A compressible liquid retaining berm having a plurality of linear wall members and right angle corner members composed of a compressible, resilient material such that the wall members and corner members will rebound to a neutral state after being compressed. A longitudinal slot is disposed in the top wall of the wall members and the corner members, with the corner member longitudinal slots communicating with a recess positioned in the corner member. A liquid impermeable liner member is disposed on the interior side of the wall members and corner members, the liner member extending across the wall members and corner members. The liner member is secured to the wall members and corner members by positioning elongated anchor members atop the liner member in alignment with the longitudinal slots, such that the weight of the anchor members results in the anchor members being received within the longitudinal slots.

A portable, water-filled barrier system includes a plurality of water-fillable modules, each module being internally divided into cells that emulates a section of a sandbag dike or wall. Adjacent modules are interconnected by fastening mechanisms, such as loops attached to fronts or sides of the modules and connected by straps or clamps. Automatic valves can seal openings between the filled cells, so that a punctured cell will not cause cells below and behind to deflate. In embodiments, the barrier can be initially filled with air, positioned, and then filled with water while the air escapes through a pressure valve. A manifold can be used to simultaneously fill a plurality of cells. A flexible sheet can be installed beneath and in front of the assembled barrier so as to inhibit leakage of water under or between the cells.

The present invention relates to inflatable bladder actuated water control gates for control of open channels such as rivers and canals and for control of dam spillways without the need for intermediate piers. The air bladder and hinge flap wedge clamping system includes hinged engagement of the upstream edge of the clamps to the foundation so as to prevent the application of bending and shear loads to the anchor bolts. The resulting configuration facilitates the use of high strength alloy steel anchor bolts in a corrosion protected environment and also prevents tensile loading of the concrete foundation and associated cracking of the concrete foundation.

A cabled, non-inflatable type flexible wall dam for restraining or controlling the flow of water is disclosed. The cables and flexible wall of present invention are arranged in a manner that enables present flexible wall dams to open (lower) and close (raise) for controlling the flow of water. Present invention includes a reinforcement method that has a net like reinforcement layer and reinforcement cables, and therefore the dams of present invention can be built to be stronger, larger, and higher than the most commonly used inflatable flexible wall dams.

The present invention relates to inflatable bladder actuated water control gates for control of open channels such as rivers and canals and for control of dam spillways without the need for intermediate piers. The air bladder and hinge flap wedge clamping system includes hinged engagement of the upstream edge of the clamps to the foundation so as to prevent the application of bending and shear loads to the anchor bolts. The resulting configuration facilitates the use of high strength alloy steel anchor bolts in a corrosion protected environment and also prevents tensile loading of the concrete foundation and associated cracking of the concrete foundation.

The invention relates to improved water control gates and related inflatable actuators, and associated sealing, manufacture and operation apparatus and methods. Advancements in technologies related to air fitting design, inflated bladder stress relief, inflatable bladder strength enhancement, water gate related slide friction mitigation, abutment and other impounded water seals, gate panel fabrication, traffic accommodating water impoundment structures, and water gate panel system operation efficiency, as well as nappe aeration, hinges, and bladder manufacture technology are disclosed herein.

To make it possible to raise a door body even if it is damaged by an impact of vehicle traffic or falling objects when it is in a lowered state, and to keep the door body in a raised state even if it is damaged by a water pressure of a tsunami or a high tide when it is in a raised state. A door body 2 of a floating flap gate 1 is disposed at an opening or at an access way. When water flows in, a forward end 2b of which swings upwards, in a direction in which the water flows in and within a plane in a height direction, around a base end 2a thereof which serves as a center of rotation, to block the opening or the access way. The door body 2 is formed from a hard polyurethane foam 4 in the form of a sheet.

An apparatus for creating a surfing wave in a body of water. An apparatus for the purpose of efficiently producing a variety of surfing waves having a repetition rate and size suitable for surfing. The waves are generated using a controlled up and down motion of mechanical plungers in a way that allows the control of the shape and therefore surf characteristics of the wave. A linear array of plungers is used so that they interact in different ways with bathometry of the body of water and can be changed to further alter the surfing characteristics of the waves. The motion of the individual plungers can be adjusted so that effects of different wave travel distance to the bathometry can be compensated for consistent wave characteristics.

A system and method for constructing any desired length of height linear cellular chain for use as a protective wall system, including a chain of fabric bulk bags, each having an open upper end, and interconnected along their sidewalls to define the cellular chain; and a fabric channel formed on the upper ends of each of the adjoining bags sidewalls for engaging a bag support and filling system, which includes a first metal frame member having a pair of arm members for threading through two adjacent fabric channels; the frame supported by a base member resting on the ground; a second metal frame member for receiving the distal ends of each of the arm members of the first metal frame member, at a level so that the bulk bag is supported by the arm members; bulk material to be poured into the supported bulk bag, to a level that the bag is substantially filled and no longer requires the support of the frame, so that the frame can be removed and positioned onto the next pair of fabric channels to fill the next empty bag.

A water containment structure that includes at least one flexible sleeve formed from a strong flexible material that will resist puncturing and is formed to contain at least one bladder formed to retain water, and which said sleeve includes center notches formed in the opposite sleeve ends that separate like closed end parallel fingers, which bladder fills the sleeve to the sleeve finger ends so that the bladder ends fit into and against the finger ends, and at least one water fill and drain tube fitted through said sleeve intro said bladder to pass, respectively, water into, and drain water from which bladder, and said bladder includes an air drain to provide for evacuating air from the sleeve during bladder filling. Which sleeve finger ends can be fastened together around a support, and which sleeve finger ends and notches can be secured to one another for connecting a number of sleeves, end to end, into a water containing structure.