JAXAshby wrote:
so, jeffie, are those "locks" or "gates" across The Race, or the East River, or
the Harlem River, or the Verizano Narrows, or Block Island Sound, or the Cape
Cod canal?

Nope. No need for locks there, even though the tidal differences are
over 2 feet in these areas.


Gee, they all have currents equal to or greater than the Shinnecock canal.


What's your point? Each situation is different. And the locks were
added to the Shinnecock Canal before the Shinnecock Inlet was opened by
the Hurricane of '38.


So what did you say the purpose of a lock is, jeffies?


Here's a quote I'll repeat from a local magazine. If you have trouble
with the big words we can help you:

"This problem [erosion in the canal] was solved by building tide gates
and, in 1919, a lock in the canal. The one-way tide gates -- pushed open
by high tides running south from Peconic Bay and pushed closed by high
tides running from the opposite direction -- ensure that enough water
flushes out of Peconic Bay into Shinnecock Bay to carry all the sand and
silt that would otherwise accumulate and block the canal. The lock,
rebuilt about 30 years ago, allows boats to be floated up or down to
meet the differing water levels at either end."
http://www.newsday.com/community/gui...ory-navigation