River Mile Markers

The Navigation Mile Marker dataset is a collection of over 11,000 waterway milepoints that describe the physical locations of individual mile-markers along inland navigation waterways in the United States. The file includes data primarily sourced from the Corps of Engineers Inland Electronic Navigation Charts (IENC) and additionally contains milepoints from the National Oceanic Atmospheric Administration (NOAA), USACE Corps of Engineers Districts (Corps) and other various data sources. The data includes location (latitude, longitude, waterway, mile). Additional attributes included in the data are the unique navigation-unit identifier, waterway name, waterway number, and source.