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Table 6 Physicochemical data of sampling events 1 and 2

From: Water quality assessment in the “German River of the years 2014/2015”: how a case study on the impact of a storm water sedimentation basin displayed impairment of fish health in the Argen River (Southern Germany)

 

U3

SSB effluent 3

D3

U4

SSB effluent 4

D4

U5

SSB effluent 5

D5

Conductivity (µs/cm)

460

605

474

476

950

490

506

756

520

Water temp. (°C)

10.5**

10.4

9.8**

15.7**

13

14.8**

12.4**

13.2

12.4**

O2 saturation (%)

100

91.1

96

107.0

103

110

102.4

95.1

97.7

O2 content (mg/L)

10.41**

9.47

10.1**

9.9**

10

10.4**

10.27**

9.28

9.66**

NH–N (mg/L)

<0.04**

0.07

<0.04**

<0.04**

0.09

<0.04**

<0.04**

<0.04

<0.04**

NO–N (mg/L)

0.005

0.016

0.006

0.01

0.015

0.01

0.005

0.01

0.005

NO3–N (mg/L)

0.7

2

0.9

1.10

2.8

1

1.2

3.9

1.1

PO4-P (mg/L)

<0.05*

<0.05

<0.005*

<0.005*

<0.05

<0.005*

<0.005*

<0.05

<0.005*

Carbonate hardness (°dH)

18

21

17

16.00

20

16

16

21

17

Overall hardness (°dH)

18

21

18

17.00

22

18

19

23

18

pH

8.27*

8.1

8.23*

8.40*

8.25

8.4*

8.4*

8.25

8.4*

Chloride (mg/L)

8**

61

11**

11.00

121

13*

11*

42

15*

  1. Values were evaluated and assessed according to the new guidance values defined by LAWA (German Working Group for Water Issues; LUBW [17]) and the German Regulation Act for Surface Waters of 2011 (OGewV [16])
  2. Values marked with two asterisks (**) point to very good ecological conditions; values marked with one asterisk (*) point to ecological conditions that are at least good