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This portion of the USGS data release presents bathymetry data collected during surveys performed in northern Monterey Bay, California in September 2016 (USGS Field Activity Number 2016-674-FA). Bathymetry data were collected using a personal watercraft (PWC) and small boat equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9° beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a YSI CastAway CTD during the survey....
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This portion of the USGS data release presents topography data collected during surveys performed along northern Monterey Bay, California, in March 2017 (USGS Field Activity Number 2017-620-FA). Topographic profiles were collected on foot with GNSS receivers mounted on backpacks. Prior to data collection, vertical distances between the GNSS antennas and the ground were measured using a tape measure. Hand-held data collectors were used to log raw data and display navigational information allowing surveyors to navigate survey lines spaced at 50- to 250-m intervals along the beach. Profiles were surveyed from the landward edge of the study area (either the base of a bluff, engineering structure, or just landward of...
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This portion of the USGS data release presents bathymetry data collected during surveys performed in northern Monterey Bay, California in March 2016 (USGS Field Activity Number 2016-627-FA). Bathymetry data were collected using two personal watercraft (PWCs) equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9° beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a YSI CastAway CTD during the survey. Positioning...
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This part of the data release presents topography data from northern Monterey Bay, California collected in March 2016 using a tripod-mounted Riegl VZ-1000 lidar scanner (USGS Field Activity 2016-627-FA). For each area surveyed, the scanner was placed at several positions which were selected to provide maximum line-of-sight coverage of the area of interest. Scans were typically conducted in panoramic mode, creating a detailed point cloud of all unobstructed surfaces in a 360 degree view of the scanner. At each scan position, co-registered photographic imagery was also collected with a scanner mounted DSLR camera. Scanner registration was performed by placing four or more cylindrical or flat reflective tripod-mounted...
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This portion of the USGS data release presents bathymetry data collected during surveys performed in northern Monterey Bay, California in March 2015 (USGS Field Activity Number 2015-625-FA). Bathymetry data were collected using two personal watercraft (PWCs) equipped with single-beam sonar systems and global navigation satellite system (GNSS) receivers. The sonar systems consisted of an Odom Echotrac CV-100 single-beam echosounder and 200 kHz transducer with a 9° beam angle. Raw acoustic backscatter returns were digitized by the echosounder with a vertical resolution of 1.25 cm. Depths from the echosounders were computed using sound velocity profiles measured using a YSI CastAway CTD during the survey. Positioning...
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This portion of the USGS data release presents topography data collected during surveys performed along northern Monterey Bay, California, in March 2015 (USGS Field Activity Number 2015-625-FA). Topographic profiles were collected on foot with GNSS receivers mounted on backpacks. Prior to data collection, vertical distances between the GNSS antennas and the ground were measured using a tape measure. Hand-held data collectors were used to log raw data and display navigational information allowing surveyors to navigate survey lines spaced at 50- to 250-m intervals along the beach. Profiles were surveyed from the landward edge of the study area (either the base of a bluff, engineering structure, or just landward of...
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Observing and counting bats is extremely difficult. Bats hide during the day, fly in darkness, and most species in the United States (US) become inactive and inaccessible in cryptic hibernation sites for 7-8 months each year. More than 40 different species of bats occur year-round in the US, yet reasonable population estimates exist for very few. Populations of US bats face new and unprecedented threats from white-nose syndrome (WNS) and industrial wind turbines. Like WNS, wind energy development might adversely affect entire populations of bats. Species of bats dying at wind turbines in the greatest numbers rank among the most cryptic, elusive, and poorly understood. Hoary bats (Lasiurus cinereus) compose approximately...
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Wild insect pollination has significant positive effects on pollinator-dependent crop production. To assess the spatial distribution of demand for wild insect pollination, we mapped pollinator-dependent crops based on the 2011Cropland Data Layer.
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Aspect is the compass direction toward which a slope faces, measured in degrees from North in a clockwise direction from 0 to 360. Aspect was generated using ArcGIS Spatial Analyst, with the USGS National Elevation Dataset as input. For quality information regarding the National Elevation Dataset, see http://nationalmap.gov/elevation.html. These data cover the entire continental U.S. and are a continuous data layer. These raster data have a 30 m x 30 m cell resolution. This aspect data set is considered official foundational data for the GAP species modeling process. The data have been made available provisionally to enhance understanding and use of GAP species data.
