4.3. victorian catchments · assessment of historical data for the murray-darling basin ministerial...
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Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
122
4.3. VICTORIAN CATCHMENTS
Only two out of the five stations analysed (403241 Ovens @ Peechelba-east
and 406202 Campaspe @ Pumps) indicated a statistically significant trend.
Both of these stations were observed to have a trend of 0.4 ± 0.3 µS/cm/yr.
In the case of the catchment salt balances, all stations had mean SO/SI ratios
greater than one. The mean SO/SI ratio for 407203 Loddon @ Laanecoorie
was 4.51, with yearly values ranging from 0.86 in 1998 to 8.4 in 1996. For
406202 Campaspe @ Pumps the mean SO/SI ratio was 2.99, with yearly
values ranging from 0.62 in 1999 to 6.5 in 1989. For 402205 Kiewa @
Bandiana the SO/SI ratio was 2.34, with yearly values ranging from 1.35 in
1997 to 3.44 in 1995. The last station analysed in Victoria was 409204 Murray
River @ Swan Hill. For this station the SO/SI ratio was 1.90 with yearly values
ranging from 0.68 in 1998 to 3.01 in 1989.
4.3.1. Loddon River Catchment
Table 25: Statistical summary of the data at Loddon @ Laanecoorie (Flow statistics only from days where EC data has been recorded)
Station Name and Number
Flow (ML/d)
EC (µS/cm) Saltload (t/d)
median 263 850 143 mean 424 1054 188 max 2397 3100 992 min 3 410 2
80%ile 765 1560 275
Lodd
on R
iver
@
Laan
ecoo
rie
(407
203)
95%ile 1180 2197 535
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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Flow - Loddon @ Laanecoorie (407203)
0
10000
20000
30000
40000
50000
60000
1973 1976 1979 1982 1984 1987 1990 1993 1995 1998 2001 2004
Date
Flow
(ML/
d)
Figure 101: Flow at Loddon @ Laanecoorie (Only on days where EC data has been recorded)
EC - Loddon @ Laanecoorie (407203)
0
500
1000
1500
2000
2500
3000
3500
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
EC (µ
S/cm
)
Figure 102: EC at Loddon @ Laanecoorie
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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Saltload - Loddon @ Laanecoorie (407203)
0
500
1000
1500
2000
2500
3000
3500
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Saltl
oad
(t/d)
Figure 103: Saltloads at Loddon @ Laanecoorie
Flow recurrence - Loddon @ Laanecoorie (407203)
0
500
1000
1500
2000
2500
0 10 20 30 40 50 60 70 80 90 100
% of time
Flow
(ML/
d)
Figure 104: Flow exceedence curves at Loddon @ Laanecoorie (Based on flows on days where EC has been recorded)
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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EC recurrence - Loddon @ Laanecoorie (407203)
0
500
1000
1500
2000
2500
3000
3500
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
EC (µ
S/cm
)
Figure 105: EC exceedence curves at Loddon @ Laanecoorie
Saltload recurrence - Loddon @ Laanecoorie (407203)
0
200
400
600
800
1000
1200
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
Saltl
oad
(t/d)
Figure 106: Saltload exceedence curves at Loddon @ Laanecoorie
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126
Smoothed EC - Loddon @ Laanecoorie (407203)
0
500
1000
1500
2000
2500
3000
3500
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Smoo
