What Is Rainwater Harvesting?

Rainwater Harvesting Methodology:

• To design a rainwater harvesting system at first collecting the rainwater and subsurface water in a hygienic way.
• In large areas, water availability is more, increase inplantation.
• Stormwater harvesting helps both sides of structures. Stormwater hazards cities but they help to fill the groundwater level by 8 to 10 times compare to the normal process.
• Rainwater harvesting technology requires a hydrogeological study for location and design. Zones are separated by different rainfall types.

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Types of Rainwater Harvesting Method:

• Water Butt.
• Gravity Only.
• Indirect Gravity.
• Direct Pumped (Submersible).
• Direct Pumped (Suction).
• Indirect Pumped.

1. Water Butt:

2. Gravity Only:

3. Indirect Gravity:

4. Direct Pumped (Submersible):

5. Direct Pumped (Suction):

6. Indirect Pumped:

Rainwater Harvesting Project:

Aim of Rainwater Harvesting Project:

Objective of Rainwater Harvesting Project:

• For calculation of rainfall discharge.
• For determining the rainfall characteristics of the area.
• For knowing the relation between groundwater and the rainwater potential.
• Each zone and each land use has required a design prototype to placed the different types of recharging structures.
• To calculate the runoff water of differents colony that's area is used for the project.

Study Area for Rainwater Harvesting Project:

• The total area of these four places is around 10 sq km.
• There is a park in every 1-1.5 sq km.
• This area is mostly locality.
• To know the water level and soil strata we made holes and found the groundwater level up to 35 m.
• Near the park mostly done.

Soil Condition and Climate for Rainwater Harvesting Project:

• The soil conditions of those areas are silty sand and loamy soils.
• During summer and winter, the temperature is extreme and dry.
• The temperature in summer is 22 to 42° C or winter is 6 to 26° C.
• The limited during months June to September there is average rainfall is 732 mm.

Quality of Groundwater for Rainwater Harvesting Project:

• The respect of all constituents expected for total hardness and nitrate the groundwater should be suitable for drinking and domestic uses.
• In the groundwater has not been detected the arsenic content.

Ways of Harvesting Water for Rainwater Harvesting Project:

• Collecting runoff water from roads, roofs.
• Collecting the water from the local catchment.
• For domestic or agricultural purposes conserving water from the watershed management Is used.
• From the local stream capturing the seasonal floodwater.

Need of Rainwater Harvesting

• Nowadays rainwater harvesting is very essential for us.
• Because the ground level water belongs very down from the ground.
• So the requirements are not full fell of us with the groundwater.
• That happens for the domestic abuses of water and the industrial abuses of water.

Rain Water Harvesting Project

Types of Rainwater Harvesting

• Water Butt
• Direct-Pumped (Submersible)
• Direct-Pumped (Suction)
• Indirect Gravity
• Indirect Pumped
• Gravity Only

Rainwater Harvesting Methodology

Methods of Rainwater Harvesting

• Surface Runoff Harvesting. In urban areas, rainwater flows away as surface runoff.
• Rooftop Rainwater Harvesting. It is a system of catching rainwater where it falls. .
• Catchment.
• Transportation.
• First Flush.
• Filter.
• Storage of Direct Use.
• Recharging Groundwater Aquifers.

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