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1. National Atlas of the United States of America from the U.S. Geological Survey (USGS) [USGS_NATIONALATLAS]
The National Atlas updates a large bound collection of paper maps that was published in 1970. Like its predecessor, this edition promotes greater national geographic awareness. It delivers ...


2. Pine Flatwood - Marsh Ecotone Boundary data for North Florida [brdnwrc0003]
Wildlife preserves and refuges in coastal areas of our nation are slowly being inundated by increasing sea level. Warming of our global environment threatens to speed the rate of sea-level rise and ...


3. Databases and Simplified Geology for Mineralized Areas, Claims, Mines and Prospects in Colorado [USGS_OFR_2003_090]
This data release contains mineral resource data for metallic and nonmetallic mineral sites in the State of Colorado. Along with the resource data, there is additional data, such as mineralized areas ...


4. Annual Peak Discharge and Stage of US Surface Water; USGS [EARTH_LAND_USGS_Water_PKFIL]
Originally available as hard copy publication, the Annual Peak Discharge and Stage of US Surface Water data will be made available to the public via the World Wide Web. The URL of the ...


5. Aquatic Ecoregions in the United States GIS Data for the EPA Clean Air Mapping and Analysis Program (C-MAP) [AQUAECO]
Ecoregions are based on perceived patterns of a combination of causal and integrative factors including land use, land surface form, potential natural vegetation, and soils (Omernik, 1987). This is ...


6. Arctic National Wildlife Refuge (ANWR) Data Base, U.S. Fish and Wildlife Service, Alaska [EARTH_LAND_USFWS_AK_Wildlife1]
The Arctic National Wildlife Refuge (ANWR) is the most northern and one of the largest Refuges within America's National Wildlife Refuge System. The Arctic Refuge is managed by the U.S. ...


7. Assessment of Nitrogen Loading in the Upper Connecticut River Basin, New Hampshire, Vermont, and Massachusetts [USGS_CT_NLOAD]
The primary pollutant contributing to hypoxia in Long Island Sound (LIS) is nitrogen. The U.S. Geological Survey (USGS), in cooperation with the New England Interstate Water Pollution Control Commission ...


8. Assessment of the Alluvial Sediments in the Big Thompson River Valley, Colorado [USGS-DDS-066]
To obtain subsurface geologic information about the alluvium in the Big Thompson River valley, S -wave refraction data were collected along three roads that cross the valley. The traveltimes were ...


9. Atmospheric Deposition of Mercury in the Boston Area [USGS_NAWQA_HG_DEP]
Atmospheric deposition has been found to be the dominant source of mercury (Hg) in New England's aquatic environment (Krabbenhoft and others, 1999; Northeast States for Coordinated Air Use Management ...


10. BLM OR/WA Hydrography Project (HYD) [BLM_OR_WA_GIS_HYDRO_LAYER]
Oregon/Washington BLM has created an integrated approach for aquatics information and is promoting consistent standards and protocols for managing hydrographic information across our organization. ...


11. BLM OR/WA Interagency Vegetation Mapping Project (IVMP) [BLM_OR_WA_VEG_MAPPING]
(Summary adapted from Interagency Vegetation Mapping Project) The Regional Interagency Executive Committee decided to accept effectiveness monitoring plans for the Northwest Forest Plan. Effectiveness ...


12. Baseline and Historic Depositional Rates and Lead Concentrations, Floodplain Sediments, Lower Coeur d'Alene River, Idaho [USGS_OFR_2004_1211]
Lead-rich sediments, containing at least 1000 ppm of lead (Pb), and derived mainly from discarded mill tailings in the Coeur d'Alene mining region, cover about 60 km2 of the 80-km2 floor of the main ...


13. Benthic-invertebrate, fish-community, and streambed-sediment-chemistry data for steams in the Indianapolis metropolitan area, Indiana, 2009-2012 [USGS_IndianapolisMetroStreams]
Aquatic-biology and sediment-chemistry data were collected at seven sites on the White River and at six tributary sites in the Indianapolis metropolitan area of Indiana during the period 2009 through ...


14. BioData - Aquatic Bioassessment Data for the Nation [USGS_BioData]
The U.S. Geological Survey (USGS) BioData Retrieval system provides access to aquatic bioassessment data (biological community and physical habitat data) collected by USGS scientists from stream ecosystems ...


15. Blackwater National Wildlife Refuge Boundary in Maryland [USFWS_CSDS_blkbnd]   PARENT METADATA
This dataset contains boundary layers for the Blackwater National Wildlife Refuge Boundary in Maryland. National Wildlife Refuges are federal lands managed by the U.S. Fish and Wildlife Service (USFWS). ...


16. Changes in Streamflow, Concentrations, and Loads in Selected Nontidal Basins in the Chesapeake Bay Watershed, 1985-2006 [USGS_OFR_2007_1372]
Water-quality and streamflow data from 34 sites in nontidal parts of the Chesapeake Bay watershed are presented to document annual nutrient and sediment loads and trends for 1985 through 2006, as ...


