Homework Sourseplense briefly use o60 ord Cal 2 or round water re charge pr
Solution
(1)
(2)
The Groundwater Replenishment System (GWRS)
OCWD operates groundwater recharge facilities in the Cities of Anaheim and Orange. A 30-year lease agreement was approved in January 2013 to allow the district to construct an injection water well and well facilities at the Anaheim Regional Transportation Intermodal Center.OCWD is governed by a ten-member Board of Directors, seven are publicly elected and three are appointed by their respective City Councils. These ten officials are responsible for the District\'s policies and decision making.
(3)
Shade balls are small plastic spheres floated on top of a reservoir for environmental protection and to slow evaporation. Also known as bird balls, they were developed initially to prevent birds from landing on toxic tailing ponds produced by mining operations. They have been used by airports to prevent birds from being attracted to drainage ponds and thus risking collisions with planes
The shade balls used in the Los Angeles project are made of high-density polyethylene (HDPE) with carbon black additive to protect the plastic from ultraviolet radiation. Adding carbon black also prevents the formation of bromate, which causes stomach problems when water contaminated with it is consumed.
They are about 4 inches (10 cm) in diameter, and partially filled with water to avoid being blown by wind. HDPE plastic is commonly used for food and beverage containers as well as water distribution pipes.
| SNO | OPEN CHANNEL FLOW | PIPE FLOW |
| 1 | flow occurs due to gravity | flow occurs due to difference in pressure |
| 2 | the maximum velocity occurs at a little distance below water surface | the maximum velocity occurs at center of pipe |
| 3 | HGL(hydraulic gradient line) coincide with water surface line | HGL(hydraulic gradient line) do not coincide top surface of water |
