A flood barrier for protecting the environment having a venturi type effect pumping means not requiring external power, the flood barrier comprising a wall and a pump for drawing water across the barrier from a first side to a second side. The wall configured to provide a barrier preventing movement of water from the first, drain, side to the second, tributary, side, of that wall. The barrier further comprising a pipe traversing the wall for transferring water between the two sides of the wall the pipe being terminated in the first side of the wall at a venturi effect pump, the pump being feedable with water from the drain through a conduit inlet so as to create suction in the pipe for drawing water through the pipe from the second side of the wall to drain water from the second to the first side of the wall.

A dynamic fluid flow control structure is provided that allows precise control over fluid flow using a series of two or more orifices, at least one of which may be reconfigured to change its flow characteristics. A flood control system and a flood control process are provided that emulate a preset discharge profile over time. Some versions of the structure, process, and system can be used to provide controlled storm discharge patterns in a developed area that emulate the natural pre-development discharge patterns.

The invention relates to a separation device for removing objects from a water flow, comprising a separation screen and a channel which forms an inlet and an outlet for the separation screen, wherein, during operation, a head water having a head water level can be provided in the inlet upstream of the separation screen and a tail water having a tail water level can be provided in the outlet downstream of the separation screen, wherein the outlet comprises an outlet cross-section for the water flow. The separation device is characterised by a damming body, which can be adjusted via an actuator, for immersion into the outlet, said damming body being able to be adjusted at least between a first position and a second position, wherein the outlet cross-section is smaller in the first position and the outlet cross-section is larger in the second position, and comprising a control device, wherein the control device includes a first operating mode, in which the flow rate in the area of the separation screen is increased by bringing the damming body from the first position to the second position, wherein the control device includes a second operating mode, in which the flow rate in the area of the separation screen is changed by bringing the damming body from the second position to a third position, wherein the outlet cross-section in the third position is smaller or larger than in the second position, and wherein the control device is configured to automatically activate the first and/or the second operating mode. The invention also relates to a method for operating such a separation device.

A flood-protective ventilation louver includes a window frame assembly, slat assemblies, a transmission mechanism, and a buoyance switch assembly. During flooding, external water passes through the window frame assembly into the buoyance switch assembly, such that the buoyance switch assembly is caused to release the transmission mechanism from constraint to thereby allow the slat of each of the slat assemblies to oscillate downward automatically and thus automatic closing is realized.

A flood-protective ventilation louver includes a window frame assembly, slat assemblies, a transmission mechanism, and a buoyance switch assembly. During flooding, external water passes through the window frame assembly into the buoyance switch assembly, such that the buoyance switch assembly is caused to release the transmission mechanism from constraint to thereby allow the slat of each of the slat assemblies to oscillate downward automatically and thus automatic closing is realized.

A spillway water system comprising at least one adjustable barrier sluice gate of one watercourse and defining: one upstream stretch and one downstream stretch of the watercourse arranged upstream and downstream of the sluice gate respectively; one spillway point arranged at a spillway height and at which a spillway water flow rate skims which flows from the upstream stretch and flows into the downstream stretch; the sluice gate comprising adjustment device/unit adapted to raise or lower the spillway height; a first measurement device/unit for measuring the level of water flowing along the downstream stretch; a second measurement device/unit for measuring the level of water of the upstream stretch; and a command device/unit of the adjustment device/unit operatively connected to the first and to the second measurement device/unit and configured to raise or lower the spillway height depending on the level measured by the first and the second measurement device/unit.

A dam according to the present disclosure includes a main dam including a first reservoir, and at least one first discharge part configured to discharge water stored in the first reservoir, an auxiliary dam spaced apart from the main dam at a predetermined interval and including a second reservoir configured to store the water discharged from the main dam, and at least one second discharge part configured to discharge the water stored in the second reservoir, and an underground water path being provided separately at a lower side of a bottom surface of the river or stream under a lower side of the second reservoir, and including a third discharge part.

A dynamic fluid flow control structure is provided that allows precise control over fluid flow using a series of two or more orifices, at least one of which may be reconfigured to change its flow characteristics. A flood control system and a flood control process are provided that emulate a preset discharge profile over time. Some versions of the structure, process, and system can be used to provide controlled storm discharge patterns in a developed area that emulate the natural pre-development discharge patterns.

Methods, systems and computer program products for determining an accurate flow rate based on limited observations are provided. Aspects include receiving a limited sample of flow rate data associated with a test site of a test river. Aspects also include determining topographical characteristics of the test site. Aspects also include determining a plurality of similar tested sites and generating a test site rating curve based on a combination of the limited sample of flow rate data and sufficient flow rate data associated with one or more of the plurality of similar tested sites. Aspects also include obtaining a stage reading associated with the test site from a sensor disposed at the test site. Aspects also include determining a flow rate of the test site based on the stage reading and the test site rating curve.

A flood barrier for protecting the environment having a venturi type effect pumping means not requiring external power, the flood barrier comprising a wall and a pump for drawing water across the barrier from a first side to a second side. The wall configured to provide a barrier preventing movement of water from the first, drain, side to the second, tributary, side, of that wall. The barrier further comprising a pipe traversing the wall for transferring water between the two sides of the wall the pipe being terminated in the first side of the wall at a venturi effect pump, the pump being feedable with water from the drain through a conduit inlet so as to create suction in the pipe for drawing water through the pipe from the second side of the wall to drain water from the second to the first side of the wall.