Who will use the boat? Just family or will you invite friends? This may have a bearing on the size. If water is allowed to build up behind the wall, this increases lateral pressure acting on the wall and unless properly considered in the design, this could lead to failure. Weep holes can alleviate this problem by ensuring that water drains from the retained soil. The effectiveness of weep holes can be improved by incorporating a zone of drainage aggregate behind the wall, continuous between weep holes. The advantages of weep holes The Ladies’ Repository (1852) The little hero of Haarlem. Volume 20, Rev. Henry Bacon (ed.). A. Thompkins, Boston, pp 100–101

Once you’ve completed the downspout cut, you then need to drill a hole in the water butt. This hole needs to:

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Weep holes can be formed in a retaining wall during construction very simply and at little cost. The method of forming the weep hole will depend to some extent on the type of retaining wall. Open joint method The deepest blue hole in the world at 300.89 meters (987 feet) deep is in the South China Sea and is named the Dragon Hole, or Longdong. [3] The second deepest blue hole in the world with underwater entrance at 202 metres (663ft) is Dean's Blue Hole, located in a bay west of Clarence Town on Long Island, Bahamas. Other blue holes are about half that depth at around 100–120 metres (330–390ft). The diameter of the top entrance ranges typically from 25–35 metres (82–115ft) (Dean's Blue Hole) to 300 metres (980ft) ( Great Blue Hole in Belize).

Most blue holes are formed through these processes, however, some show no signs of passages or cave systems which are requirements of karst and doline processes. Therefore, these blue holes must have other origins like possibly vertical reef development. [7] Seeger, Pete (1993). Where Have All the Flowers Gone: A Singer's Songs, Stories, Seeds, Robberies. ISBN 9781881322016.

So, before you fit the rainwater diverter, you will need to make two different cuts. The first cut is made to the downspout.

It is believed to be the first seafloor leak of its kind but experts believe that others may exist without detection.Some patch repair kits come with just putty, which is effective but more difficult to get off when you permanently replace the pipe. Keep in mind; you will need to sand this putty down later to make additional repairs. Use the whole roll of tape on the pipe section or tee or elbow joint unless otherwise instructed. Water flowing naturally through the ground can enter the retained soil behind the wall. 3. Fractured pipework Experts believe it may be tectonic fluid leaking into the ocean (Image: UW (University of Washington)) Read More Related Articles Evan Solomon, a University of Washington professor of oceanography and seafloor geology said: “They explored in that direction and what they saw was not just methane bubbles, but water coming out of the seafloor like a firehose. a b Francesca Street (October 8, 2019). "Dispatches from the bottom of Belize's Blue Hole". Cable News Network.