Storage systems to collect just runoff from the watershed were also built. In the flood plains, several unique systems to control and harness the floodwaters were devised. In regions with good groundwater aquifers, dugwells with innovative methods to lift the water were in use.
Deep wells were dug in the beds of tanks and rivers, both to serve as a source of good water when the water recedes and also to recharge the groundwater when they are fully submerged.
The inlet to the main tank ended in steps with curved walls to slow down the water.
Several wells were also dug in the bottom of the tank to ensure adequate water supply in the dry months.a.
The natural slope of the land was taken advantage of to bring water from the river Ganga to the tank by a nullah.
The water first passed through two deep earthen tanks, where the silt settled down, and escaped through the upper end of the settling tank.
Excavations have unearthed a fully brick lined tank that is 800 feet long, 60 feet wide and 12 feet deep.
These courtesans would dance, sing (especially ghazals), recite poetry (shairi) and entertain their suitors at mehfils.
Like the geisha tradition in Japan, their main purpose was to professionally entertain their guests, and while sex was often incidental, it was not assured contractually.
The image of the tawaif has had an enduring appeal, immortalized in Bollywood movies.
Despite being crisscrossed by a complex network of rivers, vast stretches of India have neither river nor lake to depend on.