measured with a handheld VLF receiver along transects spanning the dike trace, and zones of ground cracking related to the intrusion were mapped. This dataset records the distance between sets of nails spanning ground cracks at discrete locations in Nāpau Crater, installed in 1997 as "crack stations" to monitor change. See fig. B-1 in the associated publication for a map of crack... Categories: Data; Tags: East Rift Zone, Episode 56, Father's Day event, Hawaii, Hawaii Volcanoes National Park, All tags... Island of Hawaiʻi, Kīlauea, Nāpau Crater, Puʻuʻōʻō, State of Hawaii, dike, eruption, field inventory and monitoring, geoscientificInformation, ground crack, intrusion, volcanic activity, volcanology, Fewer tags Data release for climate change impacts on surface water extents across the central United States High-frequency observations of surface water at fine spatial scales are critical to effectively manage aquatic habitat, flood risk and water quality. We developed inundation algorithms for Sentinel-1 and Sentinel-2 across 12 sites within the conterminous United States (CONUS) covering >536,000 km2 and representing diverse hydrologic and vegetation landscapes. These algorithms were trained on data from 13,412 points spread throughout the 12 sites. Each scene in the 5-year (2017-2021) time series was classified into open water, vegetated water, and non-water at 20 m resolution using variables not only from Sentinel-1 and Sentinel-2, but also variables derived from topographic and weather datasets. The Sentinel-1 model... Tags: Arkansas, Climatology, Google Earth Engine, Hydrology, Iowa, All tags... Louisiana, Midwest, Minnesota, Missouri, North Dakota, Oklahoma, Prairie Pothole Region, Remote Sensing, South Dakota, Southeast, Southwest, Texas, USGS Science Data Catalog (SDC), United States, Water Resources, drought, floodplains, floods, inundation, lakes, rivers, wetlands, Fewer tags Ground crack, VLF measurement, and sample vesicularity data for the June 2007 Father's Day eruption, Kīlauea Volcano An intrusion into Kīlauea’s upper East Rift Zone during June 17–19, 2007, during the 1983–2018 Pu‘u‘ō‘ō eruption, led to widespread ground cracking and a small (~1,525 m3) eruption on the northeast flank of the Kānenuiohamo cone, about 6 km upslope from the Pu‘u‘ō‘ō vent. Electromagnetic profiles using the very-low-frequency (VLF) technique (McNeill and Labson, 1991) were measured along transects spanning the dike trace, and zones of ground cracking related to the intrusion were mapped. The locations of crack zones and the VLF receiver measurements suggest that the Father’s Day dike splayed as it approached the surface, dividing into four segments—one between Pauahi Crater and Pu‘uhuluhulu and three en echelon... Categories: Data; Tags: East Rift Zone, Episode 56, Father's Day event, Island of Hawaiʻi, Kānenuiohamo, All tags... Kīlauea, Puʻuʻōʻō, State of Hawaii, USGS Science Data Catalog (SDC), Volcanology, dike, eruption, geoscientificInformation, ground crack, intrusion, Fewer tags Appendix D - VLF measurement data for the June 2007 Father's Day dike intrusion and eruption, Kīlauea Volcano An intrusion into Kīlauea’s upper East Rift Zone during June 17–19, 2007, during the 1983–2018 Pu‘u‘ō‘ō eruption, led to widespread ground cracking and a small (~1,525 m3) eruption on the northeast flank of the Kānenuiohamo cone, about 6 km upslope from the Pu‘u‘ō‘ō vent. Transmitted and induced very-low-frequency (VLF) magnetic fields were measured with a handheld VLF receiver (e.g., McNeill and Labson 1991) along transects spanning the dike trace, and zones of ground cracking related to the intrusion were mapped. This dataset records measurements collected using a Geonics Limited EM16 very low frequency (VLF) electromagnetic receiver along eight transects across and perpendicular to the presumed trace of the 2007... Categories: Data; Tags: East Rift Zone, Episode 56, Father's Day event, Hawaii, Hawaii Volcanoes National Park, All tags... Island of Hawaiʻi, Kānenuiohamo, Kīlauea, Puʻuʻōʻō, State of Hawaii, dike, eruption, field inventory and monitoring, geoscientificInformation, ground crack, intrusion, volcanic activity, volcanology, Fewer tags Appendix A - Ground crack measurement data for the June 2007 Father's Day dike intrusion and eruption, Kīlauea Volcano An intrusion into Kīlauea’s upper East Rift Zone during June 17–19, 2007, during the 1983–2018 Pu‘u‘ō‘ō eruption, led to widespread ground cracking and a small (~1,525 m3) eruption on the northeast flank of the Kānenuiohamo cone, about 6 km upslope from the Pu‘u‘ō‘ō vent. Transmitted and induced very-low-frequency (VLF) magnetic fields were measured with a handheld VLF receiver along transects spanning the dike trace, and zones of ground cracking related to the intrusion were mapped. This dataset records the location, trend, width, and opening direction of a subset of new cracks formed during the June 2007 Father's Day dike intrusion and eruption. Categories: Data; Tags: East Rift Zone, Episode 56, Father's Day event, Hawaii, Hawaii Volcanoes National Park, All tags... Island of