Based on the lithology of the area well assembly is designed with slotted pipe against the shallow and deeper aquifer. Rain water is not pure and therefore, it needs to be filtered before storage and use. If the roof area is more, a filter pit may be provided. In areas where the shallow aquifers have dried up and existing tubewells are tapping deeper aquifer, roof top rain water harvesting through existing tubewell can be adopted to recharge the deeper aquifers. Since this easy-to-deploy system catches rain straight from the sky, it also decreases the chances of contamination.
It is a quick and cheap method to implement but has significant rewards. It involves collection and storage of rain water at surface or in sub-surface aquifer, before it is lost as surface run off. If you have already set up bore wells, you could develop pits around it to allow the rainwater to seep in effectively and thus replenish this source. Recharge well of 100-300 diameter is constructed to a depth of at least 3 to 5 m below the water level. This is a job to hire out, as putting up a gutter can be challenging, especially when your roof is high up and professionals can fabricate seamless gutters, which are less prone to leaking. Drip irrigation and sprinkles can save anywhere between 30 to 60 per cent of water.
To execute this technique, develop a pit in the ground such that it suits the size of the slab. The cost of recharge to sub-surface reservoir is lower than surface reservoirs. Subhash Chandrabose Mob: 9847547881 Email: subhashchandraboss yahoo. Write to us: contact thebetterindia. Surface spreading techniques are common since space for such systems is available in plenty and quantity of recharged water is also large.
Melt water diverted from them needs to go somewhere, an issue if the ground is frozen. In case of lined shaft the recharge water may be fed through a smaller conductor pipe reaching up to the filter pack. Hence, rainwater harvesting will play a huge role in providing additional sources of water. Recharge Pits may be of any shape and size and are generally constructed 1 to 2 m wide and 2 to 3 m deep which are back filled with boulders 5-20 cm , gravels 5-10 mm and coarse sand 1. Storing water under ground is environment friendly. The separators do not allow the first rain to pass through the filter. The tank can be connected to provide backup water to your current plumbing system, or it can be attached to a pipe for drip irrigation.
Gully plugs help in conservation of soil and moisture. During the dry season, people will be able to have water sources if they have implemented the necessary kind of harvesting techniques. There are a variety of fitting options for connecting them to your downspouts. Spacing between two contour bunds depends on the slope of the area and the permeability of the soil. Rainwater harvesting expert Brad Lancaster suggests working from the highest point in your yard to the lowest point. Percolation tank should be constructed preferably on second to third order streams, located on highly fractured and weathered rocks which have lateral continuity downstream.
This is the most efficient and cost effective technique to recharge unconfined aquifer overlain by poorly permeable strata. Some materials, such as the asbestos roof materials, should not be part of any system used to provide drinking water. In spite of the lack of space, it is still possible to maximize the absorption of rainwater. A few techniques of roof top rain water harvesting in urban areas are described as under: i Roof Top Rainwater Harvesting through Recharge Pit: a. By constructing recharge shaft in tanks, surplus water can be recharged to ground water. These perforations let filtered and de-silted water seep from the sides increasing the groundwater table. These fun, fashionable and environment-friendly accessories help avoid the runoff by transporting rainwater from the collecting pipe downwards to a drain or to a storage container.
You may seal the sides and edges of this pit using bricks and cement to avoid the soil from running off. Madakas continue to be abandoned and replaced by borewells, a temperory, highly exploitative and unsustainable means of procuring water. The number of ways you can go about this might surprise you. Several hotels in the city are turning to rainwater harvesting to save water and soon turning them into an ecotel hotel. In other words, you will have a chain of basins. It plays a vital role in reducing the use of potable water and increase reliability on rainwater.
Nothing is more depressing than the millions of acres of concrete and asphalt that cover our urban environments, but at least we can deal with the little bits of concrete that we are responsible for. This way no leaves and twigs will fall into the water. The extent of the success of this method of rain water harvest depends entirely on the manner of storage of water. Landscaping for better water absorption Leaving out the car porch, you may plant the remaining area around the house with grass, or landscape it as per preference. This technique mainly requires one or two slabs and a few pipes. As a result, today, not only is there abundant water in summer, there is also reduced salinity, turbidity, and colour in the well water. Water used in kitchen sink, wash basin and in bathroom can be collected into a tank and reused for flushing toilet and gardening also.
Our staff is well trained in providing our services in time and also according to the requirement of the customers. The water stored in these structures is mostly confined to stream course and the height is normally less than 2 m and excess water is allowed to flow over the wall. How Rainwater Harvesting Solves Water Shortage? No land is wasted for storage purpose and no population displacement is involved. If you have asphalt paving to remove, follow the same technique. Similarly, if raw water is used for cleaning, gardening, etc.
Create a Rain Garden A rain garden is a sunken landscape that uses native plants, local soil, and mulch to remove pollutants from water, and allows it to percolate into the ground. Therefore, it reduces the chances of water scarcity as well. Building the madaka higher up ensures water in the lower areas until the end of summer. To harness the maximum run off in the stream, series of such check dams can be constructed to have recharge on regional scale. Most people in Kerala own small plots.