thed
EC
(µS/
cm)
Smoothed EC trendMean monthly EC
Figure 107: Mean monthly EC and smoothed EC trend corrected for flow and season at Loddon @ Laanecoorie
Flow Vs Saltload - Loddon @ Laanecoorie (407203)
y = 0.3908xR2 = 0.7991
0
200
400
600
800
1000
0 500 1000 1500 2000 2500
Flow (ML/d)
Saltl
oad
(t/d)
Figure 108: Flow Vs Saltload at Loddon @ Laanecoorie
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Flow Vs EC - Loddon @ Laanecoorie (407203)
0
500
1000
1500
2000
2500
3000
3500
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
Flow (ML/d)
EC (µ
S/cm
)
Figure 109: Flow Vs EC at Loddon @ Laanecoorie
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Table 26: Salt and water balances for Loddon @ Laanecoorie
Drainage Division: Loddon RiverStation: 407203 (Loddon @ Laanecoorie)Contributing Area: 4275 km2
KyabramSaltfall Concentration: 6.9 mg/L
1985 554 16342 2368350 32162 81614 32162 81614 1.97 0.03 7.521986 627 18495 2680425 81514 208190 81514 208190 4.41 0.08 19.071987 630 18583 2693250 89003 228195 89003 228195 4.79 0.08 20.821988 684 20176 2924100 129568 330695 129568 330695 6.42 0.11 30.311989 690 20353 2949750 148730 380887 148730 380887 7.31 0.13 34.791990 535 15781 2287125 72624 186072 72624 186072 4.60 0.08 16.991991 581 17138 2483775 70068 178366 70068 178366 4.09 0.07 16.391992 726 21415 3103650 119654 306084 119654 306084 5.59 0.10 27.991993 738 21769 3154950 172564 441590 172564 441590 7.93 0.14 40.371994 352 10383 1504800 57445 146592 57445 146592 5.53 0.10 13.441995 598 17640 2556450 61451 155685 61451 155685 3.48 0.06 14.371996 719 21209 3073725 178111 454330 178111 454330 8.40 0.15 41.661997 478 14100 2043450 51088 130843 51088 130843 3.62 0.06 11.951998 547 16135 2338425 13896 34840 13896 34840 0.86 0.01 3.251999 674 19881 2881350 24943 63026 24943 63026 1.25 0.02 5.832000 636 18760 2718900 36605 92589 36605 92589 1.95 0.03 8.56
Mean 611 18010 2610155 83714 213725 83714 213725 4.51 0.08 19.58
Salt and water balances for station 407203.
Saltfall Station:
Year Rainfall (mm)
Rainfall Salt Input
(tonnes)
Rainfall Water Input (ML)
Streamflow Salt Output (tonnes)
Streamflow Water Output
(ML)
Total Salt Output (tonnes)
Total Water Output (ML) Total SO/SI Total
WO/WI
Total Output/Area (tonnes/km2)
Comments
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
129
4.3.2. Campaspe River Catchment
Table 27: Statistical summary of the data at Campaspe @ Pumps (Flow statistics only from days where EC data has been recorded)
Station Name and Number
Flow (ML/d)
EC (µS/cm) Saltload (t/d)
median 42 760 22 mean 509 861 151 max 47200 2700 13707 min 1 66 1
80%ile 225 1210 88
Cam
pasp
e R
iver
@
Pum
ps
(406
202)
95%ile 2550 1690 750
Flow - Campaspe @ Pumps (406202)
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
50000
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Flow
(ML/
d)
Figure 110: Flow at Campaspe @ Pumps (Only on days where EC data has been recorded)
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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EC - Campaspe @ Pumps (406202)
0
500
1000
1500
2000
2500
3000
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
EC (µ
S/cm
)
Figure 111: EC at Campaspe @ Pumps
