Disclosed is a protective barrier segment for a temporary liquid-damming protective barrier configured for separating a flooded side from a protected side by abutting against a ground surface, the protective barrier segment including a liquid-damming member having a first surface facing the flooded side and a second surface facing the protected side. The protective barrier segment is characterized in that the liquid-damming member includes an opening connecting the flooded side and the protected side and in that the protective barrier segment further includes a pump arrangement, wherein the pump arrangement is located at the opening in sealed engagement with the liquid-damming member and wherein the pump arrangement, in use, pumps liquid from the protected side to the flooded side. Also disclosed is a protective barrier including such a protective barrier segment.

Disclosed is a protective barrier segment for a temporary liquid-damming protective barrier configured for separating a flooded side from a protected side by abutting against a ground surface, the protective barrier segment including a liquid-damming member having a first surface facing the flooded side and a second surface facing the protected side. The protective barrier segment is characterized in that the liquid-damming member includes an opening connecting the flooded side and the protected side and in that the protective barrier segment further includes a pump arrangement, wherein the pump arrangement is located at the opening in sealed engagement with the liquid-damming member and wherein the pump arrangement, in use, pumps liquid from the protected side to the flooded side. Also disclosed is a protective barrier including such a protective barrier segment.

A folding hanger includes a hook extending from an upper end of a hinge pin for suspending the pin. First and second hanger arms each have proximal and distal ends and define a support surface therebetween. Each proximal end has a stop. A knuckle having a hole extends from each proximal end. The pin passes through the holes along an axis, coupling the arms and hook whereby the arms are movable between extended and folded configurations. The stops abut when the arms are extended, and are separated when folded. The hanger has a center of gravity when the arms are extended and suspended by the hook such that the axis is angled relative to vertical in a first direction and the stops bias abutting. The arms each have a center of gravity such that angular movement of the axis past an unstable equilibrium causes the arms to move toward folded.

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.

Disclosed is a protective barrier segment for a temporary liquid-damming protective barrier configured for separating a flooded side from a protected side by abutting against a ground surface, the protective barrier segment including a liquid-damming member having a first surface facing the flooded side and a second surface facing the protected side. The protective barrier segment is characterized in that the liquid-damming member includes an opening connecting the flooded side and the protected side and in that the protective barrier segment further includes a pump arrangement, wherein the pump arrangement is located at the opening in sealed engagement with the liquid-damming member and wherein the pump arrangement, in use, pumps liquid from the protected side to the flooded side. Also disclosed is a protective barrier including such a protective barrier segment.

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.

In order to achieve a swing motion type retractable floodgate using a cost-effective torsion structure, the present invention is provided with a swing pivot support mechanism, a friction shoe, a door bottom support seat, and an operation step during a tidal flow. The support mechanism allows free rotation about three axes and restricts motion in the three axis directions, and a pulling force acts on the support mechanism. The friction shoe dissipates tidal energy during closing operations in a tidal flow to a level that prevents damage to the door. Reactive forces are endured by reducing impact forces with the flexibility and strength of the door bottom support seat. Suitable tidal energy dissipation is performed by selecting friction force strength in the operation step.

A flap gate includes a door body and a flap ancillary part. When the door body is in its down position, a movable end portion of the door body is located forward of a supported end portion. The door body changes its position between the down position and a maximum up position. The flap ancillary part applies tilt-up moment to the door body only when the door body is located in a position between the down position and a first position. The flap ancillary part also applies tilt-down moment to the door body only when the door body is located in a position between the maximum up position and a second position.

An integrated system comprising a barrier, such as a weir with movable gates, controllably blocks water flow in a natural or concrete lined channel. Without substantially impeding flow in normal conditions, the barrier is configured to back up flood waters to spill into an upstream prepared detention basin. Water is thus kept from downstream areas until subsequently drained through a controlled spill. Multiple units installed in a watershed can store significant amounts of flood water, e.g., during a hurricane, protecting life and property downstream.

The electromechanically-operated gates can be operated locally or from a remote control center. Gauges and sensors positioned near the weir and/or throughout the watershed can provide data used to control one or more barriers in the watershed, and the data may be used to train a machine learning model to control the system.