الفهرس 
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Abstract
This study aims to produce local wastewater flow factors (peaking and minimum) for sewerage systems of Egyptian rural areas according to the population & average wastewater flow rate. In order to produce local factors; data of wastewater flow rate through one year for 12 villages in 3 governorates (Kfr El Sheikh, El Menia, and Qena) were measured and recorded. Then two groups of models were produced as follow:
Group (A) consists of four flow factors models according to population.
Group (B) consists of four flow factors models according to average wastewater flow rates. Four models for each group are: Hourly Peaking Flow Factor (HPF), Hourly Minimum Flow Factors (HMF), Daily Peaking Flow Factors (DPF), and Daily Minimum Flow Factor (DMF).
The produced wastewater flow factors were evaluated and compared with Egyptian code models and widely used wastewater flow factors models.
Wastewater flow factors obtained from study produced models give nearest values to the field results with percentages of errors between ± 1 to 20 %, and ± 1 to 25% for groups (A) and (B) respectively, in the other hand, the wastewater flow factors obtained from Egyptian code models and widely used wastewater flow factors models give percentages of errors more than 101%, and 150% for groups (A) and (B) respectively. Also, the comparison between HPF obtained from Egyptian Code models, and HPF obtained from study produced model indicates that the produced HPF can be obtained by multiplying E.C HPF models in a reduction factor of 0.76.
So, this study recommends using the produced wastewater flow factors models in the design of sewerage systems in Egyptian rural areas which will reduce size of sewerage system elements such as pipes and pumps and achieve bigger operation and maintenance efficiency and saving costs, especially with the lacking of wastewater facilities and investments in these areas.