October 24-November 15, 2021 Operations Report
/Kevin Southworth, Operations Manager
During this period:
Water use status returned to “Normal” October 31 as reservoir levels increased to historical levels.
Replacement blowoff valve at the Holiday Lake dam spillway on November 11.
Keith Doran, Arborist removed three trees, including a large tree growing in the Holiday Lake Dam as required by DOE Dam Safety, and also chipped piles from fallen trees at various locations on November 11.
November 15 presented multiple emergencies due to heavy rains:
The Dickenson Lake reservoir level increased 3 feet in 24 hours, and the Holiday Lake Dam reached maximum overflow. .
The storm runoff into the lakes resulted in very turbid water. The treatment plant was not able to reduce turbidity to drinking water standards. Until the lakes settle out, no water treatment will happen. There is enough storage of water in the tanks to supply the system for days. We have asked all water users to conserve until we can treat water again.
At Beach Ave between Aiston Creek Drive and Cedar Ave the road washed out, exposing and breaking a water main. This caused an estimated 80 gallon per minute leak until that section of the main was valved off. Three residential connections are without water service until we can safely access and repair the broken main.
A power outage and related road closure on Seacrest mid-morning cut off all vehicle access to the north end of the island.
October 2021 Water Usage (in gallons)
From storage tanks 425,370 Chlorine monitoring feed (0.178 gpm) 7,950
Net to distribution 417,420
Flushing 10,500 Dewatering Estimated (10/18) 25,000 Residential meters 299,340
Unaccounted for water 82,580 Percentage of loss 21.6%