Saltload - Campaspe @ Pumps (406202)
0.0
2000.0
4000.0
6000.0
8000.0
10000.0
12000.0
14000.0
16000.0
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Saltl
oad
(t/d)
Figure 112: Saltloads at Campaspe @ Pumps
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Flow recurrence - Campaspe @ Pumps (406202)
0
5000
10000
15000
20000
25000
30000
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
Flow
(ML/
d)
Figure 113: Flow exceedence curves at Campaspe @ Pumps (Based on flows on days where EC has been recorded)
EC recurrence - Campaspe @ Pumps (406202)
0
500
1000
1500
2000
2500
3000
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
EC (µ
S/cm
)
Figure 114: EC exceedence curves at Campaspe @ Pumps
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Saltload recurrence - Campaspe @ Pumps (406202)
0
2000
4000
6000
8000
10000
12000
14000
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
Saltl
oad
(t/d)
Figure 115: Saltload exceedence curves at Campaspe @ Pumps
Smoothed EC - Campaspe @ Pumps (406202)
0
500
1000
1500
2000
2500
3000
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Smoo
thed
EC
(µS/
cm)
Smoothed EC trendMean monthly EC
Figure 116: Mean monthly EC and smoothed EC trend corrected for flow and season at Campaspe @ Pumps
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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Flow Vs Saltload - Campaspe @ Pumps (406202)
y = 0.2506xR2 = 0.9513
0
2000
4000
6000
8000
10000
12000
14000
0 5000 10000 15000 20000 25000 30000 35000 40000 45000 50000
Flow (ML/d)
Saltl
oad
(t/d)
Figure 117: Flow Vs Saltload at Campaspe @ Pumps
Flow Vs EC - Campaspe @ Pumps (406202)
0
500
1000
1500
2000
2500
3000
0 5000 10000 15000 20000 25000 30000 35000 40000 45000 50000
Flow (ML/d)
EC (µ
S/cm
)
Figure 118: Flow Vs EC at Campaspe @ Pumps
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Table 28: Salt and water balances for Campaspe @ Pumps
Drainage Division: Campaspe RiverStation: 406202 (Campaspe @ Pumps/Rochester)Contributing Area: 3425 km2
KyabramSaltfall Concentration: 6.9 mg/L
1985 649 15337 2222825 22738 60011 22738 60011 1.48 0.03 6.641986 672 15881 2301600 103159 358178 103159 358178 6.50 0.16 30.121987 623 14723 2133775 54573 190608 54573 190608 3.71 0.09 15.931988 742 17535 2541350 63742 221004 63742 221004 3.64 0.09 18.611989 702 16590 2404350 97895 349169 97895 349169 5.90 0.15 28.581990 535 12643 1832375 22928 59607 22928 59607 1.81 0.03 6.691991 553 13069 1894025 23680 54662 23680 54662 1.81 0.03 6.911992 802 18953 2746850 99180 394611 99180 394611 5.23 0.14 28.961993 774 18292 2650950 106133 441348 106133 441348 5.80 0.17 30.991994 327 7728 1119975 8916 22665 8916 22665 1.15 0.02 2.601995 616 14558 2109800 32252 100089 32252 100089 2.22 0.05 9.421996 731 17275 2503675 95021 398527 95021 398527 5.50 0.16 27.741997 455 10753 1558375 8521 20649 8521 20649 0.79 0.01 2.491998 538 12714 1842650 11221 19616 11221 19616 0.88 0.01 3.281999 600 14180 2055000 8830 15779 8830 15779 0.62 0.01 2.582000 694 16401 2376950 12383 47841 12383 47841 0.75 0.02 3.62
Mean 626 14790 2143408 48198 172148 48198 172148 2.99 0.07 14.07
Total Water Output (ML) Total SO/SI Total
WO/WI
Total Output/Area (tonnes/km2)
Salt and water balances for station 406202.
