Watershed Boundary Dataset, 4-Digit Hydrologic Units

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 … Continued

Food Hubs

Layer displays the location of food hubs across the US. Data was obtained from the USDA Local Food Directories on July 12, 2025.

On-Farm Market Sites

Layer displays the location of on-farm markets across the US. Data was obtained from the USDA Local Food Directories on July 12, 2025.