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8/2/2019 Mn 18 Fact Sheet
1/24
8/2/2019 Mn 18 Fact Sheet
2/24
Assessment Point: MN-18
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-18 is also represented by:
o Reach 919o RI-10o Falk Damo Menomonee River Near Upstream Limit of Estuary
8/2/2019 Mn 18 Fact Sheet
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94
43
43
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43
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tu41
tu
45
tu41
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tu18
tu45
tu41tu18
tu45
tu41C 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 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
City ofCity of
CED A RBUR GCE DA RBURG
C it y ofC i t y o f
WAU WA TOS AWAU WAT OS A
C it y ofC i t y o f
ME QUO NM EQ UO N
UPPER MENOMONEE RIVER
LOWER MENOMONEE RIVER
LITTLEMENOMONEERIVER
UNDERWOOD CREEK
LILLY CREEK
WILLOWCREEK
BUTLER DITCH
NOR-X-WAY CHANNEL
DOUSMAN DITCH
WEST BRANCH MENOMONEERIVER
NORTH BRANCH MENOMONEE RIVER
LITTLE MENOMONEE CREEK
8/2/2019 Mn 18 Fact Sheet
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43
43
43
43
tu45
tu41
tu45
tu41
tu45
tu18
tu45
tu41tu18
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?@145
?@74
?@175
?@74
?@74
?@190
?@190
?@164
?@74
?@190
?@100
?@175
?@175
?@145
?@145
?@167
?@145
?@167
?@57
?@32
?@167
?@57?@181
?@181
?@57
?@100
?@100
?@190
?@181
?@145
?@57
?@57
?@100
?@181
?@100?@32
?@57
?@32
?@145
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MILWAUKE
E
LILLY
DIT
CH
PIGEON
NOR
-X-WAY
SUS
SEX
DOUSMAN
UNDER
WOOD
CREEK
CRE
EK
CREEK
RIVER
RIV
ER
CREE
K
CR
EEK
LITTLE
MENOMONEE
MENOMONEE
RIVER
MENOM
ONEE
PIT
LAKE
FISH
INDIA
N
WH
LINCOLN
BARK
W.
CREEK
CHANNEL
AMY
BELL
LAKE
CREEK
MENOMONEE
PEWA
UKEE
RIVER
BARK
RIVER
MENOMON
EE
RIV
ER
BR.
WILLOW
RIVER
FOX
CR.
LAKE
LAC
du
COURS
MENOMONEE
MENOM
ON
EE
LITTL
E
RIV
ER
CREEK
BR.
RI
VER
RIVER
N.
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
MI L W A U K E E MI L W A U K E E
Ci ty o fCi ty o f
W A UWA T O SAWA UWA TOSA
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
LOWER MENOMONEE RIVER
LITTLEMENOMONEERIVER
UNDERWOOD CREEK
LILLY CREEK
WILLOWCREEK
BUTLER DITCH
NOR-X-WAY CHANNEL
DOUSMAN DITCH
WEST BRANCH MENOMONEERIVER
NORTH BRANCH MENOMONEE RIVER
LITTLE MENOMONEE CREEK
8/2/2019 Mn 18 Fact Sheet
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!
!!
!
!
!
!
!
!
!
!!
!
!
!!!
94
43
43
43
43
tu45
tu41
tu45
tu41
tu45
tu18
tu45
tu41tu18
tu45
tu41C 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
MI L W A U K E E M I L W A U K E E
Ci ty o fCi ty o f
W A UWA T O SAWA UWA TOSA
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-8MN-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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!
!
!
!
Ci t y ofCit y o f
M IL W A UKE EM IL W A U KE E
ofofA TOSATOSA
Fon
Bluemound Rd.
76th
S
MN-18
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!
!
!
!
Ci t y ofCit y o f
M IL W A UKE EM IL W A U KE E
ofofA TOSATOSA
Fon
Bluemound Rd.
76th
S
MN-18
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Constituent Measure Standard/Target
Variance Standard - Geomean not to exceed 1,000 counts/100 ml
Variance Standard - Less than 10% of all samples/month 2,000 counts/100 ml
Dissolved Oxygen (DO) Variance Standard - Minimum Concentration 2 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 - Variance Standards/Targets
Fecal Coliform
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Figure Overall Project
Team Assessment
Analysis
Dissolved oxygenby flow
Good Note the decline in dissolved oxygen concentrations during low flows. This is likely due to a combination of decreasedwater agitation and higher temperatures (low flow conditions are often associated with warm summer months).