17. Channel-Morphology Data for the Tongue River and Selected Tributaries, Southeastern Montana, 2001-02 [USGS_OFR_2004_1260]
Coal-bed methane exploration and production have begun within the Tongue River watershed in southeastern Montana. The development of coal-bed methane requires production of large volumes of ground ...


18. Chemistry of Stream Sediments and Surface Waters in New England [USGS_OFR_2004_1026]
This online publication portrays regional data for pH, alkalinity, and specific conductance for stream waters and a multi-element geochemical dataset for stream sediments collected in the New England ...


19. Coastal Erosion and Wetland Change in Louisiana: Selected USGS Products [USGS-DDS-79]
Louisiana contains 25 percent of the vegetated wetlands and 40 percent of the tidal wetlands in the 48 conterminous States. These critical natural systems are being lost. Louisiana leads the Nation ...


20. Colville River Delta Landcover Data; USGS, Alaska [EARTH_LAND_USGS_AK_Colville1]
Vector and digital data from the Colville River area in Alaska. Data contains land cover classifications derived from Landsat MSS data, aerial photography, and ...


21. Concentrations of Nutrients, Pesticides, and Suspended Sediment in the Karst Terrane of the Sinking Creek Basin, Kentucky, 2004 [USGS_OFR_2006_1091]
Water samples were collected in streams and springs in the karst terrane of the Sinking Creek Basin in 2004 as part of study in cooperation with the Kentucky Department of Agriculture. A total of ...


22. Contribution of Atmospheric Deposition to Pesticide Loads in Surface Water Runoff [USGS_OFR_2005_1307]
A 3.5-year study was conducted to determine the signifcance of atmospheric deposition to the pesticide concentrations in runoff. Both wet and dry atmospheric depostion were collected at six sites ...


23. Creation of a Prototype, Web-based Connecticut River Watershed Atlas [USGS_CT_ATLAS]
During the Connecticut River Watershed Sustainability workshops held in 2004, a common message voiced by participants was the need for a centralized database of information to support assessments ...


24. Defense Mapping Agency Digital Elevation Models, USGS [EARTH_LAND_DMA_DEM_AK1]
Digital elevation data including slope, aspect, and some with solar illumination are provided. Data are registered to a 50 meter UTM map grid. The pixel size can be altered to meet user ...


25. Desert Landforms and Surface Processes in the Mojave National Preserve and Vicinity [USGS_OFR_2004_1007]
Landscape features in the Mojave National Preserve are a product of ongoing processes involving tectonic forces, weathering, and erosion. Long-term climatic cycles (wet and dry periods) have left ...


26. Digital Data Sets Describing Water Use, Toxic Chemical Releases, Metropolitan Areas, and Population Density of the Conterminous United States [USGS_OFR_99-78]
This report contains digital data sets describing water use, toxic chemical releases, metropolitan areas, and population density of the conterminous United States. The data source for the water-use ...


27. Digital Geologic Map and GIS Database of Venezuela [USGS_DS_2006_199]
The digital geologic map and GIS database of Venezuela captures GIS compatible geologic and hydrologic data from the "Geologic Shaded Relief Map of Venezuela," which was released online as U.S. Geological ...


28. Digital Line Graphs of U.S. Streams for the EPA Clean Air Mapping and Analysis Program (C-MAP) [Stream_GIS_USGS]
This is a 1:2,000,000 coverage of streams for the conterminous United States. This coverage was intended for use as a background display for the National Water Summary program. The stream layer was ...


29. Digital Terrain Data Sets for Alaska, USGS [EARTH_LAND_USGS_DEM_AK1]
This data set contains up to nine types of digital elevation data: 1-1 degree blocks, 2-1 degree x 3 degree mosaic of elevation (latitude/longitude coordinate system), 3-1 ...


30. Digital drainage basin boundaries of named streams in Pennsylvania [USGS_PA_DIGIT]
In 1989, the Pennsylvania Department of Environmental Resources (PaDER), in cooperation with the U.S. Geological Survey, Water Resources Division (USGS published the Pennsylvania (PA) Gazetteer ...


31. Digital hydraulic conductivity values [USGS_ofr96-446_cond]
This data set was created for a project to develop data sets to support ground-water vulnerability analysis. The objective was to create and document a digital geospatial data set from a published ...


32. Digital map of the saturated thickness of the High Plains Aquifer, 1996-97 [USGS_ofroo-300_SATTK9697]
This data set was created to document the original map (McGuire and Fischer, 1999) produced by the High Plains Water-level Monitoring project and make available the data on this map for use with geographic ...


33. Dissolved Pesticide and Organic Carbon Concentrations Detected in Surface Waters, Northern Central Valley, California, 2001-2002 [USGS_OFR_2004_1214]
Field and laboratory studies were conducted to determine the effects of pesticide mixtures on Chinook salmon under various environmental conditions in surface waters of the northern Central Valley ...


