Abstract: Surface water, such as stormwater, is contained in a pond, or other containment having primary semi-isolated treatment areas constructed, or designated therein, which are suitable for establishing ecological communities for treatment of water within the containment. Water for treatment is induced to flow through the semi-isolated areas and the ecological communities therein for treating the water, such as by bio-filtering, breakdown and bioremediation of water-soluble or hydrocarbon-based contaminants and inhibition of the proliferation of waterborne pathogens. The treated water is then discharged from the semi-isolated areas, such as for use downstream. Discharge of the treated water from the primary semi-isolated treatment areas, as well as the use of pump systems, induces the flow of water through the semi-isolated areas and ecological communities therein to effect the treatment.

Abstract: Surface water, such as stormwater, is contained in a pond, or other containment having primary semi-isolated treatment areas constructed, or designated therein, which are suitable for establishing ecological communities for treatment of water within the containment. Water for treatment is induced to flow through the semi-isolated areas and the ecological communities therein for treating the water, such as by bio-filtering, breakdown and bioremediation of water-soluble or hydrocarbon-based contaminants and inhibition of the proliferation of waterborne pathogens. The treated water is then discharged from the semi-isolated areas, such as for use downstream. Discharge of the treated water from the primary semi-isolated treatment areas, as well as the use of pump systems, induces the flow of water through the semi-isolated areas and ecological communities therein to effect the treatment.

Abstract: Stormponds provide a secondary source of non-potable water within a community that can be treated within the community to remove contaminants, rather than at a regional water treatment plant which provides a primary potable water supply to the community. The treated stormwater provides a secondary supply of potable water to assist in meeting the potable water demand of the community. To address issues of public trust in the potable water supply, the secondary potable water supply is tested and compared to test data from the primary potable water to direct further treatment of the secondary potable water to address secondary considerations therein, such as a taste-profile, an odor-profile, a hardness of the water, pH and reactivity. The secondary potable water is treated accordingly to adjust the secondary considerations to be substantially the same as the primary potable water.

Abstract: Remediation materials are stored and treated within remediation cells constructed within a pond. The remediation materials originate from a variety of sources including the pond in which the remediation cells are constructed. The volume of the remediation cells is relatively small compared to the total volume of the pond and thus, the total active volume of the pond to handle stormwater flood events is not significantly diminished. Remediation of the remediation materials in the cells is accomplished through a variety of processes, including dewatering and/or by bioremediation therein. The water level in the remediation cells during normal operation outside flood events is maintained at levels which support the remediation processes. When the remediation cells are filled over time, remediated material can be removed for use in constructing other remediation cells, wetlands or marshes in the same or other ponds or can be located to areas remote from the pond.

Abstract: Embodiments deliver sediment-containing inflow to a pond through a low flow inlet, or through the low flow inlet and a high flow inlet. A hydraulic control system uses a flow directing element, such as a basin, manhole or the like, to collect the inflow and a spill control element, such as a weir or a high elevation point within a pipe or channel, to determine when the inflow is delivered entirely through the low flow inlet or is split between the low flow inlet and the high flow inlet. Flow through the low flow inlet is maintained at a minimum sediment-mobilizing velocity to ensure sediment is discharged from the inlet to the pond. The inflow is discharged from the low flow inlet and the high flow inlet at different locations in the pond.

Abstract: Remediation materials are stored and treated within remediation cells constructed within a pond. The remediation materials originate from a variety of sources including the pond in which the remediation cells are constructed. The volume of the remediation cells is relatively small compared to the total volume of the pond and thus, the total active volume of the pond to handle stormwater flood events is not significantly diminished. Remediation of the remediation materials in the cells is accomplished through a variety of processes, including dewatering and/or by bioremediation therein. The water level in the remediation cells during normal operation outside flood events is maintained at levels which support the remediation processes. When the remediation cells are filled over time, remediated material can be removed for use in constructing other remediation cells, wetlands or marshes in the same or other ponds or can be located to areas remote from the pond.

Abstract: Apparatus for extended-reach remediation of a pond by removal of pumpable materials such as deposited sediment has a base and a rotatable multi-articulated boom to which a pump is connected at the distal end. The boom has a reach which exceeds the reach of conventional remediation apparatus and may be as long as 50 m or greater for reaching over obstacles between the base and the pond. The base can be stationary or it can be mobile or self-propelled for repositioning the apparatus about the perimeter of the water body or to platforms which are built within the pond and accessible by accessways when the pond is filled with water. The pump is lightweight so as not to affect the overall apparatus stability when the boom is fully extended. Geo-locating apparatus assists with mapping the remediation operation.

Abstract: A pond receives a flow of contaminated water into the pond substantially tangential to a volume of clarified water which is stored in the pond and which is largely quiescent. The tangential inflow overcomes a large rotational inertia in the stored volume of clarified water and establishes a slow spiral flow path about the periphery of the pond and inwards to a central outlet. The clarified stored water is discharged ahead of the inflowing contaminated water increasing the residence time of the contaminated water in the pond and permitting contaminants to receive at least partial treatment, such as settling of sediment, in the pond.

Abstract: A pond receives a flow of contaminated water into the pond substantially tangential to a volume of clarified water which is stored in the pond and which is largely quiescent. The tangential inflow overcomes a large rotational inertia in the stored volume of clarified water and establishes a slow spiral flow path about the periphery of the pond and inwards to a central outlet. The clarified stored water is discharged ahead of the inflowing contaminated water increasing the residence time of the contaminated water in the pond and permitting contaminants to receive at least partial treatment, such as settling of sediment, in the pond.