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é MARINE REVIEW January, 1925 | Erie Canal - FREIGHT TONNAGE -/922 ee 37US.CANALS, RIVERS AND CHANNELS, EXCLUSIVE OF GREAT LAKES-FREIGHT TONNAGE - 1922 FREIGHT TRAFFIC GREAT LAKES SYSTEM COMPARED WITH VARIOUS FOREIG AND DOMESTIC WATERWAYS ANDO PORTS Mancuester Canat, EncLano-FREIGHT TONNAGE -1923 Kiet CANAL, GERMANY - FREIGHT TONNAGE - 1922 4. PRINCIPAL PoRTS OF CANADA- ATLANTIC AND FaciFiC ~VeEsse. TONNAGE MovEmMENT -/92/ Suez CANAL-FREIGHT TONNAGE-/923 eee eee ae Panama CANAL- FREIGHT TONNAGE -/923 | 7 PRINCIPAL PORTS OF FRANCE - VESSEL TONNAGE MOVEMENT -192/ EONS OPS et CAG is Re 5 Principal PoRTS oF JAPAN - VESSEL TONNAGE MovEMENT- 1920 7 PRINCIPAL PORTS OF GREAT BRITAIN he ee ee ee a eee VESSEL TONNAGE. MOVEMENT —/920 OE EE A RS RE RN 260 RIVERS OF UNITED STATES -EXCLUSIVE OF GREAT LAKES - FREIGHT TONNAGE -/922 DANSE ES Ee Se ee a Re a a a Guise ano Pacific PorTS-US:. FOREIGN ANG DOMESTIC a COMMERCE - FREIGHT TONNAGE -/922 297 US. es er AND py ota Wa CHANNELS, RAG EXCLUSIVE OF GREAT LAKES -FREIGHT TONNAGE -/922 ae ALL US. rae PORTS - FOREIGN COMMERCE - oe ee eee FREIGHT [TONNAGE -1922 PES A TS RE He ST Marys FALLS.C4NAL - FREIGHT TONNAGE -/923 [See eS Rh a ee ee a a ee At US.SE 4 Porrs -Fonei6 is COMMERCE ~ FREIGHT IONNAGE-/S20 [SSPE SEES eR SGA aa ASR RIE: CLR ES Se ee | GREAT LAKES ABOVE THE me GARA RIVER - FREIGHT 20 30 40 50 60 70 80 90 ee MILLIONS oF TONS FIG. 2—HOW FREIGHT TRAFFIC ON THE GREAT LAKES COMPARES WITH IMPORTANT WATERWAYS, GROUPS OF PORTS, LEADING CANALS AND WITH THE ENTIRE FOREIGN COMMERCE OF THE UNITED STATES in loading grain from an elevator. For hour or two under favorable conditions from and to Lake Superior has increased unloading, huge buckets pick up ten tons to load 14,000 tons of ore, and but four nearly threefold in 20 years. The ton- at a bite, and deposit the material in or five hours to unload the same cargo nage of iron ore has increased from twen- cars on the dock. After the vessel is at the receiving port. ty million to sixty million tons, coal moored at the wharf, it requires but an That portion. of this traffic passing from seven million to eighteen million, cl Rev, Ouacnuita AND BLACK RIVERS US WATERWAYS gee | Missouri RIVER FREIGHT IN TONS AND ANNUAL COSTS ON INDIVIDUAL RIVERS AND GROUPS | i 4. TRIBUTARIES OF MississiPPi AND Missouri RIVERS eae FS 5 TRIBUTARIES OF OHI0 RIVER Aree of 6 WATERWAYS ON GULF COAST ee 4 WaTeRways On FaciFic COAST ek ALLEGHENY RIVER We ee 5 RIVERS ON ATLANTIC Coast ee Mississippi RivER ee 6 WATERWAYS ONATLANTIC COAST eee Sees Gaeeey MONONGAHELA RIVER GREAT LAKES SYSTEM ABOVE NIAGARA FALLS 8 7 | | 6 5 4 3 2 } 00 lo 20 330 40 50 60 70 8 pt ‘ 0 90. OHO UAL Cost - MILLIONS OF DOLLARS ANNUAL FREIGHT TRAFFIC -MILLIONS OF TONS FIG. 3-HOW FREIGHT CARRIED COMPARES WITH CO STS ON LEADING WATERWAYS OF THIS COUNTRY