Mn 7 Fact Sheet
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Transcript of Mn 7 Fact Sheet
8/2/2019 Mn 7 Fact Sheet
http://slidepdf.com/reader/full/mn-7-fact-sheet 1/24
8/2/2019 Mn 7 Fact Sheet
http://slidepdf.com/reader/full/mn-7-fact-sheet 2/24
Assessment Point: MN-7
The following data are excerpts from multiple reports. While the same location in theMenomonee River watershed is represented, the assessment point IDs differ. Throughout
the following data, Assessment Point MN-7 is also represented by:
o Reach 841
o Lilly Creek
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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
C i t y o f C i t y o f
C ED A R B UR G CE D A R B U R G
C it y of C i t y o f
W AU W A T OS AW AU W AT OS A
C it y of C i t y o f
ME Q UO N M EQ UO N
UPPER MENOMONEE RIVER
LOW E R MENOMONEE RIV E R
LI T TLE 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 ANCH MENOMO N E E RIV E R
NORTH BRANCH MENOMONEE RIVER
LITTLE MENOMONEE CREEK
8/2/2019 Mn 7 Fact Sheet
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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 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 TLE 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 ANCH 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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Main St.
MN-7
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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 (estimated
background 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 index
ranges from 0 - 2, with 0 being constant flow) indicator only
Menomonee River Standards/Targets
Fecal Coliform
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Figure Overall Project
Team Assessment
Analysis
Dissolved oxygenby flow
Moderate Note the decline of dissolved oxygen concentrations during low flows; the standard is met only half of the time. This islikely due to a combination of decreased water agitation and higher temperatures (low flow conditions are often associated
with the warm summer months). This is somewhat natural, but may be exacerbated by human-caused alterations of the
stream and watershed.
Fecal coliform by
flow
Moderate to Poor 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 periods with the highest flows,
fecal coliform counts exceed the regulatory standard more 75% of the time. During dry conditions and low flows, the
standard is met more than 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
Good Concentrations of phosphorus are highest at high flows. This suggests that the phosphorus inputs are primarily non-point
sources. Much of the phosphorus is likely sediment-associated, particularly under moist conditions. Note the similarities
between the phosphorus and suspended solids data.
Suspended solids
by flow
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-suspended
stream sediments.
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Flashiness Index
Reach Description Richards Baker Flashiness Index
841 Lilly Creek 0.69
Average Daily Flow
Lilly Creek (841)
0
20
40
60
80
100
120
140
160
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) 2,427Fecal Coliform Bacteria(annual)
Percent compliance with single samplestandard (<400 cells per 100 ml)
69
MN-7Lilly Creek
Geometric mean (cells per 100 ml) 359
Days of compliance with geometric meanstandard (<200 cells per 100 ml)
89
Mean (cells per 100 ml) 1,416Fecal Coliform Bacteria(May-September: 153days total) Percent compliance with single sample
standard (<400 cells per 100 ml)81
Geometric mean (cells per 100 ml) 265
Days of compliance with geometric meanstandard (<200 cells per 100 ml)
38
Dissolved Oxygen Mean (mg/l) 9.3
Median (mg/l) 9.3
Percent compliance with dissolved oxygenstandard (>5 mg/l)
92
Total Phosphorus Mean (mg/l) 0.063
Median (mg/l) 0.040
Percent compliance with recommendedphosphorus standard (0.1 mg/l)
85
Total Nitrogen Mean (mg/l) 0.74
Median (mg/l) 0.67
Total Suspended Solids Mean (mg/l) 19.0
Median (mg/l) 7.9
Copper Mean (mg/l) 0.0051
Median (mg/l) 0.0013
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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 @ Lilly Creek (RI 841)
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Menomonee River @ Lilly Creek (RI 841)
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 @ Lilly Creek (RI 841)
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 @ Lilly Creek (RI 841)
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
Lilly Creek – Reach 841Dissolved Oxygen
Modeled Flow Data
D ry C on d iti on s
Low F lo ws
M id - ra nge F lo ws
Hig h F lo ws
Mo ist C on d iti ons
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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
Lilly Creek – Reach 841Fecal Coliform
Modeled Flow Data
D ry C on diti on s
Low F lows
Mid - ra n ge F lows
H ig h F lows
M o ist Con diti on s
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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
Lilly Creek – Reach 841Total Phosphorus
Modeled Flow Data
D ry C on d iti on s
Low F lo ws
M id - ra nge F lo ws
Hig h F lo ws
Mo ist C on d iti ons
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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
Lilly Creek – Reach 841Total Suspended Solids
Modeled Flow Data
D ry C on d iti on s
Low F lo ws
M id - ra nge F lo ws
Hig h F lo ws
Mo ist C on d iti ons