Web based catchment characteristics (info tool) – Digital Waterbook (DWB)

1. Exchanged Experiences PP 8: Saxon State Office for Environment, Agriculture and Geology LfULG - Key Competencies Under One Roof Department 4 Dresden-Klotzsche Water, Soil, Recyclables “Network to shape the future – this is the motto of the Saxon State Office for Environment, Agriculture and Geology (LfULG) in tackling the increasingly complex issues of agricultural and environmental policies for both businesses and citizens.” Norbert Eichkorn, President of the LfULG Recycling Soil, contaminated lands Residential water management Surface and groundwater Flood control centre, hydrology Mining impacts www.smul.sachsen.de/lfulg Fig. 1: Activities of the Department 4 in the LfULG www. smul.sachsen.de/lfulg Good Practice Sustainable precipitation management concepts to save water quality/quantity In urbanised areas, the natural water balance is disturbed by a high percentage of impervious surfaces. Appropriate measures (green roof, storm water infiltration and rainwater harvesting) and their combination can help restore the natural water balance quite closely. So it is possible to properly use the retention and cleaning capacities of the soil and to reduce runoff peaks. Assessment of water balance models – Project KliWES www.umwelt.sachsen.de/kliwes The project assess the impact of the climate changes on the water balances in Saxony. To calculate scientifically founded and reliable water balance data KliWES uses combined and complex methods. A risk map e.g. will identify areas in greatest need of adjustment strategies for water management, agriculture and forestry. Web based catchment characteristics (info tool) – Digital Waterbook (DWB) Since the free web tool of the DWB, qualified water management information is generally accessible. Therefore, information such as water rights, surface waters, groundwater, drinking water protection areas and flood zones are online available. This transparency in water management is the basis for the sustainable water resources management. Urban Water Balance Natural Water Balance 5 % 17 % 20 % Evaporation and Retention Runoff Percolation 50 % <=100 >100 – 175 >175 – 250 >250 – 325 >325 – 400 >400 33 % Fig. 3: Urban/Natural Water Balance (Germany), after Mönninghoff 1993, modified Fig. 2 Groundwater Recharge calculated by KliWES + Groundwater Recharge mm/a § + www.wasserbuch.sachsen.de Adaptation Effects on Groundwater by Mining The Scottish, Polish and Greek partners have also a mining industry. They are interested on methods for rehabilitation of mining areas and to clean the contaminated mining water. Therefore, at study visits mine water treatment plants, active mining and lakes after rehabilitation of mining area were visited. In addition the results of the project VODAMIN, which was initiated by the LfULG, are also included in SHARP. So there is possibility to exchange experiences of current methods to clean mining waters. • other Adaptation Topics bythe LfULG • Geothermal UseofGroundwater • Application of Water Balance Models with Respect to Climate Change • Exchange ofExperiencestofurther Adaptation Topics • TransboundaryIssues, Groundwater models development and verification, Sustainable Drainage Systems (SuDS),… Fig. 4: Scheme of operating in a mine water treatment plant/ Pict. Mining area Schleenhain (Germany) Inflow of mine water Contaminated mining water The end of the project SHARP is not the end of cooperation Adding of lime milk Contact and aeration tank Based on the joint collaboration in SHARP especially on the topics of transboundary issues, water balance and ground- water modeling a new project idea was developed. Together with the Polish partners the water balance of the catchment area of the Lusatian Neisse will be calculated in the project NEYMO (www.umwelt.sachsen.de/neymo). The project results will help to ensure a coordinated and sustainable water management in the transboundary catchment area.