- PREFACE
- A. Sienko, W. Mioduszewski, E.P. Querner
- INTRODUCTION -
W. Mioduszewski, E.P. Querner
- CHARACTERISTICS OF THE LOWER BIEBRZA BASIN
- General characteristics and natural values -
A. Zdanowicz, M. Wassen
- Introduction
- General characteristics of natural values of the Biebrza National Park
- Flora of the Lower Biebrza Basin
- Soils and hydro-geological conditions -
W. Mioduszewski, Z. Kowalewski
- Geologic structure
- Hydrogeological conditions
- Analysis of the groundwater table
- Soils
- Hydrographic system of the Lower Biebrza Basin -
Z. Kowalewski, W. Mioduszewski, W.Bleuten
- Hydrographic network
- Characteristic flows and water stages
- Trends in water level changes in the Biebrza
- Quality of groundwater and surface water -
G. Gajewski, A. Wielechowska, M. Siłakowski
- The aim and extent of the study
- Water sampling
- Results and discussion
- The fluctuation of surface water quality -
I. Kardel
- SURFACE WATER SYSTEM ANALYSIS
- Introduction -
T. Okruszko
- Flood extend measurements and topography of the valley (DTM) - J. Chormański, T. Okruszko, M. Wassen, J. Skąpski
- DTM generation
- Field measurements of the flood extend
- Flood extend by remote sensing
- Results of flood extend
analysis
- Description of the surface water model -
D. Mirosław-Świątek, T. Okruszko
- Nnumerical model of unsteady river flow
- Application of unet to the lower Biebrza River
- Calibration and verification of the model
- Scenarios calculations -
T. Okruszko, D. Mirosław-Świątek
- Flood extend changes for the historical flows
- Scenario I - bottom erosion simulation
- Scenario II - river bar (weir overflow) simulation
- Scenario III - diminishing the outflow from the floodplain
- Conclusions - T. Okruszko
- GROUNDWATER SYSTEM ANALYSIS
- Introduction -
E. P. Querner, W. Mioduszewski
- The assessment of regional groundwater modelling -
A. Ślesicka, E. P. Querner, W. Mioduszewski
- Modelling area
- Input data
- Model verification
- Description of scenarios
- Results of scenarios
- The balance of surface waters
- The effect of restoration measures in the central basin on water inflow to the Lower Biebrza Basin - A. Ślesicka, W. Mioduszewski, E. P. Querner
- Groundwater flow and transport of substances in chosen cross-sections -
G.Gajewski, A. Zdanowicz, A Wielechowska
- Introduction
- Adopted assumptions and verification of the flotrans model
- Calculating the effect of changes in land use on the groundwater table
- Calculating nitrogen transport by groundwater
- ANALYSIS OF THE STUDY RESULTS -
W. Mioduszewski, E. P. Querner, T. Okruszko, M. Wassen
- The present state of the hydrological system
- Assessment of water sources in the Biebrza Lower Basin
- Recommendations for water management in the Biebrza Lower Basin
- CONCLUSIONS -
E. P. Querner, W. Mioduszewski
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