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iv. Sluice gates and surplus weirs: During previous visit in March 16-17, 2020, the concerned authority assured that the repairing works of sluice gates and surplus weir at the outlet of the Hussain Sagar Lake will be completed immediately after monsoon season. During this visit of Joint Committee did not observed any changes in the existing structure new work undertaken. State Irrigation department (HL&WBMC) informed that Hussain sagar lake has two surplus weirs and six sluice gates to control flood water during monsoon. Regular repairs of sluices at upstream and downstream are taken up as a part of pre monsoon maintenance for minimizing flood due to inflow of water into Hussain Sagar lake.
The following repair works were taken between the year 2015 and 2017 and no repair works carried out thereafter. The repair works for surplus weirs were not taken up due to continuous flow of water from the lake and after that no other works are carried out: 
    Repair works to left side surplus weir
    Repairs to sluice no. 1 & 2 near to the left side surplus
     weir
    Repairs to sluice no. 3 called Kukkala Thumu near
     Dhobighat
    Repairs to sluice no. 4 called Khajana Thumu near
     Dhobhighat.
    Construction of submerged sluice with pipes at vent no. 14
with a discharging capacity of about 550 cusecs. It was informed that repair works to surplus weir will be completed by this year-end to bring total weir portion to its original level. The committee visited and seen the sluice gates no. 1, 2, 3 &4, other two sluice gates 5 & 6 is not operated & repaired due to encroachments. The sluice gates no. 1 & 2 are at 508m above MSL and sluice gates 3 & 4 are at 506m above MSL.

5. Status of water quality in nallah's & Hussain Sagar lake after temporary measures taken by the Government: