| Until
the 17th century Fenland was mostly a vast marshy swamp with some
islands of higher ground - such as the Isle of Ely. In 1630 the
Earl of Bedford employed the Dutch engineer Vermuyden to drain the
southern Fenland in order to create land for agriculture. The drained
soil then exposed to the air was mostly composed of peat which began
to shrink and waste, and the ground level fell. Over the years it
became necessary to pump rainwater from the fields up into the rivers
which had remained at the pre-drainage levels.
At first, windmills
driving large scoop wheels were used which pushed and lifted up
the low-lying water. As land levels shrank further and further even
the windmills could not deal with the height of lift required (in
places the fen is now some 6 metres below river level). Fortunately
the invention of the powerful steam engine arrived in the nick of
time. The Old Engine at Stretham was one of over one hundred steam
pumping engines installed throughout the Fens and which replaced
some 800 windmills in the 1800's. In times of heavy rains and danger
of floods, farmers were reassured to see smoke belching from its
tall brick chimney and so to know that the Old Engine was at work
in its slow but effective fashion, lifting the waters.
The
Old Engine was installed in 1831 and laboured successfully until
1925, and was used as a stand-by until 1941. It was then superseded
by a more convenient and efficient diesel engine connected to a
centrifugal pump. In 1945 the diesel engine was itself superseded
by another pumping station, now electrically powered, located some
one and a half miles to the southeast on the bank of the River Cam.
It is not practical
now to operate the Old Engine by steam, so an electrical drive has
been installed to enable the manner of its former operation to be
demonstrated on the days when the Engine is open to the public.
Displays about
the history and development of land drainage and its machinery are
shown in the Engine Room.
Principal
Events at the Stretham Old Engine
1741 Waterbeach
Level constituted by Act of Parliament.
1814 John Rennie reported on his survey of the drainage.
1829 Mr.Glynn invited to decide best situation for engine. (This
station rests on a bed of hard gravel so no piling was required).
1831 Contract for engine, boiler and scoopwheel awarded to Mr.Glynn.
1831 Contract for building brickwork of engine house awarded to
Mr.Briggs.
1847 Third boiler installed.
1850 New scoopwheel fitted 33 feet in diameter.
1871 Two original boilers renewed.
1878 Third boiler renewed.
1892 Crankshaft replaced.
1896 New scoopwheel, 37 feet in diameter.
1925 Mirrlees diesel started work driving a Gwynnes centrifugal
pump. (Their pumping ability was three times that of the steam engine
and scoopwheel).
1941 Steam engine last used
1947 Mirrlees diesel and the Station relegated to standby duties.
1958 Preservation appeal for the engine on T.V by L.E.Harris.
1959 Stretham Engine Preservation Trust formed.
1966 Mirrlees diesel last worked.
1969 Electricity driven pump placed near Bottisham Lock pumping
into the River Cam
1988 Stretham Engine Trust formed and a new 99 year lease obtained
from the Waterbeach Level Internal Drainage Board.
1989 National appeal for funds.
1993 Phase 1 of renovation works.
1996 Electrical drive fitted to flywheel of the steam engine.
|