Saltfall Station:
Year Rainfall (mm)
Rainfall Salt Input
(tonnes)
Rainfall Water Input (ML)
Streamflow Salt Output (tonnes)
Streamflow Water Output
(ML)
Total Salt Output (tonnes) Comments
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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4.3.3. Ovens River Catchment
Table 29: Statistical summary of the data at Ovens @ Peechelba-East (Flow statistics only from days where EC data has been recorded)
Station Name and Number
Flow (ML/d)
EC (µS/cm) Saltload (t/d)
median 1822 72 78 mean 4679 80 154 max 107471 610 2708 min 11 11 2
80%ile 6550 97 255 Ove
ns @
Pe
eche
lba-
east
(4
0324
1)
95%ile 20300 135 675
Flow - Ovens @ Peechelba-East (403241)
0
20000
40000
60000
80000
100000
120000
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Flow
(ML/
d)
Figure 119: Flow at Ovens @ Peechelba-East (Only on days where EC data has been recorded)
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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EC - Ovens @ Peechelba-East (403241)
0
100
200
300
400
500
600
700
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
EC (µ
S/cm
)
Figure 120: EC at Ovens @ Peechelba-East
Saltload - Ovens @ Peechelba-East (403241)
0
500
1000
1500
2000
2500
3000
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Saltl
oad
(t/d)
Figure 121: Saltload at Ovens @ Peechelba-East
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Flow recurrence - Ovens @ Peechelba-East (403241)
0
20000
40000
60000
80000
100000
120000
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
Flow
(ML/
d)
Figure 122: Flow exceedence curves at Ovens @ Peechelba-East (Based on flows on days where EC has been recorded)
EC recurrence - Ovens @ Peechelba-East (403241)
0
100
200
300
400
500
600
700
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
EC (µ
S/cm
)
Figure 123: EC exceedence curves at Ovens @ Peechelba-East
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Saltload recurrence - Ovens @ Peechelba-East (403241)
0
500
1000
1500
2000
2500
3000
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
Saltl
oad
(t/d)
Figure 124: Saltload exceedence curves at Ovens @ Peechelba-East
Smoothed EC - Ovens @ Peechelba-East (403241)
20
40
60
80
100
120
140
160
180
200
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Smoo
thed
EC
(µS/
cm)
Smoothed EC trendMean monthly EC
Figure 125: Mean monthly EC and smoothed EC trend corrected for flow and season at Ovens @ Peechelba-East
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Flow Vs Saltload - Ovens @ Peechelba-East (403241)
y = 0.0329xR2 = 0.9529
0
500
1000
1500
2000
2500
3000
3500
4000
0 20000 40000 60000 80000 100000 120000
Flow (ML/d)
Saltl
oad
(t/d)
Figure 126: Flow Vs Saltload at Ovens @ Peechelba-East
Flow Vs EC - Ovens @ Peechelba-East (403241)
0
100
200
300
400
500
600
700
0 20000 40000 60000 80000 100000 120000
Flow (ML/d)
EC (µ
S/cm
)
Figure 127: Flow Vs EC at Ovens @ Peechelba-East
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Table 30: Salt and water balances for Ovens @ Peechelba-East
Drainage Division: Ovens RiverStation: 403241 (Ovens River @ Peechelba East)Contributing Area: 6250 km2
AlburySaltfall Concentration: 5.1 mg/L
1985 1042 33214 6512500 14210 1155202 14210 1155202 0.43 0.18 2.27 11986 1242 39589 7762500 15403 2495532 15403 2495532 0.39 0.32 2.46 11987 989 31524 6181250 9895 1397642 9895 1397642 0.31 0.23 1.58 11988 1282 40864 8012500 17839 1653431 17839 1653431 0.44 0.21 2.85 11989 1216 38760 7600000 22544 2640930 22544 2640930 0.58 0.35 3.61 11990 1155 36816 7218750 17284 2760321 17284 2760321 0.47 0.38 2.77 11991 966 30791 6037500 13850 1486521 13850 1486521 0.45 0.25 2.22 11992 1375 43828 8593750 17634 2901810 17634 2901810 0.40 0.34 2.82 11993 1352 43095 8450000 101657 2849104 101657 2849104 2.36 0.34 16.27 11994 749 23874 4681250 34505 630095 34505 630095 1.45 0.13 5.52 11995 1089 34712 6806250 76817 100089 76817 100089 2.21 0.01 12.291996 1316 41948 8225000 101459 398527 101459 398527 2.42 0.05 16.231997 698 22249 4362500 26260 20649 26260 20649 1.18 0.00 4.201998 1085 34584 6781250 47832 19616 47832 19616 1.38 0.00 7.65 21999 1086 34616 6787500 42338 15779 42338 15779 1.22 0.00 6.772000 1193 38027 7456250 1060 47841 1060 47841 0.03 0.01 0.17 3
Mean 1115 35531 6966797 35037 1285818 35037 1285818 0.98 0.17 5.61
Comments: 1
2 Missing 44 days3 Missing 335 days
Salt and water balances for station 403241.
