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Class IV - Science: Our village - our tanks
One Word Answer Questions:
Q) In which century did Ramappa Tank was built ?
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Q) Panagal tank is located in which district ?
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Q) What is the other name of Osman Sagar ?
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Q) Hussain Sagar was built by ?
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Q) What is the main source of Nagalachervu tank ?
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Q) Which famous person was built in 1362 by Banjaras. Later on, it was developed by king Udai Singh?
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Q) Which season the flow of water in small canals is very rapid?
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Q) Hussain Sagar tank is located at which district?
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Short Answer Questions:
Q) Where is Ramappa Tank is located ?
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Q) Where is Hussain Sagar is located ?
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Q) Explain about Nagalachervu tank ?
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Q) Explain about Drought ?
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Q) Write a short note on Tanks-pollution?
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Q) Write a short note on Panagal tank?
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Q) Write a short note on History of Nagulacheruvu?
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Long Answer Questions:
Q) Explain about history of Nagulacheruvu ?
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Q) Write about Advantages of tanks ?
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Q) Write about Tanks-pollution ?
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Q) Explain about Tank management ?
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Q) Explain indetail about tanks in telangana state?
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Q) Exp[lain the Drought??
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Q) Exp[lain the Tank management / Management of tanks?
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Q) Explain the Ramappa tank?
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  • Nagulacheruvu tank is the main source of water for our agriculture. Since two years Nagulacheruvu didn't possess enough water, hence, we had to go for rainfed crops."
  • In rainy season the flow of water in small canals is very rapid. You should never get into such canals, otherwise you will be carried away by the rushing water.
  • ts_nagal
  • We all discussed about the tanks being filled with water and overflowing. The seeds to be sown, strength of the embankments etc. we could harvest two crops this year.
History of Nagulacheruvu

History of Nagulacheruvu
  • We practice agriculture, but our main occupation is to narrate the history of Nagulacheruvu.This is being practiced since the time of our ancestors. I know very well about Nagulacheruvu.
  • "Prior to Nagulacheruvu there used to be a small pond in that place. That pond used to get filled up even during small rains. The water from this pond was used by the farmers who have land near the pond.
  • Engineer Abdulbari surveyed the region near the pond and planned to convert the pond into tank.
  • Construction of the tank has, started. Everybody in the village was involved. It was a collective programme.First they identified the source of the flood water.
  • They dug canals from the regions from where the water was flooding. Then they started constructing bunds. They carried mud in bullock-carts from near by villages.They build the bund with stones from the inside. They brought stones from the nearby hills. They built two outlets from the embankment, on both the sides.
  • The outlet was constructed by Abdulbari. A scale in white paint was drawn to know the level of water. It helps to drain the excess water by letting it out. In the beginning people used to be surprised when the water was released. When a gate is opened water flows out into the canals. When it is closed water stops flowing.
  • Some tanks are connected with other tanks with the help of canals. Water flows from one tank to another in rainy season. Bukkapatnam, Dharamavaram tanks in Ananthapur district are of this type. In the same way canals are dug to fill the tanks with river water. Such tanks are found in Krishna, west and east Godavari Districts.
  • After completion of building the outlets, care was taken to prevent soil erosion.Soil erosion takes place when the water flows from the outlets. For this, large stones were layed in the path of the water. This work was taken up by the masons in our village.They dugged canals and built, them with cement and sand. These canals helps the water to flow into the fields.
  • "There was sufficient rainfall in the year in which we constructed the tank.Farmers sowed paddy crop. The harvest was very good. There was a drastic change in the lives of the farmers. Our family also came out of economic problems."
  • Big tanks of our state
  • Like Nagulacheruvu we have many tanks in the state. Let us know about our state.
  • Ramappa tank
  • In warangal district there is Ramappa tank near Ramappa temple. It was built during the 13th century,with an area of 24sq.km. This tank is the only source of water for agriculture for the villages near by. There are many hills and forests around this tank.Ramappa temple is known for its architecture.
  • Ramappa
    Ramappa tank
    Panagal tank
  • Panagal tank is in Nalgonda district. It is also called as Udaya Samudram, located 3 k.m away from Nalgonda town. It was built by Kakatiya King Prathapa Rudra. This tank is the source of irrigation facilities for thousands of acres. In the bank of Panagal tank, the famous Chaya Someshwara Swamy temple is located.
  • Panagal tank
    Panagal tank
    Hussain Sagar tank
  • Hussainsagar is located in Hyderabad. It is one of the biggest tanks. This was built by Hazrath Hussain Sha wali in 1562. The bund of this tank was made into a road in 1946. This bund joins the twin cities of Hyderabad and Secunderabad. The area of this tank was 5.7sq.km but has decreased now. Filled with Eichhornia plants, waste thrown by visitors, inflow of drainage water, industrial effluents etc.,another important and major cause of pollution of this tank is immersion of 'Ganesha idols'. The depth of the tank was 32 feet but it got silted to a large extent. Now the government is trying to depollute the tank.
  • Hussain Sagar tank
    Hussain Sagar tank
    Osman Sagar tank
  • Another tank in Hyderabad is 'Osman Sagar'.It was built on the sub river of Musi. It is also known as 'Gandipet tank'. To this day the water of this tank is being used for drinking by the people of Hyderabad.
  • Osman Sagar tank
    Osman Sagar tank
    Advantages of tanks
  • Many people have farms near Nagulacheruvu. This is the only source of water for agriculture. When the tank is full it is like a feast to farmers and agricutural labourers. Children of our village learn to swim in this tank. People wash clothes and take up fishing. Now-a-days small fishes are let in to the tank for breeding.Fibre plants like Amaranthus, Jute, flax etc., are soaked in water to make ropes.
  • Three years ago borewells were drilled and water tanks were constructed to supply water to every house. To this day Nagulacheruvu is the only source of drinking water for birds and animals.
  • When the tank is full the level of water in the wells, tubewells, check dams rise.When the level of water in the tank decreases people take up fishing, some farmers grow water melon, musk melon and cucumbers.
  • Farmers take up desiltation during summer.This mud is used in their fields because it is very fertile. Desilting helps in increasing the capacity of the tank.
Tanks pollution and Management of tanks

