Decline in Water Inflow Prompts Closure of Three Gates at Bisalpur Dam

by

Ganpat Singh Chouhan

Bisalpur Dam

Tonk, July 30 — Due to a significant decrease in water inflow, three gates of the Bisalpur Dam in Tonk district were closed on Wednesday morning. As of now, only gates 9, 10, and 11 remain partially open — each by one meter — allowing a total discharge of 18,030 cusecs per second into the Banas River. This marks the lowest water discharge rate recorded this season. With the closure of gates, the water level in the Banas River is expected to drop by half.

Bisalpur Dam

According to Project Executive Engineer Manish Bansal, gates 8, 12, and 13 were shut at 6 a.m. due to the reduced inflow. Presently, 6,010 cusecs of water is being released from each of the remaining three open gates. Bansal added that the number of open gates and discharge levels will continue to be adjusted based on incoming water.

Water Release Pattern Over the Past Week

Last week, an increase in water inflow prompted authorities to open more gates and increase discharge. On July 24 at 4:55 p.m., gate number 10 was opened by one meter, initiating a release of 6,010 cusecs. Subsequently, on the morning of July 27, gate number 11 was opened by one meter, and gate 10 was expanded to two meters.

Later that night, at 8 p.m., gates 9 and 12 were opened by two meters each, increasing the total discharge to 48,080 cusecs. At 9 p.m., gates 8 and 13 were also opened by one meter each, bringing the combined outflow from six gates to a season-high 72,120 cusecs.

On the morning of July 28, as inflow slightly decreased, gates 10 and 11 were reduced to two meters each, lowering the discharge to 60,100 cusecs. However, on July 29 at 6 a.m., rising inflow led to both gates being opened again to three meters, returning the outflow to 72,120 cusecs.

As of July 30, with inflow declining again, three gates have now been fully closed.

Junior Engineer Dinesh Bairwa confirmed that the current water level of the dam stands at 315.50 RL meters, which is the dam’s full storage capacity. The ongoing discharge is being regulated to maintain this optimal water level.

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