Across an estuary.
Tidal power is harnessed by constructing a dam across the mouth of an estuary or a bay.
Building a barrier across a river estuary can cause many problems with the environment. for example, some rivers are home to rare species of fish and birds. Their habitat may be damaged in the process of building. Also systems like this can cost lots of money to build and will require large investments from businesses who may not necessarily see the long-term benefits of this type of development.
a spit
estuary means a water passage where the tide meets a river current. so you could say "it was hard to get across the estuary, because the current was so ruff."
Across the Humber Estuary on the north east coast of England near Hull.
A good place for a tidal barrage is somewhere like a river mouth, or a bay that has a narrow opening to the sea. You want a lot of water to come into the collection area at high tide, and then you want to catch it all in as small an area as possible to set up your turbines to harness the power of all the water. The Rance River Power Station in Brittany, France, is the world's first tidal power station. See link below.
baymouth bar
It depends how you measure it. You could measure the temperature at the same time at many places across the estuary and at different depths in the water and the mud. Then find the average temperature at that one time.You could measure the temperature at one place in the estuary every week for a year. Then find the average temperature for the year.
Souldryou run conduit parallel with the building if the fastest way is diagonal across the building
A tidal barrage is a dam or a weir built across the inlet to a bay or river mouth. There are gates, or sluices, that open to let water in as the tide rises, and out after it falls. This moving water spins turbines to generate electricity.
A tidal fence is a series of underwater turbines placed in a line to capture energy from tidal currents, whereas a tidal barrage is a dam-like structure built across a tidal estuary or bay to capture energy from the rise and fall of tides. Tidal fences are typically smaller in scale and placed in open water, while tidal barrages involve impounding water in a basin behind the structure.