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2. Floodgate - Wikipedia

   en.wikipedia.org/wiki/Floodgate

   Floodgates, also called stop gates, are adjustable gates used to control water flow in flood barriers, reservoir, river, stream, or levee systems. They may be designed to set spillway crest heights in dams , to adjust flow rates in sluices and canals , or they may be designed to stop water flow entirely as part of a levee or storm surge system.

3. Sluice - Wikipedia

   en.wikipedia.org/wiki/Sluice

   A sluice gate. A sluice (/ s l u s / SLOOS) is a water channel containing a sluice gate, a type of lock to manage the water flow and water level. It can also be an open channel which processes material, such as a river sluice used in gold prospecting or fossicking.

4. Roller dam - Wikipedia

   en.wikipedia.org/wiki/Roller_dam

   Roller gates of Mississippi River Lock and Dam No. 15, the largest roller dam in the world. Roller dams are a type of weir, or a dam that is designed to allow water to flow over the top in continuous action. They are used on rivers or other such moving bodies of water where erosion damage is undesirable, yet likely to occur.

5. Gate (hydraulic engineering) - Wikipedia

   en.wikipedia.org/wiki/Gate_(hydraulic_engineering)

   Within the gate valve, there is a gatelike disk that moves up and down perpendicular to the path of flow and seats against two seat faces to shut off flow. The velocity of the fluid against a partly opened disk may cause vibration and chattering which will ultimately lead to damage to the seating surfaces. This is a common way that gate valves ...

6. Spillway - Wikipedia

   en.wikipedia.org/wiki/Spillway

   If inflow to the reservoir exceeds the gate's capacity, an artificial channel called an auxiliary or emergency spillway will convey water. Often, that is intentionally blocked by a fuse plug . If present, the fuse plug is designed to wash out in case of a large flood, greater than the discharge capacity of the spillway gates.

7. Barrage (dam) - Wikipedia

   en.wikipedia.org/wiki/Barrage_(dam)

   A barrage is a type of low-head, diversion dam which consists of a number of large gates that can be opened or closed to control the amount of water passing through. This allows the structure to regulate and stabilize river water elevation upstream for use in irrigation and other systems.

8. Americans are exhausted by political news. TV ratings and a ...

   www.aol.com/americans-exhausted-political-news...

   MSNBC's slide is steeper than it was in 2016; and there's some question about whether Trump opponents will want to be as engaged as they were during his first term.

9. Stoplogs - Wikipedia

   en.wikipedia.org/wiki/Stoplogs

   Smaller stoplogs are sometimes referred to as handstops. Handstops are used in smaller gated structures, such as irrigation delivery ditches or the gates used to control water depth in larger submerged fields (such as rice fields). They are designed to be easily operated by a single individual.