The Catchments

Johnstone River Catchment

Mulgrave River Catchment

Tully River Catchment

Inflow

Outflow

Inflow

Outflow

Inflow

Outflow

Mean (m)

1.29 ± 0.27

0.72 ± 0.11

0.98 ± 0.25

0.35 ± 0.07

0.74 ± 0.15

0.41 ± 0.05

Min-max (m)

0.07 - 3.12 (78)

0.14 - 1.41 (51)

0.03 - 3.54 (113)

0.01 - 1.85 (112)

0.07 - 1.83 (81)

0.04 - 1.15 (72)

Average cumulative inflow/outflow (m)

5.17

4.56

6.47

3.47

5.82

5.69

Average recharge/discharge (m)

0.776

0.684

0.971

0.561

0.873

0.854

Nitrate-N concentration in groundwater

Mean (μg∙L⁻¹)

1748 (36)

768 (27)

4104 (84)

Min-max (μg∙L⁻¹)

300 - 2800

23 - 1340

1761 - 5847

Nitrate-N imported after rainfall events and that exported between rainfall events

Import

Export

Import

Export

Import

Export

Mean (μg∙L⁻¹)

561 ± 139

723 ± 159

158 ± 72

128 ± 24

767 ± 165

761 ± 140

Min-max (μg∙L⁻¹)

0 - 1470 (86)

200 - 1670 (73)

13 - 561 (122)

24 - 401 (72)

8 - 2439 (101)

50 - 2412 (94)

Average cumulative import/export (μg∙L⁻¹)

2.519 × 10⁹

2.446b × 10⁹

1.051 × 10⁹

7.52 × 10⁸

3.381 × 10¹⁰

2.627 × 10¹⁰

Average import/export (kg/ ha)

25.29

24.5

10.5

7.5

33.8

26.3

Chloride imported after rainfall events and that exported between rainfall events

Import

Export

Import

Export

Import

Export

Mean (μg∙L⁻¹)

1146 ± 259

1325 ± 315

1994 ± 750

2515 ± 857

3128 ± 550

3791 ± 750

Min-max (μg∙L⁻¹)

0 - 3100 (82)

100 - 3100 (81)

70 - 10700 (140)

40 - 11800 (128)

250 - 9510 (86)

500 - 22,374 (128)

Total dissolved solutes imported after rainfall events and that exported between rainfall events

Import

Export

Import

Export

Import

Export

Mean (mg∙L⁻¹))

6.4 ± 1.2

5.24 ± 1.8

4.01 ± 1.1

3.1 ± 0.9

10.9 ± 3.4

8.2 ± 2.5

Min-max (mg∙L⁻¹)

0.0 - 13.2 (93)

2.0 - 14.2 (67)

1.0 - 23.8 (241)

0.0 - 10.5 (83)

0.0 - 65.2 (163)

0.0 - 62.1 (156)

Depth to watertable from ground surface (m)

Mean (m)

7.62 ± 0.24

4.08 ± 0.26

2.82 ± 0.10

Min-max (m)

5.05 - 11.4 (31)

0.48 - 8.55 (37)

1.07 - 4.77 (29)