Mapping the Danube River and Impacts of the Gabcikovo Water Project by Kristi Shaw

Data Sources Digital Chart of the World University of New Hampshire/GRDC Global Composite Runoff Data Set (v 1.0) –Basin Data Potential Simulated Topological Networks (STN- 30P) Global River Discharge Database (RivDis 1.1) USGS EROS Data Center Hydro1K Elevation Derivative Database Europe Atlas CD (2000)

Digital Elevation Model (taken from USGS Hydro1- Europe Dataset)

Mapping the Danube River using Arc View 3.2 Selected countries in Digital Chart of the World Ponet (polygon), Dnnet (arc), Dnpoint converted to shapefiles Category: Projections of the World Type: Geographic Map Units: Decimal Degrees

Comparison of DCW Basin with UNH/GRDC STN-30p Basin UNH/GRDC Potential Simulated Topological Networks (30 minute spatial grid system) and UNH/GRDC Composite Runoff Fields Danube river and tributaries shapefiles provided by Europe Atlas CD (special thanks to Mustafa Akcay)

Selecting for the Danube River Network Tributaries: Inn, Morava, Mura, Drava, Sava, Tisza, Mures, Olt, Siret, Prut Removed all unrelated rivers using start editing tool and Using Geoprocessing extension to merge river themes from each country into one theme

Network Connectivity using Arc Info 8.0 Created new personal geodatabase and then followed with new feature dataset (selecting Geographic Coordinates in GCS_WGS_1984 projections) Coverage to geodatabase from Merge1.shp (danube1) adding two sinks in ArcMap Geometric Network Wizard (danube1, outlet (sink)) Danubegeo_junctions created

Danube River with Tributaries (with river network)

Geographic Projection of Danube River and River Stations Projection Utility Wizard (Geographic Projection with GCS North American 1927 Datum) Selected Danube Stations (points) from UNH RivDis 1.1 –did not coincide with river (line)

Danube River Stations and Elevations

Danube River Stations with December 1984 Flow Rates (m 3 /sec)

Danube River Stations (Min Flow Rate, Station Name, Max Flow Rate)

Gabcikovo Water Project Approximately 100 miles

Original Danube River Danube River (with Gabcikovo Water Project)

Opposing Views Hungary –Gabcikovo would adversely affect water quality increasing deposits of polluted clay in reduced flow regions –Lowering of water table –Danube villages flooded –Ceased involvement 1989 –Change international boundary (trading tariffs(?)) Slovakia –Guarantee 95% minimum flow rate along original Danube –Hydroelectric-power station provided nearly 2 billion KWH electrical energy during first year –Replenish flow in river reaches near reservoir –Significant financial investment

Alternative C (I) After discussion and deliberation, Alternative C began construction in July 1991

Alternative C (II) Reservoir Connection Dike (Dam) Headrace Canal Gabcikovo River Step (hydroelectric power station and two navigation locks

Gabcikovo Water Project –Reduced to approximately 30 miles

Gabcikovo Structure

Opposing Perspectives

Limiting Factors Flow Data unavailable for post-1992 (to compare effects of the Gabcikovo project) Lack of scientific evidence available regarding effects of the Gabcikovo Language barrier Data available often did not include reference datum and/or projection

Questions