The transition from spring to neap tides occurs about every 7 days.
http://wiki.answers.com/Q/How_often_to_spring_tides_occ...
What is an spring tide? What is pergian spring tide? What does spring tide means? Why does a Spring Tide happen? What is spring and neep tides? When can a spring tide happen? What is a spring tide produced? A spring tide occurs how often?
wiki.answers.com/Q/What_is_a_spring_tide wiki.answers.com/Q/What_is_a_spring_tide
So, how often do we get spring tides and neap tides?  Well, spring tides occur every time the lunar tides line up with the Sun’s tides.  Recall that the high tides are on the side nearest a body and on the opposite side.  So, at New Moon, the Moon and Sun are both on the same side of the Earth, so we get...
astroprofspage.com/archives/68
One of the enduring visions of children at the beach is of them building sandcastles and watching in a mixture of shock and horror as the ocean surges forward at high tide, demolishing their structures. It is also critically important to know when high tide will occur when burying oneself in the sand.
www.bbc.co.uk/dna/h2g2/A408241
They will not be equally high because the distance between the Earth and Sun, and the Earth and Moon both vary and so will their tide producing effectiveness. The highest Spring tides occur when the Moon is at its closest to the Earth...the so-called Perigee Tide."- Dr. Odenwald's ASK THE ASTRONOMER;
home.hiwaay.net/~krcool/Astro/moon/moontides/ home.hiwaay.net/~krcool/Astro/moon/moontides/
Ocean Battlespace Sensing Department (Code 32) - Office of Naval Research ... ... detecting and neutralizing mines in both the ocean and littoral environment, and improving ... This department supports the Naval Science & Technology Strategic Plan in the following focus ... ... Office of Naval Research Home Page...
www.onr.navy.mil/focus/ocean/motion/tides2.htm www.onr.navy.mil/focus/ocean/motion/tides2.htm
A Spring tide occurs once every 14 days when the Earth, the Sun, and the Moon are all aligned. This will happen twice during the Moon's 28-day orbit around the Earth (the new moon and the full moon). Posted at 1.41 pm, 11/28/07. Ended at 12...
http://www.webpages.uidaho.edu/%7Esimkat/geol101_files/...
How often do high tides occur? ... Two bulges of water are also caused by the sun, called the solar tide - and these can either reinforce or partially cancel out the lunar tide to give spring and neap tides (see question 8).
www.pol.ac.uk/home/insight/tidefaq.html www.pol.ac.uk/home/insight/tidefaq.html
Tidal range often changes regularly, i.e. every fortnight (14 day period) ... Spring tides - times of greater tidal range; coincide with full moon or new moon ... Tidal range during spring tides is usually 20% higher than mean tidal range...
www.oberlin.edu/faculty/swojtal/SFWpage/161Stuff/161Lec... www.oberlin.edu/faculty/swojtal/SFWpage/161Stuff/161Lect17/tsld001.htm
wWednesday, June 02, 2004 ... Gretchen has had recurrent cystitus since she was 2. Almost every single urine specimen has been normal. Sometimes they find a couple of red blood cells, but mostly they never find anything abnormal. 3 years ago, she had bladder surgery after an xray showed some stones in the bladder. ... wSpring Tide...
springtide.nosuch.org/ springtide.nosuch.org/