Spatial and Seasonal Variation of Po4, NO3 and pH of Mosul dam lake

The aim of this study is to assess the spatial and seasonal variation of Mosul dam lake by measuring phosphate (PO4), nitrate (NO3) and potential hydrogen(pH), during the period July 2018 to April 2019. Twenty two points were chosen inside the lake The obtained result were coordinates with the geological data system(GIS) by using spatial images to form maps by utilizing Arc map computer program, those maps used to illustrate the concentrationsof mentioned parameters during the study period. Results show that all parameters were within the accepted levels which demonstrate the good status of the lake, This study has found that the highest mean value of Phosphate (0.285 +/- 0.06 mu g/l) was recorded during spring while the lowest mean value (0.023 +/- 0.01 mu g/l) was measured in autumn, while Nitrate had highest mean value of 4.80 +/- 1.49 mu g/l recorded in spring season and lowest mean value of 0.73 +/- 0.202 mu g/l in at spring season and pH was recorded the highest mean value 8.48 +/- 0.11 during winter season, while the lowest mean value was 7.69 +/- 0.37 in winter season again.