The dataset represents major hydrographic features in the St Johns River Water Management District. Also, provides representation of the Atlantic Ocean.

Florida's Water Data2025-01-14 更新10

500K Karst Potential

This layer contains polygons which represent the geologic formations from the 1:500,000-scale 1988 Geologic Map of Kentucky, which was compiled by Martin C. Noger (KGS) from the 1981 Geologic Map of K

LOJIC Open Data Portal10

500K Karst Potential

This feature layer is part of Kentucky Geological Survey (KGS) Data. This layer contains polygons which represent the geologic formations from the 1:500,000-scale 1988 Geologic Map of Kentucky

KyGeoNet Open Data Portal2026-07-02 更新20

Hydro River USGS 500K