The present invention relates to the field of irrigation technology, in particular to a renewable- solar energy powered irrigation system that is floating and mobile and useful for irrigation alongside the river banks even with receding water level.
BACKGROUND OF THE INVENTION
Irrigation equipment are used to irrigate farmland for agricultural production. For successful irrigation the supply of water should be adequate at an economically reasonable capital investment per unit of area and it must be easy for operation and maintenance. Furthermore, groundwater level is at alarming level, we have to conserve that water and use other sources such as rivers for the purpose. The river beds and fields along rivers have source of water just at small distance and can use it for irrigating the fields. Most of the land alongside these rivers can be utilized in agriculture/horticulture production to help in increasing food production and income of people residing in these areas. Nonetheless during lean season the descending water levels in the river makes the river beds fallow as sometimes the water source gets far off and it becomes difficult to irrigate the fields alongside the banks with ordinary irrigation equipment. During lean season the descending water levels sometimes gets as far off as 400-800 m. As the river beds and fields alongside the river bank can easily use water from rivers for irrigation purpose, an irrigation system supportive predominantly for this area even during the lean season would be real advantage to increase the productivity of crop as this will overcome the constraints of using traditional irrigation methods in this area.
Usually, the traditional irrigation system that are used in the fields to irrigate the land, mainly work with a diesel engine or with the local power grid. Though, diesel pumps are slightly more efficient than the AC pumps as they allow greater flexibility, however, one of the main constraints is that this system relies on the fuel availability because sometimes the fuel is not available in these areas plus it add to a greater impact on the environment. Electric connection is difficult to

reach in these areas and if somehow the electric connection is available, the uninterrupted electricity is not guaranteed. In this way, these two modes of operations present disadvantages. Besides, there are some other constraints, which add to the irrigation problem such as farmers having long stretch of land along the bank of river needs many pumps to be installed which increase expenses and maintenance costs. If somehow the irrigation system become available in these areas, it become difficult to provide the said connection with efficiency in varying levels of river water in different seasons. Plus, ordinary irrigation equipment are not able to acquire water from other sources, and the equipment are so heavy that it becomes tedious to move the system again and again alongside a long stretch of land of river bank area. This scenario makes major portion of land and crop gets wasted due to lack of proper irrigation. So, farmers cannot rely on the traditional irrigation system much in these areas.
Thus, using an independent and alternative energy system along with the good water resource can be a solution for the farmers. As the electricity supply is not regular in these areas, so a system with sustainable generation of energy to run pumps can be advantageous. Additionally the placement of the pump not getting affected by receding water levels in the river and the flexibility to carry the water to the river bank field for irrigation of the crops on the river banks during the lean season also when river descends down a lot due to depleting water charging from source would be profitable. In solar powered systems, the source of energy is free, therefore, after the amortization period, there is no longer operating costs; only the maintenance costs must be considered. Therefore, solar energy powered system that addresses these constraints can turn out to be a viable long-term investment for these farmers in increasing their crop yield.
There are some systems in the prior art which describes the various modes of irrigation system but the efficiency, output and reach to the water source other than groundwater needs to be increased to make it cost effective and easy to use for farmers of these river bank areas. The traditional pump irrigation system is not carryable and sometimes gets damaged too due to various reasons. To irrigate a

long stretch alongside the riverbank, many pumps are required to be installed; increasing the investment in irrigation for farmers. The solar capturing units not able to capture the solar energy to its fullest so the efficiency is not very high. Some other systems use the ordinary pumps which are not very efficient. A provision for holding the water pump which is movable and keep the suction pump safe from water debris is lacking.
Therefore, there is a need to provide an irrigation system that can utilize the water resource present around that field without the dependency on electricity; means an energy saving, cost effective and easy to use system for the farmers. More particularly, a practical solution is required for irrigating river bank agricultural field in lean seasons when water level in the rivers recede to a level making it impossible to irrigate the lands with traditional methods. The system, which has solar capturing system installed in such a way so as to capture the maximum solar energy; increasing the efficiency of the irrigation system and not disbalancing the floating body on water. A system that can utilize the water resource present around that field without the dependency on electricity and also distribute the water directly to the crops to a long distance from river.
