{"product_id":"black-warrior-tombigbee-river-navigation-chart-40-mile-3158-3228-us-army-corps-of-engineers-map","title":"Black Warrior-Tombigbee River Navigation Chart 40 (Mile 315.8 - 322.8)","description":"Download for FREE georeferenced PDF files of current river charts beginning in Mobile, Alabama, continuing through Jackson, Demopolis, Tuscaloosa, and to the heads of navigation on the Locust and Mulberry Forks. The charts were prepared from Inland Electronic Navigation Chart (IENC) data, supplemented by information surveys by the U.S. Army Corps of Engineers offices, bridge clearance tables, elevated and submerged crossings, and over 2000 feature names and locations, and from aerial photography taken in 2017 or better imagery.\n\nInformation denoted on these charts is a general depiction of the waterway and adjacent areas, only; and is not in anywise to be construed as representing precise or accurate dimensions, portrayals, features, or other data. Therefore, anyone utilizing the Tennessee-Tombigbee Waterway must exercise caution and acknowledge the ever-present hazards of this natural resource.\n\nMariners are urged to report any conditions found to differ from those on the charts to the U.S. Army Engineer District, Mobile.\n\nMileage as shown along the channel thalweg is measured from Bankhead Tunnel (U.S. Highway 90), Mobile, Alabama. This mileage is historical in nature and does not represent actual distances along the channel centerline.\n\nElevations shown refer to the National Geodetic Vertical Datum.\n\nRemember it is not lawful to throw, discharge, or deposit from any barge or other floating craft of any kind, any refuse matter of any kind including oil, into any navigable stream of the United States.\n\nVertical clearances under bridges are shown on bridge profiles, which can be found on supplemental chart pages (\u003ca href=\"https:\/\/www.sam.usace.army.mil\/Missions\/Civil-Works\/Navigation\/Black-Warrior-and-Tombigbee-River\/BWT-Alabama-Rivers-Navigation\/River-Charts\/\" target=\"_blank\"\u003ehttps:\/\/www.sam.usace.army.mil\/Missions\/Civil-Works\/Navigation\/Black-Warrior-and-Tombigbee-River\/BWT-Alabama-Rivers-Navigation\/River-Charts\/\u003c\/a\u003e) on which the bridge appears, and on the Vertical Clearance Table in the appendices. Vertical clearances of aerial utility crossings, if available, are shown by denoting elevation of low wire in the Vertical Clearance Table in the appendices as well.","brand":"US Army Corps of Engineers","offers":[{"title":"Default Title","offer_id":36441243582620,"sku":"1114849","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0441\/7850\/5884\/files\/us-army-corps-of-engineers-black-warrior-tombigbee-river-navigation-chart-40-mile-315-8-322-8-digital-map-35928435687580.jpg?v=1702414017","url":"https:\/\/store.avenza.com\/products\/black-warrior-tombigbee-river-navigation-chart-40-mile-3158-3228-us-army-corps-of-engineers-map","provider":"Avenza Maps","version":"1.0","type":"link"}