. Nazir Sabar Hamad al-Mohammadi, sufficiency of rain in Anbar Governorate, Journal of economic humanities, Anbar university, fourth issue, September, 2004, p.123.
. Hassan Mr. Abu al-ainein , the origins of climatic geography, 1984, i2, P370.
. Nazir Sabar Hamad al-Mohammadi and Mazen Abdul Rahman Juma Al-Heti, spatial analysis of recreational services in the city of hit (Field Study), Journal of Anbar University for Humanities, third issue. 2010 P. 12.
. Hussein Karim Hamad Al-Saadi and Amal Hadi Kazem al-Jabri, spatial modeling of water harvesting in the Arar Valley Basin in western Iraq using RS & GIS techniques , Journal of Wasit University, Issue 3 (B) , volume 43, year 2018, P.306.
. Hussein Azab Khalif al-Mousawi and Amal Hadi Kazim Al-Jabri, morphometric analysis of the Arar Valley Basin in western Iraq using remote sensing and geographic information systems (GIS), Journal of the Faculty of Education, Wasit University, special issue of the research of the tenth Scientific Conference , 2017, , p.442.
[1]. Omar sulaiman Abdullah, Performance of small hydroelectric water turbine at river barrages-case study in Ramadi barrage, University of anbar, college od engeneering, 2020, P11.
[1]. Zhou, D., Deng, Z.D.,Ultra-low-head hydroelectric technology: A review. Renew. Sustain. Energy Rev, 2017.P 78, 23–30.