The invention relates to the field of
water environment protection of artificial lakes, and discloses a
seawater artificial lake in an offshore area and a
water environment monitoring
control system and a control method thereof, the
seawater artificial lake comprises a dam used for isolating a
peripheral seawater area and an artificial lake area; the
cofferdam divides the artificial lake area into a landscape area and a desilting area located between the landscape area and the dam, and an anti-seepage curtain is arranged in the
cofferdam; the buffer baffles are used for buffering seawater
impact between the adjacent separation areas; the drainage gateway is communicated with the artificial lake area and the
peripheral seawater area and is used for discharging the
water body of the artificial lake area, and the opening degree of a water
inlet valve is controlled based on the seawater level and the sand content of the offshore area, so that the seawater with the lower sand content on the upper layer of the
water body enters the sand
settling area at a proper flow rate for
water body supplementation; the filtering seepage pressure of the anti-seepage curtain is reduced, and meanwhile, the sand content of the water body supplemented into the landscape area is low, so that the requirements of transparency and attractiveness of the water body of the landscape area are met.