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2. External floating roof tank - Wikipedia

   en.wikipedia.org/wiki/External_floating_roof_tank

   Water on the roof is usually drained by a special flexible hose or other special drain line system that runs from drain-sumps on the roof, through the stored liquid to a drain valve on the shell at the base of the tank. A hose is the shortest quickest route, Other drain systems are available both rigid and semi-rigid.

3. Expansion tank - Wikipedia

   en.wikipedia.org/wiki/Expansion_tank

   An expansion tank or expansion vessel is a small tank used to protect closed water heating systems and domestic hot water systems from excessive pressure. The tank is partially filled with air, whose compressibility cushions shock caused by water hammer [ citation needed ] and absorbs excess water pressure caused by thermal expansion .

4. Open and closed lakes - Wikipedia

   en.wikipedia.org/wiki/Open_and_closed_lakes

   An open lake is a lake where water constantly flows out under almost all climatic circumstances. Because water does not remain in an open lake for any length of time, dissolved solids do not accumulate, and such lakes are usually fresh water. Open lakes form in areas where precipitation is greater than evaporation. Because most of the world's ...

5. Storm drain - Wikipedia

   en.wikipedia.org/wiki/Storm_drain

   Storm drain grate on a street in Warsaw, Poland Storm drain with its pipe visible beneath it due to construction work. A storm drain, storm sewer (United Kingdom, U.S. and Canada), highway drain, [1] surface water drain/sewer (United Kingdom), or stormwater drain (Australia and New Zealand) is infrastructure designed to drain excess rain and ground water from impervious surfaces such as paved ...

6. Sedimentation (water treatment) - Wikipedia

   en.wikipedia.org/wiki/Sedimentation_(water...

   The overflow rate is defined as: [citation needed] Overflow rate (v o) = Flow of water (Q (m 3 /s)) /(Surface area of settling basin (A(m 2)) In many countries this value is named as surface loading in m 3 /h per m 2. Overflow rate is often used for flow over an edge (for example a weir) in the unit m 3 /h per m.

7. Draining and development of the Everglades - Wikipedia

   en.wikipedia.org/wiki/Draining_and_development...

   Levee 29 featured four flood control gates that controlled all the water entering Everglades National Park; before construction, water flowed in through open drain pipes. The period from 1962 to 1965 was one of drought for the Everglades, and Levee 29 remained closed to allow the Biscayne Aquifer —the fresh water source for South Florida—to ...