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Assessment Point: MN-2
The following data are excerpts from multiple reports. While the same location in theMenomonee River watershed is represented, the assessment point IDs differ. Throughoutthe following data, Assessment Point MN-2 is also represented by:
o Reach 803
o Upper Menomonee River
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B R O O K F I E L D B R O O K F I E L D C i t y o f C i t y o f
M I L W A U K E E M I L W A U K E E
C i t y o f C i t y o f G L E N D A L E G L E N D A L E
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UPPER MENOMONEE RIVER
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WEST BR A NCH MENOMO N E E RIV E R
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LITTLE MENOMONEE CREEK
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C i t y o f C i t y o f B R O O K F I E L D B R O O K F I E L D
C i t y o f C i t y o f M E Q U O N M E Q U O N
C i t y o f C i t y o f
M I L W A U K E E M I L W A U K E E
C i t y o f C i t y o f W A U W A T O S AW A U W A T O S A
C i t y o f C i t y o f
G L E N D A L E G L E N D A L E
UPPER MENOMONEE RIVER
LOW E R MENOMONEE RIV E R
LI T TL E MENO M O N E E RIVER
UNDERWOOD CREEK
LILLY CREEK
WILLO W C R E EK
BUTLER DITCH
NOR-X-WAY CHANNEL
DOUSMAN DITCH
WEST BR A NCH MENOMO N E E RIV E R
NORTH BRANCH MENOMONEE RIVER
LITTLE MENOMONEE CREEK
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C i t y o f C i t y o f M E Q U O N M E Q U O N
C i t y o f C i t y o f
M I L W A U K E E M I L W A U K E E
C i t y o f C i t y o f W A U W A T O S AW A U W A T O S A
C i t y o f C i t y o f
G L E N D A L E G L E N D A L E
MN-11
MN-9
MN-14
MN-2
MN-5
MN-15
MN-13
MN-4
MN-7
MN-8
MN-3
MN-6
MN-1
MN-10
MN-17
MN-12
MN-8 MN-9
MN-7
MN-6
MN-5
MN-4
MN-3 MN-2
MN-1
MN-16 MN-17
MN-15
MN-14
MN-13
MN-11
MN-12
MN-10
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P io ne er Road
MN-2
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Constituent Measure Standard/Target
Geometric Mean Standard 200 counts/100 ml
Not to Exceed Standard 400 counts/100 ml
Dissolved Oxygen (DO) Minimum Concentration Standard 5 mg/l
Total Suspended Solids (TSS)USGS Median TSS Reference Concentration (estimatedbackground concentration) 17.2 mg/l
Total Phosphorus (TP) Planning Guideline 0.1 mg/l
Flashiness
Richards Baker Flashiness Index (quantifies the frequencyand rapidity of short-term changes in stream flow; the indexranges from 0 - 2, with 0 being constant flow) indicator only
Menomonee River Standards/Targets
Fecal Coliform
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Figure Overall Project
Team AssessmentAnalysis
Dissolved oxygenby flow Good Note that the largest decreases in dissolved oxygen concentrations occur at low flows. This is likely due to a combinationof decreased water agitation and higher temperatures (low flow conditions are often associated with the warm summermonths).
Fecal coliform byflow
Moderate Generally, a pollutant that is present at high concentrations during high flows and low concentrations during low flows(fecal coliform, in this case) is attributed primarily to non-point sources. Note that during any period with high flows,fecal coliform counts exceed the regulatory standard about 50% of the time. During low flows and dry conditions, thestandard is met over 75% of the time. This would be the safest time for any recreational uses (boating, swimming, wading,etc.), although the amount of water in the stream may limit recreational use to wading.
Phosphorus by
flow
Moderate Concentrations of phosphorus are greatest at low flows. This suggests a background source of phosphorus that may beassociated with agricultural drain tile discharge or releases from private onsite wastewater treatment systems (includingagricultural lagoons).
Suspended solidsby flow
Very Good The concentrations of suspended solids increase with increased flows, suggesting contributions from non-point sources.The suspended solids may come from runoff that carries a sediment load, from stream bank erosion, or re-suspendedstream sediments.
