Table 3.

Time residence of the water mass and stream velocity for sections 1 and 2 of the studied river during the 9 campaigns

Number of sampling campaign	Date	Water level (cm)	Time residence section 1 (min)	Stream velocity section 1 (m/s)	Time residence section 2 (min)	Stream velocity section 2 (m/s)
1	06/24/2014	42	183	0.11	634	0.04
2	01/07/2014	42	183	0.11	634	0.04
3	07/16/2014	44	166	0.12	553	0.05
4	01/14/2015	75	51	0.41	103	0.26
5	02/12/2015	71	57	0.36	120	0.22
6	03/17/2105	58	89	0.23	229	0.12
7	04/21/2105	53	109	0.19	308	0.09
8	06/03/2015	45	158	0.13	517	0.06
9	07/14/2015	43	174	0.12	592	0.05