Hawaiʻi, Kānenuiohamo, Kīlauea, Puʻuʻōʻō, State of Hawaii, dike, eruption, field inventory and monitoring, geoscientificInformation, ground crack, intrusion, volcanic activity, volcanology, Fewer tags Dissolved oxygen predictions for releases from Lake Powell under different management scenarios for Lake Powell releases Dissolved oxygen estimates were generated to help understand how different alternative management scenarios may affect the likelihood of low dissolved oxygen in Glen Canyon Dam releases. The study aimed to examine the effects of different management alternatives on late summer and early fall dissolved oxygen concentrations in Glen Canyon Dam releases. The estimates represent estimates of dissolved oxygen concentration in Glen Canyon Dam releases between August and October of a given year. These estimates were generated using data collected in Lake Powell reservoir as part of a long-term inter-agency water quality monitoring program conducted by the Bureau of Reclamation, the National Park Service, and the U.S. Geological... Tags: Arizona, CTD measurement, Coconino County, Colorado River, Ecology, All tags... Geochemistry, Geography, Glen Canyon, Glen Canyon Dam, Glen Canyon Dam National Recreation Area, Grand Canyon, Hydrology, Information Sciences, Lake Powell, Limnology, USGS Science Data Catalog (SDC), Wahweap Bay, Water Quality, Water Resources, arid reservoir, data release, dissolved oxygen, environment, eutrophication, field inventory and monitoring, field monitoring stations, freshwater ecosystems, inlandWaters, oxygen content (water), surface water quality, Fewer tags Lifespan of marsh units in New York salt marshes Lifespan of salt marshes in New York are calculated using conceptual marsh units defined by Defne and Ganju (2018) and Welk and others (2019, 2020a, 2020b, 2020c). The lifespan calculation is based on estimated sediment supply and sea-level rise (SLR) predictions after Ganju and others (2020). Sea level predictions are local estimates which correspond to the 0.3, 0.5, and 1.0 meter increase in Global Mean Sea Level (GMSL) scenarios by 2100 from Sweet and others (2022). The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands with the intent of providing Federal, State, and local managers with tools to estimate the vulnerability and ecosystem... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Atlantic, Long Island Sound, New York, United States, coastal ecosystems, All tags... coastal processes, elevation, environment, estuarine processes, estuary, geospatial datasets, inlandWaters, lifespan, marsh health, none, oceans, salt marsh, sea-level change, sediment transport, vegetation, wetland ecosystems, wetland functions, Fewer tags Stability testing results for stock solutions to standardize calibration of field fluorescence sensors Optical sensors measuring fluorescence of dissolved organic matter (fDOM) are increasingly used in water quality studies because they provide proxy measurements for a variety of contaminants and constituents of concern including metals and wastewater effluent. Similarly, sensors measuring fluorescence of chlorophyll (fChl) and phycocyanin (fPC) have gained popularity to measure phytoplankton concentration, biomass, and even primary productivity. Optical sensors require calibration using a calibration standard solution which is diluted from a working stock solution. However, preparation of stock solutions is challenging because they are difficult to prepare accurately, need to be prepared in a laboratory setting,... Categories: Data; Tags: California, California Water Science Center, Organic Matter Research Lab, Sacramento, USGS Science Data Catalog (SDC), All tags... Water Quality, algae, calibration, chlorophyll, environment, fDOM, fluorescence, optical sensor, organic matter, phycocyanin, standard solution, water quality, Fewer tags Predicting sediment responses to different management scenarios for Lake Powell releases These data were compiled for/to modeling to assess impact of management scenarios on Colorado River sediment resources. Objective(s) of our study were to assess impact of management scenarios on Colorado River sediment resources. These data represent model results for high flow experiment timing/duration, sand mass balance, sandbar volume, based on the data in the Interim Guidelines SEIS and LTEMP SEIS folders. These data were generated in 2023-2024 and are model simulations of Colorado River sediment resources downstream of Glen Canyon dam. These data were created by the U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring & Research Center with models generated and codes written/adapted... Categories: Data; Tags: Arizona, Coconino County, Colorado River, Ecology, Geography, All tags... Geomorphology, Glen Canyon, Glen Canyon Dam, Grand Canyon, Hydrology, Information Sciences, Lake Powell, Sedimentology, USGS Science Data Catalog (SDC), Water Resources, data release, earth sciences, environment, geology, geomorphology, hydrology, inlandWaters, mathematical modeling, sedimentology, time series analysis, time series datasets, water resources, Fewer tags 1 2 »