A transportable wave suppressor and sediment collection (WSSC) system positionable in deep water along a coastline of a body of water, having a plurality of sections, each section further including a base portion having an upper floor portion, a forward wall, rear wall and two sidewalls and an open bottom end portion for being positioned on a floor of the body of water; at least a pair of raised elongated members positioned on the upper surface of the upper floor of the base; an upper portion to be secured to the base portion, the upper section having a angulated front wall to receive the flow of water through a plurality of flow pipes as the water engages each section; at least a pair of elongated openings in the upper portion for receiving the raised elongated members positioned on the upper surface of the upper wall of the base to define a means for securing the base to the upper portion. There is further provided a one way valving element positioned on the rear end of each flow pipe, for allowing water containing sediments to exit the pipe at the rear wall, but preventing the water and sediments from returning through the flow pipe; and a spacer portion to be positioned intermediate the base portion and upper portion, the spacer portion including a plurality of flow pipes to allow water carrying sediment to the rear of the section.

A double filtration sediment control device to improve sediment removal from stormwater. A sheet of filtering geotextile is sewn to form a sleeve and a leading flap. An elongated flat, flexible frame is bent longitudinally to form an arch that is inserted into the geotextile sleeve. After insertion, the frame expands against the sleeve to support the sleeve in an arched orientation with an uphill leg and a downhill leg. The outside of the uphill leg is a first filtering surface, and the inside of the downhill leg is a second filtering surface. The flap is covered with soil to direct water through the device, and the device is anchored with sod staples driven through the flap. The frame provides a height and functional rigidity to the assembly. The second filtering surface may be a finer filter than the first filtering surface.

A device comprising a corkscrew; a substantially flexible shaft operably attached to the corkscrew at a first end of the shaft; and one or more protrusions extending from the shaft between the first end of the shaft and a second end of the shaft. Methods of using the device are also disclosed.

A composite silt fence configured for capturing pollutants in one embodiment comprises a silt fence fabric including i) a polymeric geotextile fabric particulate filtering layer defining the hydraulic flow capacity for the silt fence, ii) a pollutant capturing layer coupled to the polymeric geotextile fabric particulate filtering layer and configured to capture some select pollutants in water from flow that has passed through the polymeric geotextile fabric particulate filtering layer, and iii) a backing layer coupled to the pollutant capturing layer; and a plurality of stakes secured to the silt fence fabric at spaced locations. The silt fence fabric yields higher hydraulic flow than existing fence constructions with greater sediment retention and pollutant containment features.

A method and system for determining a limit scouring state of riverbed in downstream river channel of a reservoir group are provided. The method includes: collecting discharge data and cross-sectional prototype observation data of the downstream river channel of the reservoir group; establishing a correlation between discharge and a sediment carrying capacity indicator of a cross-section of a controlled hydrological station; calculating variation of the sediment carrying capacity indicator corresponding to dominant discharge; and determining and verifying the limit scouring state of the riverbed in the downstream river channel of the reservoir group. The method determines the limit scouring state of the riverbed in the river channel, and verifies the preliminary screening results based on the cross-section changes with the above determination, so as to provide technical support for mastering the development process of riverbed scouring and scouring trend prediction in the dam downstream river channel of the reservoir group.

Disclosed is a method for regulating confluence of tributaries with a large drop difference and a large angle into a trunk canal. The method includes: banking up a reservoir at an upstream end of a tributary river, and widening a water surface, such that uniform distribution of water flows is completed; then conducting scouring and energy dissipation to reduce a flow velocity and kinetic energy of the water flows; then conducting flow-slowing sedimentation, such that sediment is deposited on one side of the tributary river connected to a downstream side of a trunk stream; and then conducting flow diversion at one side of the tributary river connected to an upstream side of the trunk stream, such that an included angle of confluence of tributary river water into the trunk stream is reduced.

An automated rainfall flocculant disbursement tower for sediment and erosion control, including a structure to support a waterproof hopper and a rainfall collector to collect rainfall prior to its entry into a collection facility. A sensor array detects the presence of the rainwater in the rainfall collector and emits an output signal to initiate the operation of a disbursement wheel/mechanism powered by a distribution motor to disperse a flocculant into the rainwater runoff. A cartridge is provided including a housing to contain operational components of a flocculant emission system which stores and disperses the flocculant such that the flocculant is emitted from the internal cartridge and dosing sleeve via the operation of the distribution motor and wheel/mechanism.

An erosion prevention and sedimentation control flow-regulation device and system is provided for all customary applications addressed by conventional filtration devices such as check-dams (ditch check, channel or culvert), inlets (curb and ground), slope (hillside), perimeter control and settling and other ponds. The flow-regulation device and system is comprised of two components: (1) a heavy, irregular-shaped, hard-wearing, non-filtering, high-porosity fill media encapsulated in a heavy-duty, high-tensile mesh (the high-porosity particle mix component), and (2) an optional sheet-like synthetic geotextile material with limited permeability (the low-permeability choker component). The high-porosity particle mix component allows much larger flows of water through the device and system. The low-permeability choker component constricts or chokes the flow of water into the high-porosity particle mix component. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Disclosed is a method for regulating confluence of tributaries with a large drop difference and a large angle into a trunk canal. The method includes: banking up a reservoir at an upstream end of a tributary river, and widening a water surface, such that uniform distribution of water flows is completed; then conducting scouring and energy dissipation to reduce a flow velocity and kinetic energy of the water flows; then conducting flow-slowing sedimentation, such that sediment is deposited on one side of the tributary river connected to a downstream side of a trunk stream; and then conducting flow diversion at one side of the tributary river connected to an upstream side of the trunk stream, such that an included angle of confluence of tributary river water into the trunk stream is reduced.