OBJECTIVES OF THE INVENTION:
It has already been proposed that there is a need to fulfill the demand of a system that can manage the irrigation alongside the river during different seasons with different water levels in the river with an easy to operate, maintenance and capital investment approach for irrigation.
The objective of this invention is to provide an irrigation system to solve the problems raised in the above-mentioned background art; In order to achieve the above objective, the present system provides a technical solution comprising various components.
Another objective of the system is to use submersible pump which works with more efficiency, operates inside the water, and then rest outside the water with a system which help it in moving up and down.

Yet another objective of this invention is to provide the irrigation to the field without dependency on conventional source of energy that is electricity or fuel.
Yet another objective of the system is to provide a system on which the solar energy capturing units to capture the solar energy is fitted in such a way that it is movable to collect the solar energy from all the direction whichever provide the largest amount of solar energy.
Yet another objective of the said embodiment is to use single submersible pump to cover a major area of the agricultural field.
Yet another objective of this system is to reduce expenses as maintenance costs in installing multiple pump systems.
A further objective of the present embodiment is to provide a system which is energy saving and cost effective.
A further objective of the said system is to increase the efficiency and output of the said objective to get higher returns.
A further objective of the present system is to design it in such a way to help farmers having agricultural lands along the bank of a river.
A further objective of the invention is to provide floating and mobile, irrigation system to cover larger areas along the river banks.
A further objective of the invention is to provide floating and mobile, irrigation system that can operate even in shallow water.
Another objective of the invention is to provide adaptations of a submersible pump-floating structure combination for the supply of water from the water body to the land alongside the water body.
A further objective of the invention is to provide a complete solution to the selection of methods and practices, appropriate to the special conditions of river bed agricultural fields.

Yet another objective is to provide a combination of a submersible pump, solar energy capturing units for trapping solar energy and water supply with or without foldable pipe units to the land.
The foregoing and numerous other important objectives and advantages and inherent functions of the invention will become apparent as the same is more fully understood from the following description, which, taken in connection with the drawings, discloses a preferred embodiment of the invention.
SUMMARY OF THE INVENTION
The present invention proposes irrigation system powered by solar energy and mounted on a floating structure for irrigating river bed agricultural field in lean season too when water level in the rivers recede to a level making it impossible to irrigate the lands with traditional methods. It is a system appropriate for the special conditions of river bed agricultural fields.
This irrigation system is designed to irrigate agricultural land stretch along the bank of the river to provide the water to the crop with efficiency. These areas usually don’t have electricity to run the pump set due to various reasons. This system supply the water to the crop alongside a long stretch of the river bank with river water whereas it cannot be irrigated using one pump due to the long stretch. Moreover, during drought conditions when the water level of the groundwater as well as river recedes, this system is efficient with the descending water level of the water reservoir also.
The present disclosed irrigation system comprises of an renewable energy- solar power energy capturing unit and the like mounted onto a floating structure such as Boat with an arrangement to revolve in such a way so as to trap the solar energy to the fullest, a water pumping device such as submersible pump powered by said solar energy, a special structure to keep the pump during movement and plurality of hoses and pipes for transporting the water for irrigation purpose.
Another aspect of this irrigation system with submersible pump mounted on boat that runs on electric energy produced by transforming the solar energy, is to
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provide a solution to irrigate along the bank of the river to many farmers who possess agricultural land stretch of 4 km along the bank of river and lacking electricity to run the pumps, wherein also the 4 km long stretch cannot be irrigated using one pump.
In an aspect the method of operating this whole solar based irrigation system the solar energy is captured by solar energy capturing unit which is tilted according to the presence of sun and capture the solar power; this captured solar power is then used in operating the said water pumping device that is the submersible pump which has a better efficiency for irrigation. The solar energy is converted into electricity and connected to a water pumping device through a solar controller which is used to produce stable output voltage to pump. The pumping water may be used to directly irrigate the land alongside the riverbank or can also be stored in a water reservoir, if possible, to be distributed to irrigate the fields later.
