Complex sentence: The maximal mineralization 500-700 mg/l. Average sediment in mouth per year is 80 mm. In the middle stream the river crosses the biggest forest in Transkama Tatarstan.
Split into simpler sentences: The maximal mineralization 500-700 mg/l. The average sediment deposition at the river mouth per year is. In its middle reaches the river crosses the biggest forest in Transkama Tatarstan.