Word nemiga, Letto- Lithuanian origin and means insomnia, wakefulness, perhaps in the past it meant security, security guard post or importance of the river in relation to the settlement . And in fact - its position in relation to the citadel , first on strengthening small Svislochi , which flow into other tributaries Vyacha , Ratomka , horseflies and Trostyanka Cna and preserved from the original inhabitants hydronym say that the river was quite large . In this regard Nyamiha exactly repeats the fate of the river in Moscow Neglinnoy : just at the confluence of small to large river put strengthening , strengthening dike and small river channel diverges, then the river gets into the city limits , then it violates their spills comfort center and its inhabitants hiding in an underground channel - collector , and on the surface are only the names of the river and its bridges in the names of streets and idle speculation journalists about every creature in the river caves .