This layer displays information about residents of assisted housing properties in counties across the US. Characteristics include the percent of disabled, elderly, and single-parents in assisted housing facilities.
Fatal Motor Vehicle Crashes by County, 2014-2018
This layer displays the number and rate of fatalities from motor vehicle crashes occurring between 2014 and 2018, aggregated by county. Unlike typical mortality data, this data layer represents the location of the fatal crash, and not the county of the decedent’s residence.
Multi-Family Assisted Housing
Layer displays the approximate locations of Multifamily Assisted Housing properties that are monitored by the US Department of Housing and Urban Development (HUD). The three largest assistance programs for Multifamily housing are Section 8 (Project Based Assistance), Section 202 (Supportive Housing for the Elderly), and Section 811 (Supportive Housing for Persons with Disabilities).
Fatal Motor Vehicle Crashes by Location, 2017
This layer displays the location or intersection of fatal crashes occurring in 2017. This layer can be toggled to view fatal crashes involving a drunk driver, and crashes with pedestrian fatalities.
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.).
Watershed Boundary Dataset, 10-Digit Hydrologic Units
The 10-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the fifth 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 10-digit hydrologic unit, or watershed, divides sub-basins into smaller management areas. There are 18,679 10-digit hydrologic units with an average size of 226 square miles (585 sq. km.).
Watershed Boundary Dataset, 6-Digit Hydrologic Units
The 6-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the third level hydrologic subdivision of the United States. A 6-digit hydrologic unit may subdivide a 4-digit hydrologic unit or may be equivalent. There are 401 6-digit hydrologic units with an average size of 10,486 square miles (27,159 sq. km.).