Divers have been out to clean the tidal flood gates at the Lake Merritt Pump Station by 7th Street.
These gates are used as a barrier between the Oakland Harbor and Lake Merritt to control water levels while still allowing wildlife to come in and out of Lake Merritt.
Without flood control, during high tides and King Tides, the lake could rise too high and flood places like Lake Chalet and the Boat House area, and beyond.
Gates have gaps in between so that fish and other wildlife and swim to and fro. As seen in the recent massive fish die-off likely caused by a harmful algal bloom, tons of fish, bat rays, and other marine life spend time in the lake.
The divers are contracted by Alameda County to maintain the pump station, flood gates, and to clean off debris that impacts the use of the floodgates and pump station.
Growth includes “barnacles, mussels, tube worms, oysters, and soft growth organisms such as hydroids, tunicates, sponges, sea lettuce, and widgeon grass,” according to the county.