Watershed Monitoring for Marsh Bayou (030603)
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Watershed Monitoring for Marsh Bayou (030603) LDEQ NPS Program
description
Watershed Monitoring for Marsh Bayou (030603). LDEQ NPS Program. Goals. To investigate water conditions at loading sites identified by the AnnAGNPS model and at other points in the watershed to identify potential NPS pollution loading points - PowerPoint PPT Presentation
Transcript of Watershed Monitoring for Marsh Bayou (030603)
Watershed Monitoring for Marsh Bayou (030603)
LDEQ NPS Program
Goals
• To investigate water conditions at loading sites identified by the AnnAGNPS model and at other points in the watershed to identify potential NPS pollution loading points
• To identify potential sources of NPS loading coming into the watershed
• To monitor attainment for water quality criteria• To identify where potential BMPs are needed
within the watershed
Recon Work
• Met with Surveys group to go out and recon potential sites
• Evaluated sites for potential flow and tape down measurements
• Evaluated AnnAGNPS model outputs for loading to the stream
• Gained access to stream below ambient site for data comparison
January February March April May June July August September October November December0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
Ambient Nitrate-Nitrite
199920052008/2009
mg/
L
June July August September October November December January February March April May0
0.1
0.2
0.3
0.4
0.5
0.6
Nitrate-Nitrite for Marsh Bayou Sites 2011-2012
401740164015401840198394020
mg/
L
January February March April May June July August September October November December0
0.2
0.4
0.6
0.8
1
1.2
0.33 0.33 0.31
0.21
0.42
0.05
0.39
0.05
0.25 0.26
0.17
Ambient Phosphorus
199920052008/2009
mg/
L
June July August September October November December January February March April May0
0.2
0.4
0.6
0.8
1
1.2
0.1340.169
0.538 0.543
0.377
0.3
0.392
0.255
0.1190.177
0.486
Phosphorus for Marsh Bayou Sites 2011-2012
401740164015401840198394020
mg/
L
January February March April May June July August September October November December0
1
2
3
4
5
6
7
8
1.421.63
0.84
2.11.75
1.05 1.04
0.520.1
1.21 1.19 1.01
Ambient TKN
199920052008/2009
mg/
L
June July August September October November December January February March April May0
1
2
3
4
5
6
7
8
0.702 0.552
1.19
1.9
1.32
0.8541.15
1.58
0.954 0.823 0.761
TKN for Marsh Bayou Sites 2011-2012
401740164015401840198394020Ax
is Ti
tle
January February March April May June July August September October November December0
30
60
90
120
56
44.4 45.5
35.2
16
8.17 9.79 8.4114.7
10.3
18.6
54.1
Ambient Turbidity
199920052008/2009
NTU
June July August September October November December January February March April May0
20
40
60
80
100
120
140
160
180
2.73 3.28 4.7 3.71 5.36 4.74
14.9
34.8 35.8 39.6
7.58
Turbidity for Marsh Bayou Sites 2011-2012
401740164015401840198394020
mg/
L
January February March April May June July August September October November December0
100
200
300
400
500
600
700
800
900
1000
169 153191
308
115
52.5100
72.5122 105 120 134
Ambient TDS
199920052008/2009
mg/
L
June July August September October November December January February March April May0
50
100
150
200
250
300
350
400
450
500
550
600
113 108132
115
212183
6028
177
88
35
Total Dissolved Solids for Marsh Bayou Sites 2011-2012
401740164015401840198394020
mg/
L
January February March April May June July August September October November December0
20
40
60
80
100
120
140
160
4 7 1018
127.5 5
9.518
4 4 7
Ambient TSS
199920052008/2009
mg/
L
June July August September October November December January February March April May0
25
50
75
100
125
150
175
200
6 919
12
24 21
514 14 13 15
Total Suspended Solids for Marsh Bayou Sites 2011-2012
401740164015401840198394020
mg/
L
January
February
March
AprilMay June
July
August
Septem
ber
October
November
December
0
1
2
3
4
5
6
7
8
9
2.1
0.770.27
0.61 0.50.165
0.5
1.17
0.13 0.22
1.9
5.34
Ambient DO
1999 2005
2008/2009
mg/
L
June July August September October November December January February March April May0
1
2
3
4
5
6
7
8
0.42 0.45 0.28 0.3 0.210.49
0.75
4.02
6.15
0.76
1.91.52
3.69
4.7
4.12
3.38
4.89
3.23
Dissolved Oxygen for Marsh Bayou Sites 2011-2012
401740164015401840198394020
mg/
L
January February March April May June July August September October NovemberDecember0
2000
4000
6000
8000
10000
12000
14000
16000
18000
170 50030
9000
30
16000
300 140 130 130 1301100
Ambient Fecal Coliform
199920052008/2009
cfu/
100m
L
June July August September October November December January February March April May0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
11000
12000
590
1700
31002500
2200
5600
50480
4200
1100480
Fecal Coliform for Marsh Bayou sites 2011-2012
401740164015401840198394020cf
u/10
0m L
Site 4017
Site 4016
Site 4015
Site 4018
Site 4019
WQN Ambient Site
Conclusions
• Bacteria problem seems to exist throughout the waterbody, however the source was not determine.
• Lack of flow through out the year during ambient conditions.
• DO problem may be more flow than pollutant related.
• Current ambient site may not be representative of the stream, at least, in the case of DO.
