It is a right tributary to the Nidda which itself is a right tributary of the Main .
The Wetter is a 69 kilometres ( 43 mi ) long river in the state of Hesse , Germany .
Wetter is a right tributary to the Nidda which itself is a right tributary of the Main .
The Wetter is a 69 kilometres ( 43 mi ) long river in the state of Hesse , Germany .