Semaphore beach

[gdt]

Since this blog is named "Postcards from Semaphore" and I notice The Australian is critical of the lack of paid lifesavers at the beach I should give people some background.

Semaphore Beach is about 2Km long, curving in a large S. The Surf Lifesaving Club is to the south, the Semaphore Jetty is to the north. The beach continues on to the south and north in the same fashion, merely changing name to Tennyson and Largs. The shape of the beach means that one end of the beach is not visible from the other end.

Inland there are sand dunes and beyond those are plentiful grassed areas where people have BBQs, play games and ride bikes. There are large wonderful playgrounds for the kids, adjacent to kiosks for the adults. Inland again are huge car parks, with occassional public conveniences. The boundary of the beach is marked by The Esplanade.

On hot evenings in Adelaide many thousands of people come to Semaphore Beach, as the Beach is the nearest surf for about a third of Adelaide's population. The Esplanade becomes congested with traffic. Locals walk or pushbike to the supermarket on the main street as there is no hope of a car park. The Jetty, being at the end of the main street, is very popular. A walk out to the end of the Jetty and back is popular with old and new lovers. Many people wade through the water next to the Jetty to cool their legs, without any thought of actually swimming.

Despite the high usage, Semaphore has the least state government investment of the metropolitan beaches. This inattention is partly to do with the lack of available land for further housing development, as nothing attracts this state goverment like a billion dollar housing development such those at as West Beach and Glenelg. On an operational level, treating the Beach as vacant is useful for the government as it allows it to mine the Beach for sand to use on the other beaches (Adelaide's beaches lost their sand due to seaweed dying from pollution runoff, the increased northerly current dropping the eroded sand at Semaphore).

The beach itself is usually shallow, which accounts for the long length of the jetty (which is only one-third of its original length, in the days when sailing ships docked there). There are a number, usually two, large sandbars only some of which are exposed at low tide.

Somewhere between 20m and 50m out to sea the sandbars end and the deep water suddenly starts within a single step.

There are a number of deep channels through the sandbars. These are created by the currents rushing through to fill or empty the pools of water between the exposed sandbars. A strong northerly current tends to push those unaware along the beach and into the channels.

At the south of the beach is a groine. This attractive nuisance is a island created from geotextile bags. By design, high tide washes across the top of the island. It was placed there by the state government to prevent the current from carrying the sand away from under some housing built too close to the beach in a 1980s housing development.

Roughly one person dies on the beach each year. About half are drownings, the others being drug overdoses and nasty people choosing the the wintertime solitude of the sanddunes to do their evil work and the like. The drownings are usually of poor swimmers, caught by unexpectedly deep waters.

One occured on the groine, the summer it was installed. A non-swimmer girl was caught out by the high tide leaving her nowhere to go. The state government foolishly then added signs rather than also building a refuge which would give others time to save those in danger.

The most recent occurred near the Jetty. A non-swimmer was walking along a submerged sandbar and either walked off the edge or walked into a channel. A little dog paddle along with the current is all that is needed for self-rescue, but sadly the person must have flailed about with no purpose.

Today's article in The Australian complains that there are no paid lifesavers at the Beach. I'm not sure they would have helped and this sounds like a complaint from someone unfamiliar with our Beach. The Surf Lifesaving Club can't be seen from the base of the Jetty.

I've no idea how or why the SLSC moved from alongside the Jetty to way down south. Photos from the 1930s show it alongside the Jetty. Maybe it is time to move it back, although that just reverses the problem.

The Club itself seems an odd beast from the outside. At the recent local council elections it supported the a particular candidate for Mayor of Port Adelaide. I've no idea why the Semaphore SLSC sought a role in partisan local politics. It seemed at the time to be highly inappropiate. It certainly limits support for the Club, both in participation and in donations.

In summary, Semaphore Beach is safer than many beaches. It is shallow, the waves are broken far out to sea by the sandbars, there are no huge rips. The risk is simply that of the suddenness of deep water if you move about.

I have small kids. I drop my bags in a spot away from a channel. Then I keep fetching the kids back to the spot marked by the bags. I don't pick up the bags and follow the kids, as they will inevitably be pushed northwards by the current and end up in the channel just south of the Jetty. The kids get about 10m of scope, which isn't enough to fall into the deep water off the ends of the sandbars. I usually go into the water with the kids.

I wouldn't play on the groine. If one of those bags splits or shifts and grabs a limb then nothing will save you. Swimming through the current on the inside of the groine is a bitch. Swimming around the outside is no better, as the surge tends to push you inwards onto the groine whilst the current is simultaneously pushing you outwards, so it takes a lot of work to keep on track.