34. Distribution of Holocene Sediment in Chesapeake Bay [USGS_OFR_2004_1235]
The distribution of sedimentary environments presents the limited domain of deposits from "River Input", the flood tide wedge of "Atlantic Sediment", and the extensive region of indigenous, recycled ...


35. ERF1 -- Enhanced River Reach File 1.2 [USGS_erf1]
ERF1 was designed to be a digital data base of river reaches capable of supporting regional and national water-quality and river-flow modeling and transport investigations in the water-resources community. ...


36. ERF1-2 -- Enhanced River Reach File 2.0 [USGS_erfi-2]
This report describes the process of enhancements to the stream reach network, ERF1, which is an enhanced version of EPA's RF1. The U.S. Environmental Protection Agency's reach file (RF1) is a database ...


37. Earthquakes and Planning for Ground Rupture Hazards [SSDP_HAZARD_EARTHQUAKE]
Detailed maps bring a greater resolution to the number and locations of active faults. Preparing maps at a higher resolution requires extensive field study, and with a GIS, information, such as tract ...


38. Effects of Wildfire and Prescribed Fire on Stream Ecosystems in Central Idaho, Western Montana, and Western Oregon, 2001-2011 [USGS_FRESC_Fire_StreamEcosystems]
ABSTRACT: This record documents the fields of datasets (which are contained in Microsoft Excel spreadsheets and MS Access databases) that describe upland, riparian, and stream ecosystems in the following ...


39. Emergency Assessment of Debris-Flow Hazards from Basins Burned by the Cedar and Paradise Fires of 2003, Southern California [USGS_OFR_2004_1011]
These maps present preliminary assessments of the probability of debris-flow activity and estimates of peak discharges that can potentially be generated by debris flows issuing from basins burned ...


40. Environmental Atlas of the Lake Pontchartrain Basin [USGS_OFR_2002_206]
The story of Lake Pontchartrain and its surrounding Basin is a fascinating saga. Created at the end of the last Ice Age, this estuary is much more than just a magnificent natural resource. It has ...


41. Estimated Magnitudes and Recurrence Intervals of Peak Flows on the Mousam and Little Ossipee Rivers for the Flood of April 2007 in Southern Maine [USGS_OFR_2007_1146]
Large amounts of rain fell on southern Maine from the afternoon of April 15, 2007, to the afternoon of April 16, 2007, causing substantial damage to houses, roads, and culverts. This report provides ...


42. Estimates of Ground-Water Recharge Based on Streamflow-Hydrograph Methods: Pennsylvania [USGS_OFR_2005_1333]
This study, completed by the U.S. Geological Survey (USGS) in cooperation with the Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey (T&GS), ...


43. Estimating Water Storage Capacity of Existing and Potentially Restorable Wetland Depressions in a Subbasin of the Red River of the North [USGS_OFR_2007_1159]
Concern over flooding along rivers in the Prairie Pothole Region has stimulated interest in developing spatially distributed hydrologic models to simulate the effects of wetland water storage on peak ...


44. Field Parameters Data (Levesque) [USGS_SOFIA_levesque_field_params]
In 1996, the U.S. Geological Survey began a 4-year study of the flow and nutrient characteristics of three major streams that drain parts of the Everglades National Park. An upward looking acoustic ...


45. Flood of June 4, 2002, in the Indian Creek Basin, Linn County, Iowa [USGS_OFR_2004_1074]
Severe flooding occurred on June 4, 2002, in the Indian Creek Basin in Linn County, Iowa, following thunderstorm activity over east-central Iowa. The rain gage at Cedar Rapids, Iowa, recorded a 24-hour ...


46. Flooding of the Androscoggin River during December 18-19, 2003, in Canton, Maine [USGS_OFR_2005_1176]
The Androscoggin River flooded the town of Canton, Maine in December 2003, resulting in damage to and (or) evacuation of 44 homes. Streamflow records at the U.S. Geological Survey (USGS) streamflow-gaging ...


47. Flow Data (Levesque) [USGS_SOFIA_levesque_flow]
In 1996, the U.S. Geological Survey began a 4-year study of the flow and nutrient characteristics of three major streams that drain parts of the Everglades National Park. An upward looking acoustic ...


48. Flow Velocity and Sediment Data Collected During 1990 and 1991 at National Canyon, Colorado River, Arizona [USGS_DS_2007_246]
During 1990 and 1991, a series of research flows were released from Glen Canyon Dam. Data collected at the streamflow-gaging station on the Colorado River above National Canyon near Supai from that ...


49. Freshwater Flows to Northeastern Florida Bay [USGS_SOFIA_freshwtr_flow]
In 1995, the U.S. Geological Survey (USGS) began a study to gage several major creeks that discharge freshwater into northeastern Florida Bay. This study provides flow, salinity, and water-level data ...


50. GCIP Reference Data Set (GREDS), U.S. Geological Survey Open-File Report 94-388 [GCIP-GREDS]
The data sets on this compact disc are a compilation of several geographic reference data sets of interest to the global-change research community. The data sets were chosen with input ...


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