ArkNavReport_TOC_Acronyms_ExecSummary.doc

Kaw lake hulah lake copan lake wister lake project

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Kaw Lake Hulah Lake Copan Lake Wister Lake Project purposes of these reservoirs include navigation, flood control, water supply, hydropower, water quality, recreation, and fish and wildlife habitat. There are 5 major public port facilities on the MKARNS, along with 62 private ports and terminals. In 2004, the 12.9 million tons transported on the system included coal, petroleum products, fertilizers, grain, sand and gravel, and iron and steel products. Inbound and outbound traffic that travels onto or off the MKARNS combine to account for 75 percent of total traffic. The regional flow of traffic between the MKARNS and Lower Mississippi amounts to 6.3 million tons which is 56 percent of the total tonnage. Approximately 90 percent of the MKARNS is already 12-feet deep over a portion of the channel width. Traffic on the Arkansas River in the twenty years before the construction of MKARNS generally ranged from 500,000 tons to 1 million tons a year. After construction of the MKARNS was completed in 1970, traffic increased rapidly through 1978 up to nearly 10 million tons a year. Traffic declined and then stabilized during the 1980s at a level of about 8 million tons. Traffic again increased in the 1990s to its current estimated level of 12.9 million tons in 2004. Current traffic on the MKARNS exceeds what was predicted in 1990 by the Corps of Engineers. x
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Figure E-1 The overall rates in traffic growth used in this study are listed in the E-1 below. The growth rates are highest for coal and industrial chemicals at annual rates of 1.5% or higher and lowest for forest products, petroleum products and “others” at 0.6% to 0.7%. The growth rate for the remainder of the commodity groups is between 0.9% and 1.2% with the overall growth rate at 1.1% a year. Table E-1. Projected Growth Rates for Middle Set of Forecasts Annual Growth Rate 2003-2010 2003-2030 2003-2060 Farm Products 2.0% 0.9% 0.9% Metals 2.0% 0.9% 0.9% Coal 3.1% 1.4% 1.9% Crude Petroleum - - - Non-Metallic Minerals 3.6% 1.4% 1.2% Forest Products 0.9% 0.5% 0.6% Industrial Chemicals 2.9% 1.3% 1.8% Agricultural Chemicals 2.5% 0.9% 0.9% Petroleum Products 1.3% 0.6% 0.7% Others 2.6% 0.9% 0.6% All Commodities 2.8% 1.1% 1.1% Study Purpose: xi
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The purpose of this study is to identify alternatives to maintain and improve the navigation system in order to enhance commercial navigation on the MKARNS, while maintaining the other project purposes of flood control, recreation, hydropower, water supply, and fish and wildlife. The proposed action for achieving the study objectives consists of three features that influence navigation on the system. As stated above, these three features are: Navigation Channel Depth Maintenance, Flow Management (Sustained High Flows), and Navigation Channel Deepening. By making changes to the MKARNS, the system would become more reliable for navigation by modifying the flow management plan to reduce the number of high flow days. Changing the flow management plan is expected to significantly increase the average number of barges per tow and the efficiency of moving cargo by reducing a constraint that inhabits efficient tows: the possibility of flows over 60,000cf.
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