I am having trouble figuring out this area of mixed-use land area that is proposed for construction. The region is known to be soil type C. This mixed land use has a drainage outlet into a 600m^2 reservoir. The nearby commercial areas want to withdraw some water from the reservoir for their manufacturing needs, but they’re unsure how much they can take. The city has instructed the business owners that regulations indicate the water level must not drop more than 15.00 cm. Help me analyze this problem to inform the business owners how much water they can withdraw for the months of May and June. Relevant information is below: Open Water | Area = 5000 m^2 |CN = 0 Contoured and Terraced Small Grain | Area = 15380 m^2 | Contoured & terraced (C&T), good, CN = 78 Commercial and Business | Area = 12450 m^2| commercial and business, CN = 94 Town Houses | Area = 4160 m^2 | 1/8 acre or less (town houses), CN = 90 Open Space | Area = 5290 m^2| open spaces, fair, CN = 79 Streets | Area = 8230 m^2 | Paved; curbs and storm sewers (excluding right-of-way), CN= 98 Precipitation intensity over construction zone (new landuse) – I have a hyetograph for the area over which the new landuse area is proposed, the points are as follows (Week 1, Intensity = 0.047 cm/h) (Week 2, Intensity = 0 cm/h) (Week 3, Intensity = 0.022 cm/h) (Week 4, Intensity = 0.018 cm/h)   The idf curves for specifically the region of the reservoir only show that The 2-year line has points at (0.083 h, 125.5 mm/h), (0.167 h, 77.3 mm/h), (1.0 h, 22.1mm/h), (6.0 h, 6.3 mm/h), (12.0 h, 3.9 mm/h) The 5-year line has points at (0.083 h, 165.9 mm/h), (0.167 h, 102.2 mm/h), (1.0 h, 29.2mm/h), (6.0 h, 8.3 mm/h), (12.0 h, 5.1 mm/h) The 25-year line has points at (0.083 h, 224.9 mm/h), (0.167 h, 138.6 mm/h), (1.0 h, 39.6 mm/h), (6.0 h, 11.3 mm/h), (12.0 h, 7.0 mm/h) The 50-year line has points at (0.083 h, 249.9 mm/h), (0.167 h, 154 mm/h), (1.0 h, 44.0 mm/h), (6.0 h, 12.6 mm/h), (12.0 h, 7.7 mm/h)   The return periods and durations of precipitation events over this reservoir for the months of May and June are below and these precipitation events occurred only once throughout each month. Return Period in May = 5 Return Period in June = 2 Duration in May (h) = 6 h Duration in June (h) = 6 h   Evaporation from reservoir is below, contains the evaporation rates from this reservoir: Pan evaporation rate in May (cm/d) = 0.16 cm/d Pan evaporation rate in June (cm/d) = 0.24 cm/d Any help is greatly appreciated :) This is not a graded assignment, it is a practice problem and I am struggling with it

I am having trouble figuring out this area of mixed-use land area that is proposed for construction. The region is known to be soil type C. This mixed land use has a drainage outlet into a 600m^2 reservoir. The nearby commercial areas want to withdraw some water from the reservoir for their manufacturing needs, but they’re unsure how much they can take. The city has instructed the business owners that regulations indicate the water level must not drop more than 15.00 cm. Help me analyze this problem to inform the business owners how much water they can withdraw for the months of May and June.

Relevant information is below:

• Open Water | Area = 5000 m^2 |CN = 0
• Contoured and Terraced Small Grain | Area = 15380 m^2 | Contoured & terraced (C&T), good, CN = 78
• Commercial and Business | Area = 12450 m^2| commercial and business, CN = 94
• Town Houses | Area = 4160 m^2 | 1/8 acre or less (town houses), CN = 90
• Open Space | Area = 5290 m^2| open spaces, fair, CN = 79
• Streets | Area = 8230 m^2 | Paved; curbs and storm sewers (excluding right-of-way), CN= 98
  
  
• Precipitation intensity over construction zone (new landuse) – I have a hyetograph for the area over which the new landuse area is proposed, the points are as follows
  • (Week 1, Intensity = 0.047 cm/h)
  • (Week 2, Intensity = 0 cm/h)
  • (Week 3, Intensity = 0.022 cm/h)
  • (Week 4, Intensity = 0.018 cm/h)

• The idf curves for specifically the region of the reservoir only show that
  • The 2-year line has points at (0.083 h, 125.5 mm/h), (0.167 h, 77.3 mm/h), (1.0 h, 22.1mm/h), (6.0 h, 6.3 mm/h), (12.0 h, 3.9 mm/h)
  • The 5-year line has points at (0.083 h, 165.9 mm/h), (0.167 h, 102.2 mm/h), (1.0 h, 29.2mm/h), (6.0 h, 8.3 mm/h), (12.0 h, 5.1 mm/h)
  • The 25-year line has points at (0.083 h, 224.9 mm/h), (0.167 h, 138.6 mm/h), (1.0 h, 39.6 mm/h), (6.0 h, 11.3 mm/h), (12.0 h, 7.0 mm/h)
  • The 50-year line has points at (0.083 h, 249.9 mm/h), (0.167 h, 154 mm/h), (1.0 h, 44.0 mm/h), (6.0 h, 12.6 mm/h), (12.0 h, 7.7 mm/h)

• The return periods and durations of precipitation events over this reservoir for the months of May and June are below and these precipitation events occurred only once throughout each month.
  • Return Period in May = 5
  • Return Period in June = 2
  • Duration in May (h) = 6 h
  • Duration in June (h) = 6 h

• Evaporation from reservoir is below, contains the evaporation rates from this reservoir:
  • Pan evaporation rate in May (cm/d) = 0.16 cm/d
  • Pan evaporation rate in June (cm/d) = 0.24 cm/d

Any help is greatly appreciated :) This is not a graded assignment, it is a practice problem and I am struggling with it