Hydrological Evaluation in Dohuk-semel Area

The study area located on the east of Duhok city, it is divided into three sub-basins: Hishkero in east, Semel middle, and Gregewr west, covers about 487 km2. historical record rainfall data Duhok-Semel from Seismology Directorate Meteorological Stations were used to calculate water balance parameters for period 2005-2006 2020-2021. It receives 559.6 mm rain during rainy months. This occurs across 58 days eight wet months year. amount January, which averages 124.8 mm, most. runoff calculated using curve number approach Soil Conservation Service method (SCS), where soil type most important variable. Since all belongs D group, that value (259mm/Year) or (45.9%) annual average (563.6mm/year). From total rainfall, there a surplus 31.2% deficit 68.8%. According overall calculations components, groundwater recharge (-175.5 mm/year) (0.1%) water. prediction according Log person III return (95.2%) as probability first two years appear will be little, but inversely falling start with (80%)