A structure for restraining debris in a stream, including lateral walls, which delimit between them a flow section in a bed of the stream. This flow section includes an upper portion that includes set between the lateral walls, a structure for retaining material arriving from upstream, and a lower portion that identifies an opening for outflow.

Aquatic curtain devices and methods for forming waterway channels and reducing waterway maintenance are disclosed. Each curtain device comprises an elongated float and an elongated flexible curtain depending from a first side of the elongated float. The curtain has a bottom end with a weight extending along the entire length of the elongated float. The float is configured to be sufficiently buoyant to support the curtain in an upward direction. Each curtain device is configured for the curtain to remain in a substantially taut state when in use and accommodate fluctuations in water levels, such that the elongated weight remains on the bottom of the waterway while the elongated float remains on the surface. Artificial channels are constructed by selecting the length of the elongated float to achieve the desired channel dimensions using two or more curtain devices positioned along a desired path in a waterway.

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.

A fiber block system suitable for check dam applications is described that comprises a central section flanked by two shorter wing sections. Each section comprises a fiber block enclosed in a sleeve of mesh. The fiber block, mesh, and ties can be made of coir fibers.

An intake screen assembly including an intake member, a screen support member, and a screen member coupled to the screen support member. The screen member may be formed from a material, such as copper-nickel, that is different from a material, such as stainless steel, used to form the intake member and/or the screen support member. The intake screen assembly may include corrosion protection members for preventing contact between the components of the screen assembly that are formed from dissimilar materials. The assembly may be formed by coupling the screen support member to the intake member, and coupling the screen member to the screen support member.

An intake screen assembly including an intake member, a screen support member, and a screen member coupled to the screen support member. The screen member may be formed from a material, such as copper-nickel, that is different from a material, such as stainless steel, used to form the intake member and/or the screen support member. The intake screen assembly may include corrosion protection members for preventing contact between the components of the screen assembly that are formed from dissimilar materials. The assembly may be formed by coupling the screen support member to the intake member, and coupling the screen member to the screen support member.

The invention discloses an anti-blocking device for a field channel, a fixed plate which is symmetrical back and forth, and comprises a front and back symmetry fixing plate, the lower end of the fixing plate can be fixed to the two sides of the canal channel of the canal, a transmission box is fixedly connected between the fixed plates on the two sides, a transmission device is arranged in the transmission box, and a cleaning device is arranged on the lower side of the transmission case, the device is simple in structure, a plurality of devices can be arranged on the canal channel, the cleaning efficiency is improved, the device can automatically clean the channel in the canal channel, avoid blockage of the channel after a long time, can collect sundries, and does not need manual cleaning, and the collected sundries are taken out by only human timing.

The invention discloses an anti-blocking device for a field channel, a fixed plate which is symmetrical back and forth, and comprises a front and back symmetry fixing plate, the lower end of the fixing plate can be fixed to the two sides of the canal channel of the canal, a transmission box is fixedly connected between the fixed plates on the two sides, a transmission device is arranged in the transmission box, and a cleaning device is arranged on the lower side of the transmission case, the device is simple in structure, a plurality of devices can be arranged on the canal channel, the cleaning efficiency is improved, the device can automatically clean the channel in the canal channel, avoid blockage of the channel after a long time, can collect sundries, and does not need manual cleaning, and the collected sundries are taken out by only human timing.

A pumping system is provided. The pumping system includes at least one elongated tubing. The elongated tubing includes a first end forming an entrance and a second end forming an exit. A pump discharge tubing is disposed within the elongated tubing and runs from the first end to the second end of the elongated tubing. A pump is coupled to the pump discharge tubing and is operable to pump liquids through the pump discharge tubing. A seal plate is releasably secured to a flange formed at the exit of the elongated tubing. The pump discharge tubing snuggly runs through an opening formed through the seal plate and releasably secures to a manifold.

An environmentally supportive seawater intake system includes a first filtering system in communication with raw seawater for providing a flow of seawater in a first direction into a raceway. A second filtering system is also in communication with seawater in the raceway and is adapted to receive a portion of the seawater in the raceway and directing it in a second direction away from the flow of residual water in the raceway. An input device receives the second portion flowing in the second direction, and a recovery system receives and returns the first, residual portion to the sea environment.