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Flashiness Index
Reach DescriptionRichards Baker Flashiness
Index
803 Upper Menomonee River 0.25
Average Daily Flow
Upper Menomonee River (803)
0
20
4060
80
100
120
140160
180
200
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
A V E R A G E D A I L Y F L O W
( C F
S
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Existing Water Quality Data
AssessmentPoint
Water QualityIndicator
Statistic ConditionExisting
Mean (cells per 100 ml) 797Fecal Coliform Bacteria(annual)
Percent compliance with single samplestandard (<400 cells per 100 ml)
75
MN-2Upper Menomonee
River
Geometric mean (cells per 100 ml) 124Days of compliance with geometric mean
standard (<200 cells per 100 ml)262
Mean (cells per 100 ml) 602Fecal Coliform Bacteria(May-September: 153days total) Percent compliance with single sample
standard (<400 cells per 100 ml)86
Geometric mean (cells per 100 ml) 79
Days of compliance with geometric meanstandard (<200 cells per 100 ml)
144
Dissolved Oxygen Mean (mg/l) 9.3
Median (mg/l) 9.1
Percent compliance with dissolved oxygenstandard (>5 mg/l)
100
Total Phosphorus Mean (mg/l) 0.09
Median (mg/l) 0.072
Percent compliance with recommendedphosphorus standard (0.1 mg/l)
70
Total Nitrogen Mean (mg/l) 0.77
Median (mg/l) 0.72
Total Suspended Solids Mean (mg/l) 7.9
Median (mg/l) 5.7
Copper Mean (mg/l) 0.0024
Median (mg/l) 0.0012
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0
40
80
120
160
200
240
280
320
360
400
0 -1
1 -2
2 - 3
3 -4
4 - 5
5 - 6
6 -7
7 - 8
8 - 9
9 -1 0
> 1 0
Average DO (mg/L)
A v e r a g e
N u m
b e r o
f D a y s
P e r
Y e a r
Menomonee River @ Upper Menomonee River (RI 803)
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Menomonee River @ Upper Menomonee River (RI 803)
0
40
80
120
160
200
240
280
320
360
400
0 -4 0 0
4 0 0 - 6 0 0
6 0 0 -1 0 0 0
1 0 0 0 -2 0 0 0
2 0 0 0 - 3 0 0 0
3 0 0 0 -4 0 0 0
4 0 0 0 - 5 0 0 0
> 5 0 0 0
Average Fecal Coliform (#/100ml)
A v e r a g e
N u m
b e r o
f D a y s
P e r
Y e a r
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Menomonee River @ Upper Menomonee River (RI 803 )
0
40
80
120
160
200
240
280
320
360
400
0 - 0 . 0 5
0 . 0 5 - 0 .1
0 .1 - 0 .1 5
0 .1 5 - 0 .2
0 .2 - 0 .2 5
0 .2 5 - 0 . 3
0 . 3 - 0 . 3 5
0 . 3 5 - 0 .4
0 .4 - 0 .4 5
0 .4 5 - 0 . 5
> 0 . 5
Average TP (mg/L)
A v e r a
g e
N u m
b e r o
f D a y s
P e r
Y e
a r
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Menomonee River @ Upper Menomonee River (RI 803)
0
40
80
120
160
200
240
280
320
360
400
0 -2 5
2 5 - 5 0
5 0 -7 5
7 5 -1 0 0
1 0 0 -1 2 5
1 2 5 -1 5 0
1 5 0 -1 7 5
1 7 5 -2 0 0
>2 0 0
Average TSS (mg/L)
A v e r a g e N u m
b e r o
f D a y s
P e r
Y e a r
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1
10
100
0 10 20 30 40 50 60 70 80 90 100
Flow Duration Interval (%)
C o n c e n
t r a
t i o n ( m g / L )
Flow Conditions Regulatory Standard (5 mg/L) Box & Whiskers
Upper Menomonee River – Reach 803Dissolved Oxygen
Modeled Flow Data
Dry C on d iti on s
Lo w F lo ws
M id - ra nge F lo ws
H ig h F lo ws
M o ist C on d iti on s
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1.E+00
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
0 10 20 30 40 50 60 70 80 90 100
Flow Duration Interval (%)
C o n c e n
t r a
t i o n
( c f u / 1 0 0 m
L )
Flow Conditions Regulatory Standard (400 cfu/100 mL) Box & Whiskers
Upper Menomonee River – Reach 803Fecal Coliform
Modeled Flow Data
D ry Con diti on s
Low F lows
M i d -ra n ge F lows
Hig h F lows
Mo ist C on diti ons
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0.01
0.10
1.00
0 10 20 30 40 50 60 70 80 90 100
Flow Duration Interval (%)
C o n c e n
t r a
t i o n ( m g / L )
Flow Conditions Planning Standard (0.1 mg/L) Box & Whiskers
Upper Menomonee River – Reach 803Total Phosphorus
Modeled Flow Data
Dry C on d iti on s
Lo w F lo ws
M id - ra nge F lo ws
H ig h F lo ws
M o ist C on d iti on s
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1
10
100
1000
0 10 20 30 40 50 60 70 80 90 100
Flow Duration Interval (%)
C o n c e n
t r a
t i o n ( m g / L )
Flow Conditions Reference Concentration (17.2 mg/L) Box & Whiskers
Upper Menomonee River – Reach 803Total Suspended Solids
Modeled Flow Data
Dry C on d iti on s
Lo w F lo ws
M id - ra nge F lo ws
H i g h F lo ws
M o ist C on d iti on s