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This data set includes results for hormone and pharmaceutical compounds analyzed in environmental and quality-control samples collected by the USGS National Water-Quality Assessment Project during 2013 through 2015 for a study of groundwater resources used for drinking-water supply across the United States. Hormone and pharmaceutical results are provided for environmental samples collected at 1,120 wells or springs; selected ancillary data, such as principal aquifer, well depth, and land-use information also are provided for the sampled sites. The types of quality-control samples included in this data set are blanks, matrix spikes, and replicates collected at field sites or field offices. Included in this data...
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Album caption, slide description, and slide index card: MSH-Branch of Exhibits no. 8cp: Mount St. Helens. Aerial view. Minor steam eruption from summit crater, from northeast, 10:15 a.m. Skamania County, Washington. May 31, 1980. (Photo by T. Casadevall) (Same as MSH-BE-VOLC-0022ct)
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Album caption: Plane table station on a lava boulder 8800 feet above sea level. The smooth surface in the foreground is a mawai or molteh lava channel. 3.11.25. 11:00 a.m. No index card.
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Album caption: Rio Blanco Valley from a point on Insular Highway No. 191 south of El Yunque. The smokestack is at Central Pasto Viejo. Sugar cane is grown extensively in these valleys. No index card.
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Album caption and index card: Sixty foot terrace on Nehalem River at Mist, Columbia County, Oregon. n.d.
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Album caption: Pulpwood in the west branch og the Penobscot River at Debsconeag Falls. No index card.


map background search result map search result map USGS Gap Analysis Project - Additional Data – Aspect Basement domain map of the conterminous United States and Alaska (COPY07) Nearshore bathymetry data from northern Monterey Bay, California, March 2015 Topography data from northern Monterey Bay, California, March 2015 Nearshore bathymetry data from northern Monterey Bay, California, March 2016 Terrestrial lidar data from northern Monterey Bay, California, March 2016 Nearshore bathymetry data from northern Monterey Bay, California, September 2016 Topography data from northern Monterey Bay, California, March 2017 Fish/Judy Creek Watershed map Vegetation dynamics related to climate and  land use in Puerto Rico and the US Virgin Islands Rio Blanco Valley. Puerto Rico. n.d. Environmental and Quality-Control Data Collected by the USGS National Water-Quality Assessment Project for Hormones and Pharmaceuticals in Groundwater Used as a Source of Drinking Water Across the United States, 2013-15 Pulpwood in the west branch og the Penobscot River at Debsconeag Falls. Maine. circa 1930. Plane table station on a lava boulder 8800 feet above sea level. Hawaii. 1925. No caption. Alaska. circa 1899. Alaska. circa 1899. Sixty foot terrace on Nehalem River at Mist. Columbia County, Oregon. n.d. Pollinator-Dependent Crops in the Southeast United States (2011) Genomic Determination of Hoary Bat Population History and Trend Aerial view of minor steam eruption from Mount St. Helens summit crater. Skamania County, Washington. 1980. Terrestrial lidar data from northern Monterey Bay, California, March 2016 Nearshore bathymetry data from northern Monterey Bay, California, September 2016 Topography data from northern Monterey Bay, California, March 2017 Topography data from northern Monterey Bay, California, March 2015 Nearshore bathymetry data from northern Monterey Bay, California, March 2015 Nearshore bathymetry data from northern Monterey Bay, California, March 2016 Aerial view of minor steam eruption from Mount St. Helens summit crater. Skamania County, Washington. 1980. Vegetation dynamics related to climate and  land use in Puerto Rico and the US Virgin Islands Pulpwood in the west branch og the Penobscot River at Debsconeag Falls. Maine. circa 1930. Sixty foot terrace on Nehalem River at Mist. Columbia County, Oregon. n.d. Fish/Judy Creek Watershed map Plane table station on a lava boulder 8800 feet above sea level. Hawaii. 1925. Pollinator-Dependent Crops in the Southeast United States (2011) No caption. Alaska. circa 1899. Alaska. circa 1899. USGS Gap Analysis Project - Additional Data – Aspect Environmental and Quality-Control Data Collected by the USGS National Water-Quality Assessment Project for Hormones and Pharmaceuticals in Groundwater Used as a Source of Drinking Water Across the United States, 2013-15 Genomic Determination of Hoary Bat Population History and Trend Basement domain map of the conterminous United States and Alaska (COPY07)