Write SQL query to solve given problem: What province did the river Klaeaelv travel through and how long is the river?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.Province FROM city AS T1 INNER JOIN located AS T2 ON T1.Name = T2.City INNER JOIN river AS T3 ON T3.Name = T2.River WHERE T3.Name = 'Klaraelv'