Comments
Computed from monthly flows to give average daily flow from avearge daily flows sltload calculated from relationship of flow to saltload using periodic data
Total Water Output (ML) Total SO/SI Total
WO/WI
Total Output/Area (tonnes/km2)
Rainfall Water Input (ML)
Streamflow Salt Output (tonnes)
Streamflow Water Output
(ML)
Total Salt Output (tonnes)
Saltfall Station:
Year Rainfall (mm)
Rainfall Salt Input
(tonnes)
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141
4.3.4. Kiewa River Catchment
Table 31: Statistical summary of the data for Kiewa @ Bandiana (Flow statistics only from days where EC data has been recorded)
Station Name and Number
Flow (ML/d)
EC (µS/cm) Saltload (t/d)
median 1141 47 30 mean 1804 48 52 max 43161 150 1058 min 6 24 0.2
80%ile 2920 55 95 Kie
wa
@
Ban
dian
a (4
0220
5)
95%ile 5520 65 185
Flow at Kiewa @ Bandiana (402205)
0
10000
20000
30000
40000
50000
1973 1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Time (yrs)
Flow
(ML/
d)
Figure 128: Flow at Kiewa @ Bandiana (Only on days where EC data has been recorded)
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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EC at Kiewa @ Bandiana (402205)
0
20
40
60
80
100
1973 1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Time (yrs)
EC (U
m/c
m)
Figure 129: EC at Kiewa @ Bandiana
Saltload at Kiewa @ Bandiana (402205)
0
200
400
600
800
1000
1200
1973 1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Time (yrs)
Saltl
oad
(t/d)
Figure 130: Saltloads at Kiewa @ Bandiana
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
143
Flow recurrence - Kiewa @ Bandiana (402205)
0
5000
10000
15000
20000
25000
30000
35000
40000
45000
0 10 20 30 40 50 60 70 80 90 100% of time less than value
Flow
(ML/
d)
Figure 131: Flow exceedence curves at Kiewa @ Bandiana (Based on flows on days where EC has been recorded)
EC recurrence - Kiewa @ Bandiania (402205)
0
20
40
60
80
100
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
EC (µ
S/cm
)
Figure 132: EC exceedence curves at Kiewa @ Bandiana
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Saltload recurrence - Kiewa @ Bandiana (402205)
0
200
400
600
800
1000
1200
0 10 20 30 40 50 60 70 80 90 100% of time less than value
Saltl
oad
(t/d)
Figure 133: Saltload exceedence curves at Kiewa @ Bandiana
Smoothed EC - Kiewa @ Bandiana (402205)
0
20
40
60
80
100
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Smoo
thed
EC
(µS/
cm)
Smoothed EC trendMean monthly EC
Figure 134: Mean monthly EC and smoothed EC trend corrected for flow and season at Kiewa @ Bandiana
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Flow Vs Saltload - Kiewa at Bandiana (402205)
y = 0.0348xR2 = 0.9539
0
200
400
600
800
0 2000 4000 6000 8000 10000 12000 14000 16000 18000 20000
Flow (ML/day)
Saltl
oad
(t/d)
Figure 135: Flow Vs Saltload at Kiewa @ Bandiana
Flow Vs EC - Kiewa at Bandiana (402205)
0
20
40
60
80
100
0 5000 10000 15000 20000 25000 30000
Flow (ML/day)
EC (µ
S/cm
)
Figure 136: Flow Vs EC at Kiewa @ Bandiana
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
146
Table 32: Salt and water balances for Kiewa @ Bandiana
