UNSTABLEUNSTABLE BEDBED ANDAND BANKSBANKS OFOF THETHE DANUBEDANUBE RIVERRIVER ATAT THETHE "APATIN"SECTOR"APATIN"SECTOR THREAT TO LOCAL COMMUNITIES, PROTECTED AREAD, AND WATER TRANSPORT ALONG THE CORRIDOR

Marina Babic Mladenovic Institute for Development of Water Resources “Jaroslav Cerni” -

Joint Statement on Inland Navigation and Environmental Sustainability in the Danube River Basin, II workshop, Bucharest, June 25-26, 2007 SECTORSECTOR APATIN

•• DanubeDanube sectionsection sharedshared byby SerbiaSerbia andand CCrroatiaoatia ((kkm1433m1433 ––km1295)km1295) •• SectionSection ofof commoncommon interestinterest withwith HungaryHungary (km1433(km1433 ––km1333)km1333)

•• DeformabDeformablele rriveriver bedbed •• UnstableUnstable riverriver banksbanks •• PoorPoor navigationnavigation conditionsconditions •• UnfavorableUnfavorableflowflow conditionsconditions andand regimeregime ofof sedimentsediment andand iceice transporttransport RIVER BED DEVELOPMENT DURING FLOOD 2002

SERBIASERBIA deependeepeninging ooff thethe rriiverver seriousserious erosionerosion ofof leftleft bankbank bedbed ––depthsdepths upup toto 13m13m

sharpsharp riverriver bendbend (possible(possible iceice jammjammining)g)

endangeredendangered rightright bankbank riverriver flowflow divideddivided inin 22 partsparts

CROATIACROATIA LOCAL BANK PROTECTION

Right bank () – protection of Kopacki rritit area of 17,700 ha (protected by the Ramsar Convention and featuring the Special Zoological Reservation)

Left bank () – protection of Apatin city,city, including international ship winter shelter, harbor, shipyard, custom center, and city beach NAVIGATIONNAVIGATION CONDITIONSCONDITIONS

20022002 ROADROAD TOTO SOLUTIONSOLUTION

STABILISATIONSTABILISATION AND AND IMPROVEMENT IMPROVEMENT OFOF THE THE DANUBE DANUBE RIVER RIVER BED BED NEAR NEAR APATIN APATIN

COORDICOORDINATIONNATION COORDICOORDINATIONNATION STUDYSTUDY AND AND DESIGN DESIGN WITWITHH C CRROATIAOATIA WITWITHH H HUUNGARYNGARY

REVIEWREVIEW OF OF POS POSSSIBLEIBLE REVIEWREVIEW OF OF POSPOSSSIBLEIBLE FEASIBILITYFEASIBILITY STUDY STUDY SOLUTIONSSOLUTIONS SOLUTIONSSOLUTIONS ((incincludingluding EIA EIA)) ANDAND EFFECTS EFFECTS ANDAND EFFECTS EFFECTS

CONCEPTUALCONCEPTUAL DESIGN DESIGN COSTCOST ESTIMATE ESTIMATE

AGREEMAGREEMENTENT ON ON FINANSING FINANSING DETAILEDDETAILED DESIGN DESIGN ANDAND WORK WORK EX EXECECUUTTIONION

NEWNEW EXISTINGEXISTING BILATERALBILATERAL COMMISSIO COMMISSIONN BILATERALBILATERAL COMMISSIO COMMISSIONN FEASIBILITYFEASIBILITY STUDY 20042004-2006-2006

Ministry for capital investments – Ministry for agriculture, forestry and IWT Department water resources management – Directorate for water Inland waterways maintenance and development agency PLOVPUT Institute Jaroslav Cerni

Civil engineering faculty - Belgrade

1. Field investigations – detailed survey of river morphology, 2 series of flow and sediment transport measurements (December 2004 and May 2005) 2. Hydraulic study - 1D (HEC-RAS) and 2D models (finite elements) 3. Preliminary design

Feasibility study Environmental impact assessment FIELDFIELD INVESTIGATIONSINVESTIGATIONS

RIVERBED SURVEY - km 1399 do km 1406 120 cross sections (km 1400 do km 1405 at 50 m distance and 100 m upstream/downstream) FIELDFIELD INVESTIGATIONSINVESTIGATIONS

PR 120 Km 1405+950

2 SERIES OF FLOW AND SEDIMENT EP 24 MEASUREMENTS AT 6 CROSS SECTIONS Km 1404+500 EP 24/1 Km 1403+500

EP 26 Km 1401+800

EP 28 Km 1400+500

KP-2 Km 1398+900 HYDRAULICHYDRAULIC MODELINGMODELING

1D1DHEC-RAS HEC-RAS modelmodel 2D2D modelmodel RMA2RMA2 (final(final elelements)ements)

3 3 Q =1700 m3/s Qfb=3760 m /s Qen=840 m /s Qav=1700 m /s

waterwater depthdepth

•• model calibration (data from the 1st field campaign) •• model verification (data from the 2nd field campaign) •• simulation – presentpresent state + riverbed withwith dedesignedsigned river engineering structuresstructures HYDRAULICHYDRAULIC MODELINGMODELING

3 Qfb=3760 m /s

flowflow fieldfield

3 Qav=1700 m /s

3 Qen=840 m /s PRELIMINARYPRELIMINARY DESIGNDESIGN

Fairway dimensions according to recommendations of the Danube commission:

• Rmin=1000 m • b = 180 m

Alternative 1: B=400m

Alternative 2: B =400-500m PRELIMINARYPRELIMINARY DESIGNDESIGN

DREDGING - km1406.0 to km1402.4 • b=200m, b=300m, b= 400m

GROUPGROUP OFOF GROINSGROINS BOTTOMBOTTOM SILLSSILLS

LONGITUDINALLONGITUDINAL DIKESDIKES OROR SHORTSHORT GROINSGROINS

REVETMENREVETMENTT INNERINNER BBANKANK ADJUSTMENTADJUSTMENT ROADROAD TOTO SOLUTIONSOLUTION

STABILISATIONSTABILISATION AND AND IMPROVEMENT IMPROVEMENT OFOF THE THE DANUBE DANUBE RIVER RIVER BED BED NEAR NEAR APATIN APATIN

COORDICOORDINATIONNATION COORDICOORDINATIONNATION STUDYSTUDY AND AND DESIGN DESIGN WITWITHH C CRROATIAOATIA WITWITHH H HUUNGARYNGARY

REVIEWREVIEW OF OF POS POSSSIBLEIBLE REVIREVIEWEW OF OF POPOSSISSIBBLELE FEASIBILITYFEASIBILITY STUDY STUDY SOLUTIONSSOLUTIONS SOLUTIONSSOLUTIONS ((incincludingluding EIA EIA)) ANDAND EFFECTS EFFECTS ANDAND EFFECTS EFFECTS

CONCEPTUALCONCEPTUAL DESIGN DESIGN COSTCOST ESTIMATE ESTIMATE

AGREEMAGREEMENTENT ON ON FINANSING FINANSING DETAILEDDETAILED DESIGN DESIGN ANDAND WORK WORK EX EXECECUUTTIONION

NEWNEW EXISTINGEXISTING BILATERALBILATERAL COMMISSIO COMMISSIONN BILATERALBILATERAL COMMISSIO COMMISSIONN