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Table 2 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)

 

U1

SSB effluent 1

D1

U2

SSB effluent 2

D2

Conductivity (µs/cm)

451

720

540

475

765

509

Water temperature (°C)

13.9**

12.1

13.6**

18.7*

13.6

18.2*

O2 saturation (%)

113.5

111

120

116

118.2

111.7

O2 content (mg/L)

10.92**

11

11.6**

9.94**

11.31

9.83**

NH4–N (mg/L)

0.06*

<0.04**

<0.04**

<0.04

<0.04**

NO–N (mg/L)

0.012

0.01

0.007

0.01

0.006

NO–N (mg/)L

0.7

0.9

0.9

3.8

1.1

PO–P (mg/L)

<0.05*

<0.05*

<0.05*

<0.05

<0.05*

Carbonate hardness (°dH)

16

15

19

19

Overall hardness (°dH)

15

16

20

20

pH

8.5*

8.5*

8.2*

7.95

8.1*

Chloride (mg/L)

11**

19**

13**

70

17**

  1. Values were evaluated and assessed according to the guidance values defined by LAWA (German Working Group for Water Issues; LUBW [18]) 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