Navigation Charts

Navigation chart imageNavigation Charts are 8½” x 14” scaled color maps that indicate important navigation features of special interest. Features shown on the charts include channel sailing line, U.S. navigation lights, daymarks, arrival point marks for locks, normal pool elevations, mouth of tributary streams, location of bars, channel buoys, bridges, aerial and submarine crossings, docks, terminals, landings and navigation structures. No soundings are shown. A listing of small boat harbors, ramps, landings and commercial river terminals are included at the back of each navigation chart book.

Download Pittsburgh District Inland Electronic Navigation Charts (IENC)

The Inland Electronic Navigation Charts (IENC) are digital charts referred to as “cells”. The cells are updated on a monthly basis to allow the general public to stay up-to-date. There are RSS feeds set up for each of the cells. The USACE does not require anyone to create a Login to download IENC data, but we do ask for some basic information from the requestor to be used for statistical purposes. The cells are currently available in three different formats, linked below:

Google Earth KML

IHO S-57 cells

ESRI shapefiles

Download Pittsburgh District Navigation Chart Books (PDF)

USACE Navigation Charts are maps that indicate features important for navigation on the waterways. Features shown on the Charts include: channel, sailing line, navigation lights, daymarks, arrival points for locks, normal pool elevations, tributaries, location of bars, channel buoys, bridges, aerial and submarine crossings, docks, terminals, landings, and more.

Allegheny River Navigation Charts
Monongahela River Navigation Charts
Ohio River Navigation Charts

Soundings are NOT shown on the Navigation Charts; the only depths illustrated are the 9 Foot Depth Contours within the navigable waterways. Soundings for many miles of the Pittsburgh District’s navigable waterways are available for download here in basic ASCII text format.
Purchase Navigation Chart Books (spiral bound hardcopy)
Allegheny, Monongahela and Ohio River Navigation Charts are available for purchase from the U.S. Government Printing Office (GPO) via: the GPO Online Bookstore, by mail order with the GPO Order Form, or by calling the GPO Customer Service Center toll-free at (866) 512-1800. Please note that the Pittsburgh District Office no longer maintains any stock of hardcopies to be sold locally or via mail order.


Publicly Accessible GIS Sites

The U.S. Geological Survey (USGS) collects hydrologic and water-quality information and provides access to water data, publications, and maps, as well as to recent water projects and events. Their website is located at:

The Pennsylvania Spatial Data Access (PASDA) is the official public access geospatial information clearinghouse for the Commonwealth of Pennsylvania and has served for fifteen years as Pennsylvania's node on the National Spatial Data Infrastructure, Geospatial One-Stop, and the National Biological Information Infrastructure. PASDA was developed by the Pennsylvania State University as a service to the citizens, governments, and businesses of the Commonwealth. PASDA is a cooperative project of the Governor's Office of Administration, Office for Information Technology, Geospatial Technologies Office and the Penn State Institutes of Energy and the Environment of the Pennsylvania State University. Their website is located at:

The Ohio Statewide Imagery Program (OSIP) is a partnership between State, Local and Federal government agencies to develop high-resolution imagery and elevation data for the State of Ohio to benefit Geographic Information System users at all levels of government. Accurate imagery and elevation data serve as the backbone for the development of additional data sets maintained and accessed by government decision makers and the public. Their website is located at: