History Twentekanaal

twentekanaal @ dochterense bridge in vicinity of lochem

although first plan canal twente dates middle of 19th century, construction did not start until 1930, after quarrel of quarter of century 8 subjects. canal constructed secure better supply of raw materials textile industry (rough cotton) , supply of coal mines in limburg. of canal constructed job project unemployed workers during crisis. canal largely dug hand. in 1938 canal completed. in 1953 canal extended , fork constructed, connecting harbour of almelo , kanaal almelo-de haandrik twentekanaal.

until 2003 channel water pumped ground , filtered sand , gravel; drinking water produced way provided 80% of drinking water needs of enschede. due large fire @ vredestein in enschede channel section closed weeks prevent spreading pollution. research water company vitens in february 2008 showed water twentekanaal no longer suitable water.

the twentekanaal has been widened , deepened cemt-class iv cemt-class va waterway between 2004 , 2007. means big rhine ship (max. 11.50 wide, draught of 2.70 , length of 110 metres) can use canal. depth of fairway specified width 5 meter, threshold depth @ locks specified 3,75 meter below channel level.

simultaneously excavation greater depth, canal widened locally. between goor , delden width increases 40 51 meters. herewith so-called natural banks constructed. offers, example, water hit deer possibility leave canal. there suitable spawning grounds fish. sand excavated reused directly rijkswaterstaat in construction of new section of motorway in almelo, , boulders founded in widening surfaced used again in construction of bottom , banks.

a study related history of canal speaks of success out of failure : economic development result of construction of canal has been disappointment, canal has had huge impact on water management.