This system with another aspect of cost reducing mechanism as it uses solar energy which is free of cost thus avoiding fuel or conventional electricity and also the system is fixed on boat which can travel to different irrigation areas with single pump; means a single pump can irrigate larger field so no need to install many pumps. The present design is efficient, economical and reliable.
This solar powered water floating irrigation system, predominantly for the river bank area is the solution to irrigate the fertile lands on the banks of river thereby enhancing agriculture in various remote locations where electricity and water resource are a major challenge. This system is intentionally designed to irrigate land along the bank of river with river water using renewable solar energy as only source of power supply to run the pump. This has been designed to give best discharge with high-energy efficiency which gives 40% more discharge than other ordinary pumps sets. This technology is neither dependent on electricity nor on diesel, thus people at remote locations can avail the benefit and enhance their cropping area with regular water supply through the said irrigation system. It is sacrosanct from electricity, which hampers productivity of crops due to load sharing and interrupted electric supply.
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As described earlier, this irrigation system is derived from the integration of various components such as sustainable generation of energy to run pumps, the placement of the pump which does not get effected by descending water levels in the river and the flexible system to carry the water to the river bed field for irrigation of the crops that direly irrigate thousands of acres of land on the river beds during the lean season when river descends down a lot due to depleting water charging from source.
The irrigation system comprises of a submersible pump which can be operated inside the water. Usage of the said pump increases efficiency which monoblock pump cannot deliver. This system reduces expenses as maintenance costs in installing multiple systems is saved. So this is energy saving and cost effective for the farmers.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring to the drawings:
FIG.1a illustrates a schematic diagram of the top view of the system;
FIG.1b illustrates a perspective side view of the full system; clearly showing various components of the system;
FIG. 2 illustrates the plan view of the wooden part of the embodiment; clearly showing a plan and dimensions of tapering end A and a distal end B, The structure is hollow inside and bent on the outer surface;
FIG. 3 illustrates a profile side view of the wooden part of the embodiment, which is tapering at one end A and flat at another end B;
FIG. 4 illustrates the plan view of the said embodiment with the Solar energy capturing unit C, showing clearly its expansion from one end to another end in and around of the wooden structure for capturing solar energy.
FIG. 5 illustrates a profile side view of the system; comprising a wooden part of embodiment A to B, the anchoring system D on which movable solar energy capturing unit C is fitted on the system E in such a ways so as to capture the
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maximum energy; moreover it shows the distal end which holds the submersible pump F, to be used to draw the river water and system G,I,J for the easy up and down movement of the submersible pump F, and a hollow cage H designed in such a way so as to keep the pump when not in use;
FIG. 6 showing the horizontal cross sectional view of the pump F submerged inside the river; with help of the system G.
FIG. 7 showing the perspective outer view of the pump F again pulled back in a cover H on the floating structure till the next destination.
FIG. 8a illustrates inner view of solar energy capturing unit C which captures the solar energy.
FIG. 8 illustrates the outer view of the Solar energy capturing system C that captures the solar energy and it is transformed into the electric power to run the pump; FIG. 9 illustrates the detailed schematic representation of the capturing unit C wherein Fig. 9a shows the isometric top view of the solar energy capturing unit C, Fig. 9b illustrates the isometric front view of the unit, and Fig. 9c is the schematic representation of the isometric side view of the same movable solar Energy capturing system.
DETAILED DESCRIPTION OF THE INVENTION:
The following description, which, taken in connection with the drawings, discloses a preferred embodiment of the invention.
Referring to the Fig. 1a, it shows the top view of the irrigation system comprising the canopy of the solar energy capturing unit that is mounted on a wooden structure that is a boat, having a tapering end A and a flat distal end B at the opposite side of the tapering end. The solar powered floating irrigation system in a full view with all the various components of the system; a water floating structure, solar energy capturing units to trap the solar energy from the direction where the maximum energy can be captured, frames, pumping with submersible pump with a system to lift and submerse it according to the requirement is shown in Fig. 1b. The system comprising a wooden boat (Fig. 2, 3), a canopy with the solar energy
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capturing unit (C, Fig. 4), the movable anchoring system (D, E Fig. 5) on which solar energy capturing unit C is fitted on the unique movable system in such a ways so as to capture the maximum solar energy. At the distal end it holds the submersible pump (F, Fig. 5), to be used to draw the river water and a system (G, I, J FIG. 5) for the easy up and down movement of the submersible pump F (FIG. 5), and a hollow cage (H, FIG.5) designed in such a way so as to keep the pump inside when not in use.
