Vulnerable zones to nitrate pollution
•   (A) Vulnerable zones by runoff (surface water bodies)  : 474.685 Km2 (potential : 5650 km2)
•   (B) Potential vulnerable zones by leaching (groundwater / aquifers) – moderate risk: 2511.115 Km2 (Potential :13759 km2)
•   (C) Vulnerable zones by leaching (groundwater / aquifers) high risk: 158.94 km2 (Potential : 1200 km2)