Long Branch (fishing pier), New Jersey
Tides for Long Branch (fishing pier), New Jersey:
Friday 08/03/12 5:55AM Sunrise
Friday 08/03/12 7:36AM Moonset
Friday 08/03/12 8:56AM 5.1 feet High Tide
Friday 08/03/12 3:01PM -0.14 feet Low Tide
Friday 08/03/12 8:07PM Sunset
Friday 08/03/12 8:44PM Moonrise
Friday 08/03/12 9:12PM 5.54 feet High Tide
Saturday 08/04/12 3:29AM -0.45 feet Low Tide
Saturday 08/04/12 5:56AM Sunrise
Saturday 08/04/12 8:42AM Moonset
I am suprised that the tidal range for the open Atlantic is so low. However the the open ocean does have greater tides than the protected lagoon stats you quoted.
Since the tidal range is low you could use a floating dreger/digger to supply the sand or many other methods.
If you think it takes a million dollars to build a 2 foot high reinforced concrete wall a mile long then I will do it for half the price.
If you want some numbers;
Concrete is about $100 a cubic meter, bulk buy price.
1m heigh x 0.1m width x 1.6km (1mile ish) = 160 cubic metre ----> $16k
The price of digging the foundations and shuttering will probably treble the overall cost.
You will need a bit of re-bar as well.
My quote fot the max-delux job of building a reinforced concrete sea wall is thus $60,000 a mile.