The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Scale 1:2,000,000 2.5 Figure 2.5.1 Hydrogeological Regions in Bulgaria by MOEW Within the Dolnodunavska artezianska oblast (Low-Danube artesian region): SEVERO-BALGARSKI ARTEZIANSKI BASEJN (Northern Bulgarian artesian basin) Lomski podrajon (Lom sub-region) Svishtovski podrajon (Svishtov sub-region) Silistrenski podrajon (Silistra sub-region) Dobrichki podrajon (Dobrich sub-region) Provadijski podrajon (Provadia sub-region) Kamchijski podrajon (Kamchia sub-region) JICA CTI Engineering International Co., Ltd. 2-143 The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Figure 2.5.2 Distribution of Transmissivity JICA CTI Engineering International Co., Ltd. 2-144 The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Figure 2.5.3 NIMH Monitoring Wells JICA CTI Engineering International Co., Ltd. 2-145 The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Figure 2.5.4 NIMH Wellls with Pumping Station JICA CTI Engineering International Co., Ltd. 2-146 The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Figure 2.5.5 NIMH Monitored Springs JICA CTI Engineering International Co., Ltd. 2-147 The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Figure 2.5.6 Ground water Monitoring Station (ExEA) JICA CTI Engineering International Co., Ltd. 2-148 The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Figure 2.5.7 Areas with Extremely Shallow Ground water Level (GWL) JICA CTI Engineering International Co., Ltd. 2-149 Final Report - Main Report The Study on Integrated Water Management Chapter 2 in the Republic of Bulgaria DUMMY 2-150 JICA CTI Engineering International Co., Ltd. The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 1-Jan-2000 1-Jan-2001 1-Jan-2002 1-Jan-2003 1-Jan-2004 1-Jan-2005 1-Jan-2006 50 100 150 200 depth to GWL, cm 250 300 350 Figure 2.5.8 Hydrograph of the GWL for the Station N 585 in the Low Reach of the Ogosta River Figure 2.5.9 Hydrographs of GWL for Observational Wells: Natural and Under Irrigation JICA CTI Engineering International Co., Ltd. 2-151 Final Report - Main Report The Study on Integrated Water Management Chapter 2 in the Republic of Bulgaria 1960 1966 1972 1978 1984 1990 1996 2002 15 20 high m average 25 low depth to GWL, GWL, to depth 30 35 Figure 2.5.10 Groundwater Level Fluctuations for Observational Well 310 (Sliven) 12 8 4 amplitude of GWL, m 0 1960 1966 1972 1978 1984 1990 1996 2002 Figure 2.5.11 Amplitude of Groundwater Level Fluctuations for Observational Well 310 (Sliven) 2-152 JICA CTI Engineering International Co., Ltd. The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 1800 1600 1400 1200 1000 800 600 400 *59 521226 Д1 200 1-Jan-2000 1-Jan-2001 1-Jan-2002 1-Jan-2003 1-Jan-2004 1-Jan-2005 1-Jan-2006 Figure 2.5.12 Discharge (in l/s) for Spring Jazo – Station N 59, Razlog (WABD) 250 200 150 100 50 *19 131402 Д1 *19P 131402 Д1 *600 161114 Д1 0 1-Jan-2000 1-Jan-2001 1-Jan-2002 1-Jan-2003 1-Jan-2004 1-Jan-2005 1-Jan-2006 Figure 2.5.13 Discharge (in l/s) for Spring Bela and Stojanovo (N 19 and 600), NW Bulgaria JICA CTI Engineering International Co., Ltd. 2-153 Final Report - Main Report The Study on Integrated Water Management Chapter 2 in the Republic of Bulgaria 160 8000 140 7000 120 6000 on sums, ti a 100 5000 it p i mm 80 4000 60 3000 ay prec Discharge, l/s d - 40 2000 10 20 1000 0 0 1.1 3.2 4.1 5.1 1.16 1.31 2.15 3.17 4.16 5.16 5.31 6.15 6.30 7.15 7.30 8.14 8.29 9.13 9.28 10.13 10.28 11.12 11.27 12.12 12.27 Month and date Figure 2.5.14 Daily Discharge of Kotlenski Springs during the Wettest Year (1966) and 10-day Precipitation Sums for Meteorological Station Kotel (Orehova & Benderev, 2004) 1000 Qav 1994 800 2001 600 400 Discharge, l/s 200 0 123456789101112 Figure 2.5.15 Monthly Distribution of Spring Flow for Dry Years (1994, 2001) compared with Long-term Characteristics 2-154 JICA CTI Engineering International Co., Ltd. The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 GWL for well 1432 1980 1985 1990 1995 2000 2005 1600 mean 1800 min max 2000 GWL, cm 2200 2400 2600 Figure 2.5.16 Depth to the Groundwater Level of the Upper Jurassic – Lower Cretaceous Aquifer for NIMH Station N 1432 – Nevsha. Yearly amplitude for well 1432 120 80 40 amplitude, cm 0 1980 1985 1990 1995 2000 2005 Figure 2.5.17 Yearly Amplitude of the Groundwater Level for NIMH Station N 1432 – Nevsha JICA CTI Engineering International Co., Ltd. 2-155 Final Report - Main Report The Study on Integrated Water Management Chapter 2 in the Republic of Bulgaria Figure 2.5.18 Groundwater Bodies at Risk by River Basin Directorates (Quantity Aspect) Figure 2.5.19 Map of TDS Content in Groundwater in Bulgaria (T. Kehajov, 1972) Regions with TDS content: 1 – < 200 mg/l; 2 – from 200 to 400 mg/l; 3 – from 400 to 600 mg/l; 4 – from 600 to 800 mg/l; 5 – from 800 to 1000 mg/l; 6 – >1000 mg/l 2-156 JICA CTI Engineering International Co., Ltd. The Study on Integrated Water Management Final Report - Main Report in the Republic of Bulgaria Chapter 2 Figure 2.5.20 Zones with Prevailing Concentrations of Nitrate over 50 mg/l in Groundwater (Kehajov et al., 2002) JICA CTI Engineering International Co., Ltd. 2-157 .