'here are 2,523 miles of project levees, with earthwork aggreing about 1,154 million cubic yards, below Cape Girardeau, and miles, with earthwork aggregating 76 million cubic yards, ve Cape Girardeau, as listed in tables E-1 to E-4. Roads 'e been constructed on 67 miles of levees in the New Orleans trict and on 20 miles in the Vicksburg district. Revision of ees to the 1941 standard grade and section, which provides for itional crown width for roads, involves reconstruction of roads eady built on levees constructed to the 1928 standard section. the New Orleans district about 38 miles of levees on the right k and 10 miles on the left bank are protected against wavesh by timber structures.

Effective revetment for bank protection has been placed on out 126 miles of river bank including about 4 miles on the kansas and Ohio Rivers as listed in tables D-1, D-2, and D-3. Channel dimensions provided under the old project are availe practically at all times. During 5 to 8 months of the year, en high stages prevail, considerably greater dimensions obtain the channel below Cairo. Below Baton Rouge there is a least oth of 35 feet and from Baton Rouge to Cairo the project chan(9 by 300 feet) is maintained by dredging. Since 1928 erage annual maintenance and premaintenance dredging has en 27 million cubic yards. Premaintenance dredging, generally ployed in troublesome reaches, has reduced navigation diffities. Channel improvements, accomplished by improvement edging to increase the flood-carrying capacity of the river, now rm part of the main river channel. These improvements, ich include 16 completed cut-offs, have reduced the distance om Baton Rouge to Cairo to 737 miles. The effect of channel provement works on carrying capacity of the river is given page 1811, Annual Report of Chief Engineers for 1943. The condition of Atchafalaya Basin improvements, including ax Lake outlet, Morganza and West Atchafalaya floodways, is actically unchanged from that given on pages 1884 and 1885 of inual Report of Chief of Engineers for 1943. The floodways ay be used if required to pass great floods.

In the Yazoo Basin the Sardis and Arkabutla Reservoirs are mplete and available for use as required. Relocation of U. S. ighway No. 51 across Arkabutla Reservoir is under construction, e embankment being 94 percent and the bridge 99 percent mplete. Plans and specifications for Enid and Grenada Reserirs are in preparation. Work on levees, drainage structures, annel improvements, and cut-offs in the basin is in progress. The condition of St. Francis Basin improvements remains as ven on page 1884 of Annual Report of Chief of Engineers for 943, except for Cross County Ditch, excavation of which was 9.8 percent complete; construction of bridge on Arkansas State ighway No. 42, which was 65 percent complete; and acquisition Wappapello Reservoir lands, which was about 99 percent comete at the end of the fiscal year.

The waterways experiment station is very active in constructing and operating models and reporting results of experimenta tests for proposed and authorized improvements related to civi and military projects for the Department, its divisions and districts, and other agencies throughout the United States and abroad.

Surveys and reports prescribed under the existing project and as called for by congressional or departmental directives are made as required. Reports on tributary streams authorized pursuant to the act of January 21, 1927, when presented to the Mississippi River Commission in compliance with section 10 of the act of May 15, 1928, are considered and the conclusions and recommendations of the Commission thereon are submitted to the Department.

Total costs under the existing project incurred from United States and contributed funds to June 30, 1945, were $512,359,584.15 for new work and maintenance (see table G-1), and $10,681,807.87 for emergency repairs. Similarly, total costs for construction and maintenance of levees under the existing project and expenditures incurred therefor by non-Federal agencies are given in table G-2.

PROPOSED OPERATIONS

The balance unexpended on June 30, 1945, will be applied during the fiscal year 1946 in the prosecution of new work and maintenance under the project. It is estimated that there will be no available balance from prior appropriations on June 30, 1946.

Enlargement of the Mississippi River project levees above Old River in the New Orleans, Vicksburg, and Memphis districts to 1941 standard grade and cross section will be prosecuted to the extent of available funds. About 7 miles of bank revetment and 7,000 linear feet of pile and abatis dikes will be constructed. Existing flood-control structures will be maintained and operated. Improvement and maintenance dredging will be accomplished as required to maintain an efficient channel for navigation and flood control. In the New Orleans district, construction of the highlevel crossing for State Highway No. 190 across the Morganza floodway between Lottie and Krotz Springs will be continued. In the Vicksburg district, levee construction and channel improvement in connection with Yazoo Basin headwater flood control will be continued.

Preparation of reports called for by congressional or departmental directives will be continued. Surveys and observations pertinent to the existing project will be made and results published. Designs, plans, and specifications for authorized improvements will be developed. The waterways experiment station will continue to prosecute model studies and tests for proposed and authorized civil and military works for the Department and other agencies as required.

During the fiscal year 1947, $48,000,000 can be profitably expended for new work, $11,000,000 for maintenance and $1,000,000 for emergency repairs.

A=Asphalt; AC=Articulated concrete; FW= Framed willow; W-Willow mattress; CB Concrete blocks.

1 Revision.

TABLE D-2.-Vicksburg district

[Bank protection works built during fiscal year and effective protection in place June 30, 1945]