A method of removing sediment from fluid flow within a storm water drain pit by deflecting flow entering the pit towards the side walls of the pit by one or more deflectors. This reduces the energy of the fluid flow and promotes settling of sediment within the catch pit. Each deflector is preferably of a concave form and may be located in a storm water drain pit bag or suspended. A removable catch basin receptacle for a storm water drain pit includes a container has a low flow outlet defining a fluid path for fluid at a first level within the container to a second level, higher than the first level, outside the container. An overflow path provides a fluid flow path out of the container at a level higher than the first or second level.

A reservoir withdrawal system is disclosed comprising a selectively-adjustable water intake positioned within a reservoir. The water intake is adapted to withdraw water from the reservoir at a desired depth using a telescoping conduit. A water transport system is in fluid communication with the water intake and with a water discharge. A controller allows an operator to selectively adjust the desired depth of the water intake.

A reservoir withdrawal system is disclosed comprising a selectively-adjustable water intake positioned within a reservoir. The water intake is adapted to withdraw water from the reservoir at a desired depth using a telescoping conduit. A water transport system is in fluid communication with the water intake and with a water discharge. A controller allows an operator to selectively adjust the desired depth of the water intake.

Stormwater management systems, methods, and apparatuses for containing and filtering runoff may be provided. In one implementation, a flared end ramp for managing flow of material into a stormwater chamber may be provided. The flared end ramp may include an inlet end configured for connection with a pipe, a side wall of the flared end ramp having a rounded profile at the inlet end; an outlet end configured for placement within the stormwater chamber; and an inclined surface extending between the inlet end and the outlet end of the flared end ramp and configured to deliver material from the pipe into the stormwater chamber. The outlet end of the flared end ramp may have a larger width than the inlet end of the flared end ramp such that the inclined surface is angled laterally outward from the inlet end toward the outlet end.

A pump station for intermediate storage of liquid includes a tank configured to house the liquid, an inlet for influent liquid flow, a pump configured to intermittently discharge liquid from the tank, an outlet for effluent liquid flow, and a flush pipe having a lower opening provided in the tank and an upper opening. The lower opening of the flush pipe is located below a pump start liquid level of the tank, and the flush pipe includes a valve configured to open/close fluid communication between the lower opening of the flush pipe and the upper opening of the flush pipe. The valve is located above the pump start liquid level of the tank. The flush pipe is configured to alternate between a primed state and a released state.

A system, methodology, and programming logic for active stormwater controls to optimize sizing and design of Hydromodification Management (HM) structural Best Management Practices (BMPs) to achieve optimal flow duration control. Control logic enables the controlled release of stormwater from a BMP in a manner most akin to pre-development flow duration curves. Inputs to this logic include: flow duration curves based on continuous hydrologic simulation for pre- and post-development conditions; real-time measurement of water level within the BMP; and real-time measurement of discharge entering the BMP. This control logic can interact with control logic for other stormwater management objectives, such as harvest and reuse, infiltration, and combined sewer overflow prevention, and respective inputs, such as real-time weather forecast data, precipitation gage data, downstream flow gauge data, and water quality data, to meet those design objectives as well. New HM BMPs can be optimized to be smaller and, thus, more feasible to implement. Existing stormwater facilities designed for flood control or other management objectives can be retrofitted to provide hydromodification control as well. When utilized with real-time flow and water level monitoring equipment and data, the flow release logic can be adaptively adjusted without physical retrofit of the BMP's outlet.

A water detention system for detaining storm water having a side wall and a bottom floor; an inlet conduit for ingress of storm water; and a water discharging assembly, which includes a siphon, configured to pass storm water there through; and an outlet conduit for egress of storm water from the water discharging assembly. The inlet and outlet conduits are disposed through the side wall of the water detention system. A water discharging assembly for discharging storm water from a water detention system includes an outer enclosure; a first opening in the outer enclosure for ingress of water; a second opening in the outer enclosure for egress of water; and a siphon disposed within the outer enclosure; where, except of the first opening and the second opening, the outer enclosure is substantially fluid tight.

A water storage and filtering system for capturing pollutants from pollution borne storm water. The water storage and filtering system comprises a subsurface basin, at least one tire bundle made from a plurality of substantially whole tires secured sidewall to sidewall, and a filler which substantially fills the unoccupied volume of the subsurface basin. Pollutants in the storm water are captured as sediment in the subsurface basin as a result of the filtration and storage effects of the combination of the filler and tire bundles. The subsurface basin is covered by a water-permeable structure and multiple hollow vertical support columns may be included to support the expected load on the top of the basin.

Systems, devices, and methods for providing nutrient removals in an up flow filtration storm water system for treating water to very high clean levels using filtration media. A filtration media can be supported by a screen above a floor in a vault allows for incoming storm water to pass into a void space above the floor into the screen and filtration media and then out an outlet to the vault. The filtration media can include recyclable and/or natural particles. Layers of river rocks can be placed on top of and below the filtration media. The captured debris can drop to the floor. The long lasting filtration media can be cleaned by being backwashed.

A liquid treatment system is provided having a vault that contains a treatment chamber and an outflow chamber. The treatment chamber may have a filtration media layer containing media that treats liquid as it descends through the filtration media layer, where it will accumulate in a porous layer or open space. The liquid will then be directed through the plurality of pipes to the outflow chamber, where the treated liquid is further directed to outside the system. Accumulated debris settled at the bottom of the treatment chamber may be flushed out by a spray bar.