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. The infrequent sewer overflows (once every 2-5
years) would only contribute during the high flows when substantial non-point loads are already present. Note that during
any period with the highest flows, fecal coliform counts exceed the regulatory variance standard. During moist conditions,
the counts are above the variance standard over 50% of the time. During low flows, the variance standard is met all of the
time. This would be the safest time for any recreational uses (boating, swimming, wading, etc.).
Phosphorus by
flow
Moderate to Poor Concentrations of phosphorus are greatest at high and low flows, although concentrations are frequently greater than the
planning guideline under all flow conditions. The higher concentrations at flow extremes suggests a background source ofphosphorus that is particularly noticeable at low flows (perhaps due to inputs of non-contact cooling water) as well as non-
point sources of phosphorus at high flows.
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.
8/2/2019 Mn 18 Fact Sheet
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Flashiness Index
Reach Description Richards Baker Flashiness Index
RI-10 Falk Dam 0.49
Flashiness Index
Falk Dam (919)
0
200
400
600
800
1000
1200
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
AVERA
GEDAILYFLOW(CF
S
8/2/2019 Mn 18 Fact Sheet
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Existing Water Quality Data
AssessmentPoint
Water QualityIndicator
Statistic ConditionExisting
Mean (cells per 100 ml) 6,889Fecal Coliform Bacteria(annual)
Percent compliance with single samplestandard (
8/2/2019 Mn 18 Fact Sheet
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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
9-10
>10
Average DO (mg/L)
AverageNu
mberofDaysPerYear
Menomonee River @ Falk Dam (RI 10)
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Menomonee River @ Falk Dam (RI 10)
0
40
80
120
160
200
240
280
320
360
400
0-400
400-600
600-1000
1000-2000
2000-3000
3000-4000
4000-5000
>5000
Average Fecal Coliform (#/100ml)
AverageNumberofDaysPerYear
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Menomonee River @ Falk Dam (RI 10)
0
40
80
120
160
200
240
280
320
360
400
0-0.05
0.05-0.1
0.1-0.15
0.15-0.2
0.2-0.25
0.25-0.3
0.3-0.35
0.35-0.4
0.4-0.45
0.45-0.5
>0.5
AverageTP (mg/L)
Avera
geNumberofDaysPerYe
ar
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Menomonee River @ Falk Dam (RI 10)
0
40
80
120
160
200
240
280
320
360
400
0-25
25-50
50-75
75-100
100-125
125-150
150-175
175-200
>200
Average TSS (mg/L)
AverageN
umberofDaysPerYear
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1
10
100
0 10 20 30 40 50 60 70 80 90 100
Flow Duration Interval (%)
Concentra
tion(mg/L)
Flow Conditions Special Variance Regulatory Standard (2 mg/L) Box & Whiskers
Falk Dam (RI-10) Reach 919Dissolved Oxygen
Modeled Flow Data
DryConditions
LowFlows
Mid-rangeFlows
HighFlows
MoistConditions
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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
oncentratio
n(
cfu/100mL)
Flow Conditions Regulatory Standard- Special Variance (2,000 cfu/100 mL) Box & Whiskers
Falk Dam (RI-10) Reach 919Fecal Coliform
Modeled Flow Data
Dry
Conditions
Low
Flows
Mid-rangeFlows
HighFlows
MoistConditions
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0.01
0.10
1.00
0 10 20 30 40 50 60 70 80 90 100
Flow Duration Interval (%)
Concentra
tion(mg/L)
Flow Conditions Planning Standard (0.1 mg/L) Box & Whiskers
Falk Dam (RI-10) Reach 919Total Phosphorus
Modeled Flow Data
DryConditions
LowFlows
Mid-rangeFlows
HighFlows
MoistConditions
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1
10
100
1000
0 10 20 30 40 50 60 70 80 90 100
Flow Duration Interval (%)
Concentra
tion(mg/L)
Flow Conditions Reference Concentration (17.2 mg/L) Box & Whiskers
Falk Dam (RI-10) Reach 919Total Suspended Solids
Modeled Flow Data
DryConditions
LowFlows
Mid-rangeFlows
HighFlows
MoistConditions