Drainage Division: Kiewa RiverStation: 402205 (Kiewa River @ Bandiana)Contributing Area: 1775 km2
AlburySaltfall Concentration: 5.1 mg/L
1985 1145 10365 2032375 16050 483501 16050 483501 1.55 0.24 9.041986 1390 12583 2467250 29597 859694 29597 859694 2.35 0.35 16.671987 1079 9768 1915225 19450 580284 19450 580284 1.99 0.30 10.961988 1387 12556 2461925 23125 649902 23125 649902 1.84 0.26 13.031989 1294 11714 2296850 29875 779855 29875 779855 2.55 0.34 16.831990 1268 11479 2250700 32513 885522 32513 885522 2.83 0.39 18.321991 1020 9234 1810500 20413 641058 20413 641058 2.21 0.35 11.501992 1323 11976 2348325 33728 928477 33728 928477 2.82 0.40 19.001993 1292 11696 2293300 33784 918694 33784 918694 2.89 0.40 19.031994 768 6952 1363200 16551 475724 16551 475724 2.38 0.35 9.321995 878 7948 1558450 27303 837784 27303 837784 3.44 0.54 15.381996 1312 11877 2328800 32558 975825 32558 975825 2.74 0.42 18.341997 749 6780 1329475 9153 309538 9153 309538 1.35 0.23 5.161998 1087 9840 1929425 16353 575686 16353 575686 1.66 0.30 9.211999 1149 10401 2039475 17648 503131 17648 503131 1.70 0.25 9.942000 1296 11732 2300400 37774 990363 37774 990363 3.22 0.43 21.28
Mean 1152 10431 2045355 24742 712190 24742 712190 2.34 0.35 13.94
Total SO/SI Total WO/WI
Total Output/Area (tonnes/km2)
Comments
Salt and water balances for station 402205.
Saltfall Station:
Year Rainfall (mm)
Rainfall Salt Input
(tonnes)
Rainfall Water Input (ML)
Streamflow Salt Output (tonnes)
Streamflow Water Output
(ML)
Total Salt Output (tonnes)
Total Water Output (ML)
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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4.3.5. Upper Murray River Catchment
Table 33: Statistical summary of the data at Murray River @ Swan Hill (Flow statistics only from days where EC data has been recorded)
Station Name and Number
Flow (ML/d)
EC (µS/cm) Saltload (t/d)
median 5721 260 886 mean 9262 285 1697 max 33635 1400 14329 min 1154 85 136
80%ile 18050 365 2800 Ove
ns @
Pe
eche
lba-
east
(4
0324
1)
95%ile 25250 500 5850
Flow - Murray River @ Swan Hill (409204)
0
5000
10000
15000
20000
25000
30000
35000
40000
1973 1979 1984 1990 1995 2001
Date
Flow
(ML/
d)
Figure 137: Flow at Murray River @ Swan Hill (Only on days where EC data has been recorded)
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EC - Murray River @ Swan Hill (409204)
0
200
400
600
800
1000
1200
1973 1979 1984 1990 1995 2001
Date
EC (µ
S/cm
)
Figure 138: EC at Murray River @ Swan Hill
Saltload - Murray River @ Swan Hill (409204)
0
2000
4000
6000
8000
10000
12000
14000
16000
1973 1979 1984 1990 1995 2001
Date
Saltl
oad
(t/d)
Figure 139: Saltloads at Murray River @ Swan Hill
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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Flow recurrence - Murray River @ Swan Hill (409204)
0
5000
10000
15000
20000
25000
30000
35000
40000
0 20 40 60 80 100
% of time less than value
Flow
(ML/
d)
Figure 140: Flow exceedence curves at Murray River @ Swan Hill (Based on flows on days where EC has been recorded)
EC recurrence- Murray River @ Swan Hill (409204)
