The 4-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the second level hydrologic subdivision of the United States. A 4-digit hydrologic unit includes the area drained by a river system, a reach of a river and its tributaries in that reach, a closed basin(s), or a group of streams forming a coastal drainage area. There are 240 4-digit hydrologic units with an average size of 17,521 square miles (45,378 sq. km.).
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.
Locations of Dental Care Providers
This layer displays the locations of all dental health care providers with a CMS National Provider Identifier (NPI). Data are from the Centers for Medicare and Medicaid Services (CMS) February 2020 National Provider Identifier (NPI) downloadable file.
Location Affordability Index for Family at AMI
This layer displays the estimated percentage of household income for housing and transportation for a family earning the Area Median Income (AMI). The expected values for housing and transportation are modeled by HUD using data from the US Census Bureau and the US Department of Transportation, including:
- The average household size for a family earning AMI in the neighborhood
- The average number of workers, vehicles, and vehicle miles travelled for a family in the neighborhood
- The average utility and rental costs or average utility and mortgage costs for a housing unit to accommodate the family size above
- The proportion of housing units that are either rentals or owner-occupied in the neighborhood
Note: The LAI does not predict what families are actually paying to live in a particular area, but rather what a family would pay (either in USD or as a percentage of income) if average or reasonable housing and commuting conditions for a particular neighborhood were achieved.
Timley and Effective Heart Attack Care by Hospital, 2018-19
This layer displays the average number of minutes before outpatients with chest pain or possible heart attack who needed specialized care were transferred to another hospital. Data are reported at the hospital level for the July 2018 – June 2019 period. Data are obtained from the Centers for Medicare and Medicaid Services (CMS) Hospital Compare dataset.
Incarceration Rate by Census Tract, 2010
This layer displays the estimated 2010 incarceration rate for persons born in the reference census tract. Data are part of the 2018 Opportunity Insights Atlas, prepared by researchers at Harvard University. Data are available at the county and census tract levels.
Preventable Hospitalizations by County, 2017
This layer displays the total number and rate of preventable hospitalization events among Medicare beneficiaries. Preventable hospitalizations include hospital admissions for one or more of the following conditions: diabetes with short-term complications, diabetes with long-term complications, uncontrolled diabetes without complications, diabetes with lower-extremity amputation, chronic obstructive pulmonary disease, asthma, hypertension, heart failure, bacterial pneumonia, or urinary tract infection. Rates are presented per 100,000 beneficiaries.
Percentage of Students Eligible for Free or Reduced Price Lunch by School, 2017-2018
This layer displays information about free and reduced price lunch eligibility among public school students. This point-level data is acquired from the 2017-2018 National Center for Education Statistics (NCES) Common Core of Data (CCD) Public School Universe Survey dataset.
Breast Cancer Screening by County, 2017
This layer displays the percentage of female Medicare beneficiaries age 35 and older that received an annual breast exam or mammogram in the latest report year (2017).
Percentage of Students Eligible for Free or Reduced Price Lunch by School, 2018-2019
This layer displays information about free and reduced price lunch eligibility among public school students. This point-level data is acquired from the 2018-2019 National Center for Education Statistics (NCES) Common Core of Data (CCD) Public School Universe Survey dataset.