The Mississippi River (north of St. Louis, MO) and its tributaries (e.g., the Arkansas River, Illinois River, Ohio River, etc.) make use of a series of locks and dams to bring traffic up and down the waterways. Grain generally flows south from the relatively production-rich areas of the Midwest to export ports in Louisiana and feed markets in the southeast.

This dataset provides weekly information on the amount (in tons), location, and commodity of barged grain transiting the following three major points: (1) the last lock on the Mississippi, Mississippi Locks 27 (called "Miss Locks 27" in the dataset), which captures downbound traffic from the Upper Mississippi and Missouri Rivers; (2) the last lock on the Ohio River, Olmsted Locks and Dam (called "Ohio Olmstead" in the dataset), which captures any downbound traffic on the Ohio and Tennessee Rivers; and (3) the last lock on the Arkansas River, Arkansas River Lock and Dam 1 (called "Ark Lock 1" in the dataset).

Ohio Olmsted locks replaced Ohio Locks 52 beginning in November 2018.

Commodities include "corn," "soybeans," "wheat," and "other" (oats, barley, sorghum, and rye).

Combined, these three locks give a sense of barge grain traffic (by commodity) on the Mississippi--since grain shipments heading south from the Upper Mississippi River, Illinois River, Ohio River, and Arkansas River are captured. Note, however, that this data does not include all grain barge movements on the Mississippi Rover System, as some grain originates on the Mississippi below the locking portion (south of St. Louis, MO). Grain traffic originating below Lock 27 on the Mississippi is about 10 to 30 percent of total downbound grain shipments, which varies year to year.

A similar dataset, "Upbound and Downbound Loaded and Empty Barge Movements (Count)," contains information on the count of grain barges moving down the locking system (https://agtransport.usda.gov/d/w6ip-grsn) versus this dataset that shows tonnages.

Data is collected weekly from the U.S. Army Corps of Engineers' Lock Performance Monitoring System.

This data derives from USDA/AMS/Market News/Specialty Crops Program movement data, including only truck and import modes at domestic origins. It includes daily fruit and vegetable refrigerated truck volumes by origin district and commodity (from 2000 to 2010, data is weekly). The Transportation Services Division assigns a broader region to the origins in order to join to refrigerated truck rate and availability data.

The data is collected by AMS market reporters. Truck shipments for all commodities and origins are not available. Those obtainable are reported, but should not be interpreted as representing complete movements of a commodity. Truck shipments are collected at shipping points and include both inter and intrastate movements. They are obtained from various sources, including Federal marketing orders, administrative committees, Federal State inspection service and shippers. Methods used include telephone interviews, faxes, emails, and access to other data sources. The movement data is subject to adjustment as new information becomes available. The latest data will generally be under-reported until revisions are made. Updates to Market News Movement data can happen daily, weekly, monthly, and can happen at any time during the season. The Transportation Services Division updates our data from Market News weekly, including historical revisions.

Weekly carloads from the Surface Transportation Board’s (STB) Rail Service Metrics. Each week, the seven Class I railroads submit originated and received carloads by 23 major commodity groups, such as grain, grain mill, primary forest products, chemicals, coal, containers, trailers, etc.

While the STB began collecting some service metrics from railroads (e.g., trains speeds, origin dwell, and terminal dwell) in October 2014, it did not start collecting carload data until March 2017 through a new rulemaking.

Bar chart showing a query from the rail carloadings dataset to show the most recent week of data by railroad. It includes average weekly carloads based on the month to provide a sense of the seasonal expected level. It also includes a calculation of one standard deviation above and below that average to provide a sense of variation around the expected level.

This data includes historical volumes of U.S. grains inspected for export from major U.S. port regions and countries of destination. Information Contained In This Data Reflects Exported Grain Inspected And Weighed Through The Authority Under The U.S. Grain Standards Act.

This dataset provides weekly information on the number, location, direction, and type of barges transiting the following three major points: (1) the last lock on the Mississippi River, Mississippi Locks 27 (called "Miss Locks 27" in the dataset); (2) the last lock on the Ohio River, Olmsted Locks and Dam ; and (3) the last lock on the Arkansas River, Arkansas River Lock and Dam 1 (called "Ark Lock 1" in the dataset). (Olmsted locks replaced Ohio Locks 52 beginning in November 2018.)

The data offers insight on barge movements over time. One variable is "direction", which consists of upbound ("Up") and downbound ("Down"). It also offers insight on the "type" of traffic (e.g., empty barges, loaded barges, grain barges, and non-grain barges). More specifically, upbound data includes the number of empty barges and the number of loaded (any commodity) barges transiting the locking system. Downbound data includes the number of empty barges, the number of grain barges (loaded), and the number of non-grain (loaded) barges. That is, grain and non-grain sum to total loaded for downbound traffic. will Due to data availability, prior to 10/15/2000, downbound data includes just empty and loaded counts.

A similar dataset, "Downbound Barge Grain Movements (Tons)," contains information on the tonnage (and commodity) of grain moving by barge down the locking system: https://agtransport.usda.gov/d/n4pw-9ygw/.

Data is collected weekly from the U.S. Army Corps of Engineers' Lock Performance Monitoring System.

Line chart showing a weekly aggregation of daily refrigerated truck volumes over time. Filterable by region and commodity.

The Surface Transportation Board's Carload Waybill Sample is perhaps the most comprehensive dataset available on railroad movements and trends. More technically, it is a stratified sample of carload waybills for all U.S. rail traffic submitted by those rail carriers terminating 4,500 or more revenue carloads annually. See 49 C.F.R. §§ 1244.1 to 1244.5.

Waybill data have broad applications and usage in national railroad policy and regulations, such as rate cases, costing systems, productivity studies, exemption decisions, and analyses supporting regulations. Waybill data are used by transportation practitioners, consultants, and law firms in preparing verified statements to be submitted in formal proceedings before the Board or other public agencies. Various federal agencies use the Waybill Sample as part of their informational and decision-making framework, and many states use it as a source of information for developing state transportation plans.

STB creates the Public Use Waybill file from the confidential Waybill Sample file. See the attached documents for more information. The "Reference Guide" document contains additional details on the variables and Standard Transportation Commodity Codes (STCC). In the "Creation of the Public Use Waybill Sample" document, STB provides more detail on the public use sample and how it is created. There is also a map of Bureau of Economic Analysis (BEA) Areas and a document describing the Waybill sampling instructions.