The said embodiment comprises of a wooden boat shaped structure, which is essential to provide a mobile irrigation to the fields on the riverbank area. Referring to the Fig. 2 this wooden structure is app. 8 m in length and app. 2 mt in breadth at the middle; made particularly of Jamun wood and the structure is tapering at one end, the other end is specially designed in a manner that the submersible pump is fixed at the end B with a frame G (Fig. 6,7) in such a way with the pulley system (J, FIG. 6,7) so that it is easily be moved up and down for the operation of the agriculture irrigation. The structural design facilitates the whole irrigation system to move in one direction easily. The tapering end A starts to taper where the breadth of the boat is 0.97m and helps in cutting the water in the river to help the movement of the irrigation system from one place to other place. The distal end B that is flattened and designed in such a way that it makes the system stable to carry the submersible pump system, facilitates the whole irrigation system to move in one direction only and easily too.
Another structure of the embodiment consists of six solar energy capturing units, mounted on the wooden part of the system forming a rectangular canopy over the wooden structure. (C, Fig.1). The solar capturing units are fitted in a frame that accommodate all the six solar energy capturing units in a frame and form the canopy over the wooden structure. The frames are fitted on a sturdy anchoring system (D,E, Fig. 5) that is a Mild steel and GI structure, which makes the canopy durable and at the same time keeps the weight of the whole irrigation system low. The supporting anchoring system runs perpendicular to the frame. In the designing of the present system, all the careful measures have been taken into
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account to make the structure sturdy enough to consider the various factors such as wind.
The solar canopy forms a structure wherein all the solar capturing unit are connected in series mode (positive of one unit to negative of other unit). Then the positive and negative of last solar capturing unit is connected to positive and negative terminals of MCB in the controller. The structure to anchor the solar capturing unit is designed in such a way that the capturing unit can be tilted as per the sun’s direction to provide maximum sunlight on the solar for effective output. The said embodiment comprises of solar capturing units wherein these six solar capturing units comprises of 300 watt power capacity each which produces maximum power of 300Wp, comprising open circuit voltage of 44.45 V with short circuit current of 8.58 A. At maximum power, 8.09 A current may be attained, while the maximum system voltage reaching up to DC 1000V, wherein as a result in totality 1800 watt of solar capturing unit are there, which provide sufficient power to run the pump.
The solar energy is captured through the capturing unit with radiation-absorbing elements fitted on the specialized structure that is essentially a charger that transforms captured energy into an electrical DC charge. Wherein in other words, the operation comprises the hit of the photons at a solar cell, the electrons is released from their atoms. If conductors are attached to the positive and negative sides of a cell, it forms an electrical circuit. The electrons then become agitated and begin to jump from one atom to the next, creating an electrical chain reaction in the form of a DC charge. When electrons flow through such a circuit, they generate electricity. These solar capturing units generate direct current (DC) electricity. This current then flows to a control panel, which manages the power generation. Electricity generated from these solar capturing unit is converted using MPPT charge controller and supplies to pump for this operation. Using a program called Maximum Power Point Tracking the control box can regulate the speed of the pump motor so it runs at best efficiency. It also protects the pump motor from over voltage or low power situations. It can also start and stop the pump based on
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input from sensors and at the same time displaying the systems status. Whenever the sun shines the current turns the motor on and the pump starts operating. If there is a requirement to run the pump for longer hours eg. at night, then in another embodiment of the invention, a battery system can be included. This can store electricity during the day to run the pump later, but it does require more solar capturing unit to charge the battery.
