This layer displays areas defined as Hard to Count by the United States decennial census. Data is from the US Census Planning Database and included 2010 Response Rates, Mail Return Rates, Low Response Score, and ACS Response Rates. Learn more about US Census Hard to Count areas.
Locations of Primary Care Physicians
This layer displays the locations of all primary care physicians with a CMS National Provider Identifier (NPI). Primary care physicians are those MDs or DOs specializing in family practice, general practice, pediatric medicine, or internal medicine. Data are from the Centers for Medicare and Medicaid Services (CMS) August 2019 National Provider Identifier (NPI) downloadable file.
2010 Census Mail Return Rate
This layer displays areas defined as Hard to Count by the United States decennial census. Data is from the US Census Planning Database and included 2010 Response Rates, Mail Return Rates, Low Response Score, and ACS Response Rates. Learn more about US Census Hard to Count areas.
Coal Fields
This data set shows the coal fields of Alaska and the conterminous United States. Most of the material for the conterminous United States was collected from James Trumbull’s “Coal Fields of the United States, Conterminous United States” map (sheet 1, 1960). The Gulf Coast region was updated using generalized, coal-bearing geology obtained from State geologic maps. The Alaska coal fields were collected from Farrell Barnes’s “Coal Fields of the United States, Alaska” map (sheet 2, 1961).
Wind Turbine Density
This layer was created using point data of Wind Turbine locations within the U.S. from USGS. Density was calculated using a circular neighborhood of 1 mile and each cell is 1 square mile in area.
Crude Oil Pipelines
This layer represents crude oil pipelines throughout the U.S. and part of Canada.
Watershed Boundary Dataset, 2-Digit Hydrologic Units
The 2-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the major water resource regions of the United States. A water resource region is the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units. This first level of classification divides the United States into 22 major geographic areas, or regions. These geographic areas contain either the drainage area of a major river or the combined drainage areas of a series of rivers.
Fatal Motor Vehicle Crashes Involving Alcohol, 2014-2018
This layer displays the number and percentage of fatal vehicle crashes involving alcohol occurring between 2014 and 2018. Data are aggregated by county of occurrence.
Watershed Boundary Dataset, 8-Digit Hydrologic Units
The 8-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the fourth level hydrologic subdivision of the United States. A hydrologic unit can accept surface water from upstream drainage areas and may define a drainage area with single or multiple outlet points. An 8-digit hydrologic unit, or sub-basin, is a common management unit for water resource planning and analysis. There are 2,362 8-digit hydrologic units with an average size of 1,783 square miles (4,619 sq. km.).
Watershed Boundary Dataset, 12-Digit Hydrologic Units
The 12-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the sixth level hydrologic subdivision of the United States. A hydrologic unit can accept surface water from upstream drainage areas and may define a drainage area with single or multiple outlet points. A 12-digit hydrologic unit, or subwatershed, supports water resource management and planning activities at a localized and site-specific level. There are 101,779 12-digit hydrologic units with an average size of 41 square miles (107 sq. km.).