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.).

30-Day Readmissions by Hospital 2015-18

This layer displays the rate of 30-day hospital readmissions (overall). Data are reported at the hospital level for the July 2017 – June 2018 time period. Data are obtained from the Centers for Medicare and Medicaid Services (CMS) Hospital Compare dataset.

30-Day Readmissions for Pneumonia by Hospital, 2015-18

This layer displays the rate of 30-day hospital readmissions for patients with an initial hospital admission for pneumonia. Data are reported at the hospital level for the July 2015 – June 2018 three-year period. Data are obtained from the Centers for Medicare and Medicaid Services (CMS) Hospital Compare dataset.

National Survey of Children’s Health

The National Survey of Children’s Health (NSCH) provides rich data on multiple, intersecting aspects of children’s lives—including physical and mental health, access to quality health care, and the child’s family, neighborhood, school, and social context.

Timley and Effective Stroke Care by Hospital, 2018-19

This layer displays the percentage of patients who came to the emergency department with stroke symptoms who received brain scan results within 45 minutes of arrival. 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.

Drought Severity, 2019

This layer displays the percentage of weeks in Any Drought based on analysis of US Drought Monitor weekly drought data files for the year 2019.