The Solar energy capturing units will produce energy even if they are not placed under direct sunlight. It is to be noted, however, that the power output of a solar panel is proportional to the amount of light that reaches its surface, so the anchoring system that can be tilted towards the sunlight helps in capturing the maximum radiant energy. From morning to evening sun changes its position hence a fixed tilt angle is not perfect for getting maximum output from solar energy. It is a special base structure for solar capturing unit (9a, 9b, 9c, Fig. 9). User can change the angle up to 60° and change the direction to 360°. It gives the convenience to use maximum of solar energy and use of the system as pump can start early in morning and can be used up to late evening. The system gives the flexibility to select a location where solar capturing unit will get maximum daily sunshine exposure avoiding any shade. (Fig. 8, 8a) Furthermore, at the rear end of the wooden structure is mounted a submersible pump in a systematic way. Wherein the submersible pump is attached to the distal end B on a platform with the help of frame G so as to allow to easily start the irrigation by submersing it into the water to start irrigation and then pulled back to keep safely in a cover, described here as cage (H, Fig.5), when not in use and then the embodiment can be driven to the next fields alongside the riverbank. Another aspect of the invention is that it can provides irrigation to the land along the bank of river of long stretch using only a single pump, which runs on solar power thereby avoiding conventional electricity. This entire system move along the river and irrigate any part of the land adjacent to the bank of river. The system can also use a flexible foldable pipe units connected to the pump to supply water to the land depending upon the requirement.
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Referring to the Fig. 6 and 7, the pump is packed in a cage (H) to protect it from entering debris and waste materials into the pump, which causes damage of pump. The submersible pump is hanged at the backside of the floating structure using pulley mechanism which helps to submerse the pump into the river during irrigation period and can be pulled back to the floating structure level when not in use, as described herein. The mechanism of the pulley is easy to operate. Pump is arranged on the wooden structure using MS wire over a pulley and this wire is fixed to a gear box (I, Fig. 6). This gear box is provided with a handle to lift or lower the pump into the river. During irrigation the pump is lowered into river and after irrigation the pump is lifted to the top and gets locked using chain and lock arrangement. Accordingly, the pump mounted on the wooden structure comprises a pump housing H, an intake units and an outlet units as present in most systems. In operation, the intake pipe units has its lower end submerged below the level of the body of water body in which the boat AB is floating. The Water is drawn through the inlet pipe units and is pumped from the outlet pipe units and water is discharged into the field for the irrigation purpose.
The present invention that is an irrigation system is designed to operate 2 HP submersible pump which gives 40% more discharge than AC pumps inside the river. The said pump sucks water from river and provide to the agricultural land on the bank of the river directly or using piping system to a farther land. Submersible is more efficient in water suction compared to normal pump. The submersible pump is efficient enough to fill the water up to 53 meter (Max head) with 12000 liter/hour water supply. Because of higher head it can supply water to longer distance, which is up to 1500 meter from boat area. Wherein the system can run with the receding water level of the river also as it can be used at a depth of 4 feet of water. In a day this irrigation system can irrigate up to 10 acre of lands with its high discharge of water. Moreover, the said system is having sufficient space (16 m2) to carry a long water supply flexible pipe and other agriculture tools.
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Operating costs of diesel driven pumps are quite high and depend heavily on the diesel price. The electricity problems are evident and well explained above. In present solar powered irrigation system, it works the other way round, that is, the source of energy is free, therefore, after the amortization period, there are no longer operating costs. Therefore, this system can be a viable long-term investment.
Another structure of the embodiment is the controller, pump is connected to solar controller and pump is switched on/off using a toggle switch in the controller. The said solar controller is used to produce stable output voltage to pump. In fact the entire operation is controlled using the said controller and it can switch on /off the pump and also monitor the performance parameters displayed on the controller. Furthermore, a display is provided with the system to monitor the different parameters such as Frequency, Voltage, Current and few other parameters of the system on the display screen placed on the controller. Wherein the display screen is a LED screen. Additionally, the controller door is locked to avoid water or dust to enter into the control panel, which damages the internal circuit.
The advantage of the present embodiment is that it provides solution to irrigate the fertile lands on the banks of river thereby enhancing agriculture in various remote locations where electricity and ground water resources are a major challenge. This system is purposefully designed to irrigate land along the bank of river with river water using solar energy as only source of power supply to run the pump.
