Name (click for metadata and to rate record) Description Agency Subagency Category Last updated date
FWS Wetlands Data Extraction Tool Abstract: This extraction tool enables shapefile extraction of wetland vector digital data. This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the conterminous 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 undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. Purpose: The present goal of the Service is to provide the citizens of the United States and its Trust Territories with current geospatially referenced information on the status, extent, characteristics and functions of wetlands, riparian, deepwater and related aquatic habitats in priority areas to promote the understanding and conservation of these resources. Supplemental_Information: The wetland maps were produced as topical overlays using U.S. Geological Survey topographic maps as the base. The hard copy product is a composite map showing topographic and planimetric features from the USGS map base and wetlands and deepwater habitats from the Service's topical overlay. Thus, the data are intended for use in publications, at a scale of 1:24,000 or smaller. Due to the scale, the primary intended use is for regional and watershed data display and analysis, rather than specific project data analysis. The map products were neither designed or intended to represent legal or regulatory products. Comments regarding the interpretation or classification of wetlands or deepwater habitats can be directed to the U.S. Fish and Wildlife Service, Division of Federal Program Activities, Branch of Habitat Assessment <http://www.fws.gov/duspit/contactus.htm> These data were developed in conjunction with the publication Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service, Washington, DC. FWS/OBS-79/31. Alpha-numeric map codes have been developed to correspond to the wetland and deepwater classifications described. These spatial data are not designed to stand alone. They form topical overlays to the U.S. Geological Survey 1:24,000 or 1:25,000 scale topographic quadrangles. Note that coastline delineations were drawn to follow the extent of wetland or deepwater features as described by this project and may not match the coastline shown in other base maps. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Arc/INFO format, this metadata file may include some Arc/INFO-specific terminology. DOI FWS Geography and Environment 2012-09-12 14:01:52
USGS Volcanic Activity Alert-Notification System Description Website provides plain-English description of the alert notification system that the USGS has adopted nationwide for characterizing the level of unrest and eruptive activity at the volacnoes and explanation of the alert levels and aviation color codes. DOI USGS Science and Technology 2012-09-13 09:16:57
USGS U.S. Volcanoes Current Alerts Website provides plain-English description of the alert notification system that the USGS has adopted nationwide for characterizing the level of unrest and eruptive activity at the volacnoes and explanation of the alert levels and aviation color codes. DOI USGS Science and Technology 2012-09-13 09:16:57
2010-2011 Hydrologic Survey of Franklin D. Roosevelt Reservoir (Lake Roosevelt) Reclamation's survey of Franklin D. Roosevelt Reservoir (Lake Roosevelt) began in October 2010 and continued during portions of June, July, and August of 2011. The primary purpose was to develop detailed digital reservoir topography. The underwater survey was conducted between water surface elevation 1,260 and spilling elevation 1,290 (project datum in feet). This study measured the project vertical datum around 2.5 feet lower than the North American Vertical Datum of 1988 (NAVD88). The generated reservoir topography elevations were tied to NAVD88. The surface area and volume computations from the topography were shifted -2.5 feet to match the Grand Coulee project's vertical datum. The underwater survey used sonic depth recording equipment interfaced with real-time global positioning systems that provided continuous sounding positions throughout the underwater portion of the reservoir covered by the survey vessels. The 2010-11 reservoir topography was generated by importing digital coverages from 1974 aerial photogrammetry, 2007 bathymetry of the upper reservoir, and 2009-10 Light Detection and Ranging (LiDAR) surveys combined with the 2010-11 bathymetric data. The 2010-11 bathymetric data was the first detailed bottom information of the deeper portions of Lake Roosevelt, below elevation 1,160. As of August 2011, at reservoir water surface elevation 1,290.0, the surface area was 81,991 acres with a total capacity of 9,715,346 acre-feet and an active capacity, between elevation 1,208.0 and 1,290.0, of 5,349,560 acre-feet. DOI USBR Geography and Environment 2012-09-13 09:16:57
Glendo Reservoir 2003 Sedimenation Survey The Bureau of Reclamation (Reclamation) surveyed Glendo Reservoir in May and July of 2003 and January 2005 to develop a new topographic map and compute a present storage-elevation relationship (area-capacity tables). The 2003 underwater survey, conducted between lake elevation 4626 (feet) and 4629 (project datum), used sonic depth recording equipment interfaced with a global positioning system (GPS) that gave continuous sounding positions throughout the underwater portions of the reservoir covered by the survey vessel. In January 2005, a GPS land survey was conducted on a small portion of the upper reach of the reservoir. The above-water topography was determined by digitizing reservoir contours from the U.S. Geological Survey quadrangle (USGS quad) maps. The new topographic map of Glendo Reservoir was developed from the digitized USGS quad contours (adjusted in the upper reach using the January 2005 data) and the 2003 underwater data. Due to the lack of complete above water data, this study assumed no change since the 1972 reservoir resurvey from elevation 4640 and above. DOI USBR Geography and Environment 2012-09-13 09:16:57
Salton Sea 1995 Hydrographic GPS Survey The Bureau of Reclamation surveyed the underwater area of Salton Sea from November 1994 through February 1995 to compile field data for developing a topographic map and computing a storage-elevation relationship (area-capacity tables). The bathymetric survey used sonic depth recording equipment interfaced with a GPS (global positioning system) that gave continuous sounding positions throughout the Salton Sea. The underwater topography was developed by a computer graphics program using the collected data. The above-water topography was determined by digitizing contour lines from the United States Geological Survey quadrangle (USGS quad) sheets that cover the Salton Sea area. The new topographic map of the Salton Sea is a combination of the digitized contours and the underwater measured topography. DOI USBR Geography and Environment 2012-09-13 09:16:57
USGS U.S. Volcanoes with Elevated Status Website provides list of elevated status volcanoes with access to activity updates and/or information releases for changes in activity at the volcanoes. activity at each volcano changes. DOI USGS Science and Technology 2012-09-13 11:14:08
USGS Volcano Observatory Notices for Aviation (VONA) Website provides succint, plain-English messages aimed at dispatchers, pilots, and air traffic controllers to inform them of volcanic unrest and eruptive activity that could produce ash-cloud hazards. DOI USGS Science and Technology 2012-09-13 11:14:08
USGS Volcano Notification Service (VNS) Website provides a subscription service to receive an email when changes occur in the activity levels for monitored U.S. volcanoes and/or when information releases are sent out. Updates and releases happen either daily, weekly, or monthly or when activity at a volcano increases or decreases. Users are able to select regions, volcanoes, or alert levels as filters. DOI USGS Science and Technology 2012-09-13 11:14:08