Science Analytics and Synthesis (SAS)

Data and Tools

Filter Total Items: 52
Date published: July 1, 2018

U.S. Geological Survey - Gap Analysis Project Species Habitat Maps CONUS_2001

Gap Analysis Project (GAP) habitat maps are predictions of the spatial distribution of suitable environmental and land cover conditions within the United States for individual species. Mapped areas represent places where the environment is suitable for the species to occur (i.e. suitable to support one or more life history requirements for breeding, resting, or foraging), while areas not...

Date published: July 1, 2018

U.S. Geological Survey - Gap Analysis Project Species Range Maps CONUS_2001

GAP species range data are coarse representations of the total areal extent a species occupies, in other words the geographic limits within which a species can be found (Morrison and Hall 2002). These data provide the geographic extent within which the USGS Gap Analysis Project delineates areas of suitable habitat for terrestrial vertebrate species in their species habitat maps. The range maps...

Date published: January 1, 2018

Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Special Features Points

The Central Mojave Special Features shapefile provides point locations for known or potential places where vegetation alliances or unique stands occurred (from 1997-1999) with less than 5 hectares of spatial extent. These designations were provided separately from the Mojave Vegetation Polygons because the target standard for the polygons was a minimum mapping unit (MMU) of 5 hectares, thus...

Date published: January 1, 2018

Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Mojave Vegetation Polygons

The Central Mojave Vegetation Polygons shapefile represents areas of the Mojave Desert classified into vegetation classes or alliances representative of the area from 1997-1999. The classification of these areas were derived from context gathered in the field data, repeat photographs and additional satellite imagery that is not included in this data release. The original map coverage was...

Date published: January 1, 2018

Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Plots Points and Repeat Photographs

The Mojave Plots Points data are 1,219 plot locations in the Central Mojave Desert where field data were recorded and repeat photographs were taken from 1997-1999 to provide context for the classification of the Central Mojave Desert into various vegetation classes. The 1,219 plot locations in the plots points shapefile (plots_points.shp) are each assigned a unique identifier called the...

Date published: January 1, 2018

Central Mojave Desert Vegetation Mapping Project, California, 1997-1999

The U.S. Geological Survey (USGS) Data at Risk (DaR) team partnered with the USGS Southwest Biological Science Center (SBSC) to preserve and release tabular data, shapefiles and field photographs of the Central Mojave Desert from 1997-1999. The data were originally collected as part of an effort through the Desert Managers Group (DMG) to develop scientific information on the distribution and...

Date published: January 1, 2018

Magnetotelluric Data from the San Andreas Fault, Parkfield CA, 1990

The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Data at Risk (DaR) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Parkfield, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989 and 1994. The...

Date published: January 1, 2018

River Channel Survey Data, Redwood Creek, California, 1953-2013

Dr. Richard Janda of the USGS began a channel monitoring program in Redwood Creek in northern coastal California in 1973. The USGS continued this work through 2013, when the Research Geologist, Dr. Mary Madej retired. This effort produced 40 years of channel change data in rivers that were disrupted by severe erosion following timber harvest of old-growth redwood forests, a portion of the...

Date published: January 1, 2018

USGS Menlo Park vertebrate Cenozoic Paleontology Collection

Data is primarily type fossils from the USGS Menlo Park vertebrate Cenozoic Paleontology Collection created and maintained by U.S. Geological Survey (USGS). Data was collected by paleontologist Charles A. Repenning during his forty years of service within the USGS Paleontology And Stratigraphy Branch. His catalog was converted into digital form, Excel and Filemaker Pro database. The Catalog is...

Date published: January 1, 2018

Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Field Data

The Mojave Vegetation field data were collected to provide context for the classification of the Central Mojave Desert into various vegetation classes. The field data consist of five CSV tables, recovered from their original Microsoft Access format, that together describe the vegetative, environmental and geomorphic properties of the Central Mojave Desert at the time of collection, 1997-1999....

Date published: May 8, 2017

National Fish Habitat Partnership (NFHP) 2015 Cumulative Habitat Condition Indices with Limiting and Severe Disturbances for the Conterminous United States linked to NHDPlusV1 v2.0

This CSV file contains cumulative fish habitat condition index (HCI) scores generated for river reaches of the conterminous United States as well as indices generated specifically for four spatial units including local and network catchments and 90 m local and network buffers of river reaches. Note that the cumulative HCI score is determined from limiting index scores generated for the four...

Date published: April 7, 2017

Bathythermograph Data, Lake Michigan, 1954

In 1954 researchers at the USGS Great Lakes Science Center conducted 11 research cruises on Lake Michigan during which 779 bathythermographs were cast to collect temperature profile data (temperature at depth). Bathythermographs of that era recorded water pressure and temperature data by mechanically etching them as a curve on a glass slide. Data was collected from the glass slide by...