This system has been designed to give best output with high energy efficiency which provide more output than other sources. This technology is neither dependent on electricity nor on diesel, thus people at remote locations avail the benefit and enhance their cropping area with regular water supply using the said system. Even with the receding level of water in river the irrigation is possible with the help of submersible pump more efficiently. The system is self-sufficient in generating power to run the system. The entire system can promote irrigation along the bank of river using single system by moving the boat on river from place to place.
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Apart from using clean energy, the present irrigation system is a significant step towards the sustainable agriculture since they do not pollute water, do not release harmful emissions, are very easy operations with a lower cost of ownership. The operating cost is very low. This system is free from problems like feeder damage; supply cut, rate hikes etc. It has been observed that due to frequent voltage fluctuations most of motors get burnt and maximum time they are lying at service centers. But, this system provides constant and good quality of energy that enhances life of pumps.
The invention provides a solar energy operated system that is affordable in the interior regions and aims at increasing local farmer's productivity and as a consequence, improving their living conditions. The use of this invention will allow to produce the crops all year round, even in dry season and thus to increase their income and strengthen their position in the market. The said system is designed in such a way that makes it efficient, economical and reliable.
The above presents a description of the best mode contemplated of carrying out the present invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains to make and use this invention. This invention is, however, susceptible to modifications and alternate constructions from that discussed above which are fully equivalent. Consequently, it is not the intention to limit this invention to the particular embodiments disclosed. On the contrary, the intention is to cover all modifications and alternate constructions coming within the spirit and scope of the invention.
Thus, while the invention has been described with particular reference to specific embodiments in the Interest of complete definiteness, it will be understood that it may be embodied in a variety of forms diverse from those specifically shown and described, without departing from the spirit and scope of the invention.

CLAIMS:

The intention is to cover all modifications and alternate constructions coming within the spirit and scope of the invention as generally expressed by the following claims, which particularly point out and distinctly claim the subject matter of the invention:
We claim,
An irrigation system mounted on a water floating system for the river
bank area comprising of:
o A plurality of solar capturing units- six in number, attached on a
movable frame forming the canopy of the water floating system o A water submersible pump with a specially design enclosure
having pulley mechanism system to move the pump up and down,
mounted on the floating system with the help of a frame, wherein
the pump is powered by the radiant energy o A hollow clasp system to hold the submersible pump o A controller to control the supply of electricity to run the pump o The wooden water floating structure o and plurality of pipes and hoses
The irrigation system mounted on a water floating system as claimed in claim 1, wherein solar energy capturing unit is mounted on the floating structure with a light weight and sturdy anchoring system and frame improving the stability of the boat against heavy winds & floods and also providing balanced movement while sailing. The irrigation system mounted on a water floating system as claimed in claim 2, wherein the anchoring system can be tilted according to the sun direction so that capturing the maximum light and getting used in running the system in areas where adequate electricity is not available.

The irrigation system mounted on a water floating system as claimed in claim 1, wherein the submersible pump, mounted on the rear flattened side of the water floating system is moveable in up and down direction and only one single pump to irrigate the huge agricultural land adjacent to the river.
The irrigation system mounted on a water floating system as claimed in claim 4, wherein the movement of the submersible pump is done with the help of pulley mechanism with help of a specially designed structural system and the pump having an inbuilt feature that in case the water level in the river goes below the minimum level, the pump automatically stops functioning.
The irrigation system mounted on a water floating system as claimed in claim 1, wherein a hollow structure with two parts is formed to cover the submersible pump for keeping it safe from water and water debris, wherein this is designed in such a way that it contains a filter to restrict the debris or river waste to enter into the suction of the pump. The irrigation system mounted on a water floating system as claimed in claim 1, wherein the said system further comprises of interface for connecting the power generating solar capturing unit with a MPPT controller circuit in between connecting both of them. The irrigation system mounted on a water floating system as claimed in claim 1, wherein the system is provided with digital controller for initializing the operation of the submersible pump and the controller is further provided with a monitor to get the information about the operation.
The irrigation system mounted on a water floating system as claimed in claim 1, wherein said Controller is provided with an energy flow regulation system.
The irrigation system mounted on a water floating system as claimed in claim 1 that provide the adaptations of a submersible pump-floating

structure combination for the supply of water from the water body to the land alongside the water body.