Water Excess Control

Water excess protection and water discharge efficiency

Solutions > Water excess control

​​In open canals management, it is common to face overflows that must be safely discharged, in order to protect the integrity of the installation. The proposed solutions cover both design and operation and maintenance aspects.


Common situations

In open canals, the flow at the end of the analyzed section often exceeds the flow at the start. This may be caused by discharges from other sources, inflow from water sources or rainwater. It may also occur because of operational limitations, such as gate closures or turbines out of service. In reservoirs, once filled, they cannot accept more water. The risk is potential overflows that can cause flooding, damage and other problems.

To effectively manage excess flows, Sharp-crested weirs are commonly used. These weirs play a critical role in maintaining a level and allowing the discharge of excess flows at times of overflow in the canal capacity.



Technical Challenge ​


TEMEC offers innovative solutions by installing equipment that enables drainage to natural watercourses or drainage systems, sometimes to controlled flooding areas, with compact construction works that improve flow discharge, while remaining sensitive to operational changes and being flexible for multiple operating conditions.

The technical challenge is to develop secure and efficient structures without exclusive dependence on local operators. Speed of response to changes in level and flow, resistance to vandalism and weather conditions are essential.

Our technical solutions focus on efficient and sustainable performance in time.

Our Water Excess Control Solutions

Safety, Reliability and Versatility

TEMEC CMXT Autonomous Gate

Guarantee of autonomous discharge in case of overflow, even in adverse weather conditions. Completely autonomous, robust and reliable solution.

It allows modifying the regulated levels by manual or automated set point changes.

View Study Case

Features

These solutions involve small or medium sized civil works, which include one or more gates controlled by floats and ballast weights, designed to simultaneously maintain a minimum level upstream, which if exceeded, activates the gate to open and release the situation upstream of the equipment. The discharge level set upstream can be modified at the operator's request, either manually or by remote control. This situation provides flexibility to the system. The absence of motors and sensors contributes to the robustness and reliability of this equipment.


In situations where the maximum upstream level exceeds a certain range, the gate opens automatically to prevent overflows in the upstream zone, providing total safety to the installation by evacuating the excess water.


► Tips about use

This solution includes equipment inspired by a simple hydraulic design, totally autonomous, robust and free of any mechanical complication, allowing it to adapt to the most severe working conditions.

Features

  •  Guaranteed functionality in severe weather conditions and safety in case of blockages.
  • No electrical power is required for operation.
  • No solids retained at the bottom of the canal.
  • Allows set point changes to adapt to operational changes (remote controllable).
  • Low and simple maintenance.


Tips about use

  • It can be motorized and remote-controlled, with small DC motors and solar panel, simplifying the set point changeover operation.
  • It requires knowing the flow curve of the downstream section to obtain the flow rate.
  • Requires some rubber sealing equipment to achieve complete leak-tightness.

Engineering and Selection

For dimensioning and selection of the appropriate model to include in the solution, as well as for installation instructions and other technical information, we invite you to see our technical brochure and to c ponerse en contact our specialists.


Safety and Reliability

TEMEC CAR1 Autonomous Gate

Guarantee of constant upstream regulation and autonomous opening in case of overflows. Completely autonomous, robust and reliable solution.


This solution does not allow modification of the regulated and maximum discharge levels once defined on the construction site.

View Study Case

Features

These solutions propose small or medium-sized civil works, which include one or more gates controlled by floats and ballast weights, designed to maintain a specific upstream level, whatever the circulating flow or consumption. The gate rises, discharging more flow as the flow increases, with minimal head loss for the maximum flow. The flow discharge is made at the bottom of the canal, collaborating with the cleaning of the civil works. In the event of flow changes, caused by higher or lower consumption downstream, this equipment opens or closes in order to keep the upstream level constant, with an immediate and autonomous response. The absence of motors and sensors contributes to the robustness and reliability of this equipment.


This solution does not allow set point changes on the regulated level in case the customer requires it, because it is a set parameter after the civil work is defined.


► Tips about use

This solution includes equipment inspired by a simple hydraulic design, totally autonomous, robust and free of any mechanical complication, allowing it to adapt to the most severe working conditions.

Features

  • Guarantee of constant upstream level.
  • Autonomous opening safety.
  • Low associated head loss.
  • Guaranteed functionality in severe weather conditions.
  • Guarantee of constant upstream level.
  • No electrical power is required for operation.
  • No solids retained at the bottom of the canal.
  • Low and simple maintenance.


Tips about use

  • It does not open until it ensures the operating level.
  • To know the through flow, it must be installed in association with another device or hydraulic solution that allows the measurement.
  • Requires some rubber sealing equipment to achieve complete leak-tightness.

Engineering and Selection

For dimensioning and selection of the appropriate model to include in the solution, as well as for installation instructions and other technical information, we invite you to see our technical brochure and to c ponerse en contact our specialists.




Overflow Security

Autonomous Safety with Siphons

Guarantee of progressive, safe and autonomous discharge of excess water in canals. Requires compact civil works. Completely autonomous, robust and reliable solution.


This solution does not allow modification of the discharge levels once defined on the construction site.

View Study Case

Features

These solutions consider small civil works in selected locations along the canal, allowing the overflow discharge to a riverbed or a specially prepared site for temporary controlled flooding. In these installations, the siphons play an effective role by gradually evacuating the excess flow over a specific level, without pulsation. Compared to weir spillways, siphons have a significant advantage in requiring forty to fifty times less length to obtain the same level elevation and the same evacuated flow.


This evacuation method, characterized by its progressive discharge, is highly efficient in the management of excess flows. The ability of the siphons to maintain a continuous flow without generating pulses makes them an outstanding option compared to conventional spillways.

In addition, the significant reduction in length required to implement siphons results in practical and spatial benefits, making them a compact and efficient solution for controlled flow management in a multitude hydraulic applications.

The absence of moving parts, motors or sensors contributes to the robustness and reliability of this equipment.


►  Tips about use

This solution includes equipment inspired by a simple hydraulic design, totally autonomous, robust and free of any mechanical complication, allowing it to adapt to the most severe working conditions.

Features

  • Adaptability to different civil works.
  • Gradual and progressive evacuation of excess flows.
  • Continuous flow evacuation without pulse generation.
  • Space Efficiency (compared to traditional weirs)
  • Guaranteed functionality in severe weather conditions.
  • No solids retained at the bottom of the canal.
  • Low and simple maintenance.


Tips about use

  • Does not allow changes in discharge level.


Engineering and Selection

For dimensioning and selection of the appropriate model to include in the solution, as well as for installation instructions and other technical information, we invite you to see our technical brochure and to c ponerse en contact our specialists.