  • Tank is getting polluted in different ways. The people of the village wash their clothes in the tanks. Many people don't have toilets and use tanks for the purpose,they wash cattle etc. People immerse Ganesha idols in the tank every year.
  • The colours used are very poisonous chemicals which pollute water in the tank due to which fishes are dying. The sewage water from the houses are let into the tank. The people who visit tank in the evenings for relaxation throw eatables and empty covers into the tank. Such activities make the water polluted.
  • Chemical effluents from medicine manufacturing factories make the underground water and tank water polluted. Once the water of this tank was used for drinking, but now it is fully polluted.
  • Now-a-days some programmes are being taken up to control water pollution.Last year some people planned to establish an industry near the tank but the people of the village stood against the decision and won.
  • We cannot see that tanks today, it is occupied by new houses,nobody can imagine that there used to be a tank in that place earlier.

  • Drought:
  • Due to de-forestation, there is reduction of greenary.Due to reduction of trees the Heat from the sun is falling on the earth directly rather than on trees. This is leading to warming of earth's atmosphere.
  • This leads to decrease in rainfall, ultimately leading to drought in some areas.
  • Due to failure of rains farmers are drilling borewells and drawing underground water from very deep layers.This act is causing great damage to the environment.
  • Many people who live in villages are travelling long distances to fetch water. Most of them are depending on the tankers supplied by the government.
Tank management / Management of tanks
  • Tanks can be checked manually with a stick treated with water-finding paste, before and after deliveries.
  • Automatic tank gauging systems (ATG), use senors that automatically detect the presence of water and alert the operator.
  • Check for water bottoms. Water bottoms occur when water (being heavier than fuel) sinks to the end of a storage tank that has settled to one side. Make sure to check the low end of the tank for a water bottom. A tank should never go more than 6 months without having a water bottom removed.
  • Install water-sensitive fuel filters. If water is present in the tank, the fueling process will slow down.
  • Talk to your fuel supplier about what measures they take to ensure your fuel is delivered without water.
  • Enlist the services of a water removal service/contractor. These contractors can also provide regular storage tank maintenance and cleaning, including treatment of the tank with a biocide that inhibits the growth of microbes as a result of the presence of water.
  • Check the pollution in bunds, because the tank is the only source of our livelihood.
  • Udaipur - which is in the state of Rajasthan is called the city of lakes. Udaipur has many lakes, hence the name has come. In ancient period these lakes were constructed to use the water for drinking and agricultural purposes.
  • Among all the lakes in Udaipur 'Pichola' lake was an important one. It was built in 1362 by Banjaras. Later on, it was developed by king Udai Singh. All the places in Udaipur were built on the banks of these lakes.
  • Among them 'Jagnivas' and 'City palace' are important.
  • ts_udaypur
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