Syzygy causes the bimonthly phenomena of spring and neap tides. The tidal range at Littlehampton is at spring tides and at neap tides. During neap tides, they exhibit much longer closing periods than during spring tides. The moon's gravity does Spring/neap tides. During neap tides, they exhibit much longer closing periods than during the spring tide. It is found at a higher elevation during spring tides compared to neap tides. At high-water neap tides it is . Also the necessary phytoplankton are not all washed out to sea here at neap tides. The tidal range varies from a to a neap tide. Typically this is done during neap tide (see Tide for more information on neap tide). Every August, the Chausey Regatta takes place on the first weekend of the neap tide. Bow Locks permits transfer near top of tide whether it be neap or spring. The NEAP, adopted in 1994, is the basic blueprint for environmental protection. Neap tides occur during the first and third quarter moon. A NEAP office in Bishkek was set up with funds from Switzerland.