0
500
1000
1500
2000
2500
0 10 20 30 40 50 60 70 80 90 100
% of time less than value
EC (µ
S/cm
)
Figure 141: EC exceedence curves at Murray River @ Swan Hill
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
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Saltload recurrence - Murray River @ Swan Hill (409204)
0
2000
4000
6000
8000
10000
12000
14000
16000
0 20 40 60 80 100% of time less than value
Saltl
oad
(t/d)
Figure 142: Saltload exceedence curves at Murray River @ Swan Hill
Smoothed EC - Murray River @ Swan Hill (409204)
0
100
200
300
400
500
600
700
800
1976 1979 1982 1984 1987 1990 1993 1995 1998 2001
Date
Smoo
thed
EC
(µS/
cm)
Smoothed EC trendMean monthly EC
Figure 143: Mean monthly EC and smoothed EC trend corrected for flow and season at Murray River @ Swan Hill
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
151
Flow Vs Saltload - Murray River @ Swan Hill (409204)
y = 0.1944xR2 = 0.7521
0
2000
4000
6000
8000
10000
12000
14000
16000
0 5000 10000 15000 20000 25000 30000 35000 40000
Flow (ML/d)
Saltl
oad
(t/d)
Figure 144: Flow Vs Saltload at Murray River @ Swan Hill
Flow Vs EC - Murray River @ Swan Hill (409204)
0
500
1000
1500
2000
2500
0 5000 10000 15000 20000 25000 30000 35000 40000
Flow (ML/d)
EC (µ
S/cm
)
Figure 145: Flow Vs EC at Murray River @ Swan Hill
Assessment of Historical Data for the Murray-Darling Basin Ministerial Council’s End-of-Valley Target Stations
152
Table 34 Salt and water Balances for Murray River @ Swan Hill
Drainage Division: Murray RiverStation: 409204 (Murray @ Swan Hill)Contributing Area: 68900 km2
DeniliquinSaltfall Concentration: 6.0 mg/L
1985 771 318731 53121900 360217 2056047 360217 2056047 1.13 0.04 5.231986 872 360485 60080800 733976 4498695 733976 4498695 2.04 0.07 10.651987 723 298888 49814700 587914 3098426 587914 3098426 1.97 0.06 8.531988 937 387356 64559300 942165 3767961 942165 3767961 2.43 0.06 13.671989 905 374127 62354500 1184834 5791266 1184834 5791266 3.17 0.09 17.201990 804 332374 55395600 647855 4273473 647855 4273473 1.95 0.08 9.401991 750 310050 51675000 566361 3101375 566361 3101375 1.83 0.06 8.221992 994 410920 68486600 938321 4471690 938321 4471690 2.28 0.07 13.621993 967 399758 66626300 1202769 6081337 1202769 6081337 3.01 0.09 17.461994 514 212488 35414600 401845 2237303 401845 2237303 1.89 0.06 5.831995 774 319972 53328600 782162 3740759 782162 3740759 2.44 0.07 11.351996 898 371233 61872200 785895 4725016 785895 4725016 2.12 0.08 11.411997 537 221996 36999300 286364 1685554 286364 1685554 1.29 0.05 4.161998 721 298061 49676900 203434 1778955 203434 1778955 0.68 0.04 2.951999 781 322865 53810900 283773 1862415 283773 1862415 0.88 0.03 4.122000 842 348083 58013800 445024 3572101 445024 3572101 1.28 0.06 6.46
Mean 799 330462 55076938 647057 3546398 647057 3546398 1.90 0.06 9.39
Total SO/SI Total WO/WI
Total Output/Area (tonnes/km2)
CommentsStreamflow Salt Output (tonnes)
Streamflow Water Output
(ML)
Total Salt Output (tonnes)
Total Water Output (ML)Year Rainfall
(mm)
Rainfall Salt Input
(tonnes)
Rainfall Water Input (ML)
Salt and water balances for station 409204.
Saltfall Station: