A control plate is provided at a preferred position in a storm overflow chamber. An inflow pipe, an intercepting pipe, and an outflow pipe are connected to the storm overflow chamber. A vortex flow type water surface control device for a draining device includes the overflow chamber, and a control plate arranged in front of an opening portion of the intercepting pipe opening to the storm overflow chamber. A relation (1) 0.5 D≦X≦0.7 D and 0.83 D≦Y≦1.5 D holds true, or a relation (2) 0.4 D≦X≦0.5 D and 1.0 D≦Y≦1.5 D holds true, where D represents an inner diameter of the opening portion, X represents a projection length of the control plate with respect to the opening portion, and Y represents a distance between the control plate and the opening portion. As a result, contaminants enter the intercepting pipe.

A combined sewer/enclosure overflow (CSO) sensor system is described for accurate detection and measurement of overflow events. From the combined data, trending information can determine if there is debris accumulation. Rain masks can be used in the trending data to measure overall health. External sensors in combination with the CSO sensors provide predictive information and additional levels of information/data accuracy. The sensor system automatically and remotely monitors CSO locations and provides real-time data regarding start times, stop times, duration, and flow volumes of overflows that occur in these structures and provide regulatory and public notification of these events.

A pop-up emitter includes a conduit, a cover plate, a pop-up lid, and a clip. The conduit defines a flow channel configured to establish fluid communication with a drainage system. The cover plate protrudes radially outward from a top end of the conduit and about the flow channel. The cover plate defines a slot along a top surface of the cover plate. The pop-up lid has a horizontally extending pin protruding outward therefrom. The pin is disposed within the slot. The pop-up lid is configured to pivot about the pin to transition between a first position where the plate covers the flow channel along the top end and a second position where the flow channel is exposed such that water is emitted therefrom. The clip is disposed within the slot and engages the pin such that the clip retains the pin within the slot.

The present invention relates to a venturi device for a combined sewage overflow system, the venturi device comprising: a body defining a fluid passageway therethrough, the body having a first end portion defining a fluid inlet; a second end portion opposing the first end portion, the second end portion defining a fluid outlet and an opposing venturi inlet in fluid communication with the fluid outlet: and a mid-portion located between the first and second end portions; and a venturi pipe located between the first fluid outlet and the venturi inlet and in fluid communication with both, wherein the venturi pipe is narrower in cross section than the venturi inlet, and wherein the fluid inlet comprises an intake funnel that decreases in width in a direction towards the fluid passageway. The present invention further provides a CSO system including such a venturi device.

A combined sewer/enclosure overflow (CSO) sensor system is described for accurate detection and measurement of overflow events. From the combined data, trending information can determine if there is debris accumulation. Rain masks can be used in the trending data to measure overall health. External sensors in combination with the CSO sensors provide predictive information and additional levels of information/data accuracy. The sensor system automatically and remotely monitors CSO locations and provides real-time data regarding start times, stop times, duration, and flow volumes of overflows that occur in these structures and provide regulatory and public notification of these events.

A combined sewer/enclosure overflow (CSO) sensor system is described for accurate detection and measurement of overflow events. From the combined data, trending information can determine if there is debris accumulation. Rain masks can be used in the trending data to measure overall health. External sensors in combination with the CSO sensors provide predictive information and additional levels of information/data accuracy. The sensor system automatically and remotely monitors CSO locations and provides real-time data regarding start times, stop times, duration, and flow volumes of overflows that occur in these structures and provide regulatory and public notification of these events.

Utilizing debris basins for stormwater retention.

Utilizing debris basins for stormwater retention.

A combined sewer/enclosure overflow (CSO) sensor system is described for accurate detection and measurement of overflow events. From the combined data, trending information can determine if there is debris accumulation. Rain masks can be used in the trending data to measure overall health. External sensors in combination with the CSO sensors provide predictive information and additional levels of information/data accuracy. The sensor system automatically and remotely monitors CSO locations and provides real-time data regarding start times, stop times, duration, and flow volumes of overflows that occur in these structures and provide regulatory and public notification of these events.

A combined sewer/enclosure overflow (CSO) sensor system is described for accurate detection and measurement of overflow events. From the combined data, trending information can determine if there is debris accumulation. Rain masks can be used in the trending data to measure overall health. External sensors in combination with the CSO sensors provide predictive information and additional levels of information/data accuracy. The sensor system automatically and remotely monitors CSO locations and provides real-time data regarding start times, stop times, duration, and flow volumes of overflows that occur in these structures and provide regulatory and public notification of these events.