Mn 17 Fact Sheet

8/2/2019 Mn 17 Fact Sheet

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Assessment Point: MN-17

The following data are excerpts from multiple reports. While the same locationMenomonee River watershed is represented, the assessment point IDs differ. Th

the following data, Assessment Point MN-17 is also represented by:

o Reach 908o North 70th Streeto RI-09o Menomonee River Downstream of Honey Creek


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94

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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


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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 C i t y

MI L W AMI L W A U

Ci ty o fCi ty o f

W A UWA T O SAWA UWA TOSA

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


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M E Q U O N M E Q U O N

C i t y C i t y

MI L W AM I L W A U

Ci ty o fCi ty o f

W A UWA T O SAWA UWA TOSA

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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Constituent Measure Standard/Ta

Variance Standard - Geomean not to exceed 1,000 counts/

Variance Standard - Less than 10% of all samples/month 2,000 counts/

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

A

Chloride by flow(Cl not from

models)

Inconclusive (nowinter data)

It is difficult to assess chloride trends without data from thbeing actively applied, some amount is in a reservoir (se

noticeable during mid-to-dry conditions. During higher fl

Dissolved oxygen

by flow

Good Note that the decline in dissolved oxygen occurs at low flagitation and higher temperatures (low flow conditions ar

Fecal coliform by

flow

Moderate to Poor Generally, a pollutant that is present at high concentration(fecal coliform, in this case) is attributed primarily to non

years) would only contribute during the high flows when

any period with the highest flows, fecal coliform counts e

exceed the variance standard over 50% of the time. Durinwould be the safest time for any recreational uses (boating

Phosphorus by

flow

Moderate to Poor Concentrations of phosphorus are greatest at high and lowparticularly noticeable at low flows (perhaps from non-co

at high flows.

Suspended solids

by flow

Good The concentrations of suspended solids increase with incrThe suspended solids may come from runoff that carries a

stream sediments.


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Flashiness Index

Reach Description Richards Baker Flashiness Index

RI-09 North 70th

Street 0.49

Flashiness Index

North 70th Street (908)

0

200

400

600

800

1000

1200

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

AVERA

GEDAILYFLOW(CF

S


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Existing Water Quality Data

AssessmentPoint

Water QualityIndicator

Statistic CondExis

Mean (cells per 100 ml) 6,9Fecal Coliform Bacteria(annual)

Percent compliance with single samplestandard (


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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

Average DO (mg/L)

AverageNu

mberofDaysPerYear

Menomonee River @ N. 70th Street (RI 09)


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Menomonee River @ N. 70th Street (RI

0

40

80

120

160

200

240

280

320

360

400

0-400

400-600

600-1000

1000-2000

2000-3000

Average Fecal Coliform (#/100ml)

AverageNumberofDaysPerYear


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Menomonee River @ N. 70th Street (R

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

Average TP (mg/L)

AverageNumberofDaysPerYear


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Menomonee River @ N. 70th Street (R

0

40

80

120

160

200

240

280

320

360

400

0-25

25-50

50-75

75-100

100-125

125-150

Average TSS (mg/L)

AverageN

umberofDaysPerYear


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1

10

100

1000

0 10 20 30 40 50 6

Flow Duration Interval (%

Concentra

tion(mg/L)

Flow Conditions Acute Toxicity (757 mg/L) Chronic Toxicity (39

North 70th Street (RI-09) RChloride

Modeled Flow Data; Chloride Field Data

Mid-rangeFlows

HighFlows

MoistConditions


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1

10

100

0 10 20 30 40 50 60

Flow Duration Interval (%)

Concentra

tion(mg/L)

Flow Conditions Special Variance Regulatory Standard (2 mg/L)

North 70th Street (RI-09) RDissolved Oxygen

Modeled Flow Data

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


C

oncentratio

n(

cfu/100mL)

Flow Conditions Regulatory Standard- Special Variance (2,000 cfu/1

North 70th Street (RI-09) RFecal Coliform

Modeled Flow Data

Mid-rangeFlows

High

Flows

Moist

Conditions


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0.01

0.10

1.00

0 10 20 30 40 50 6

Flow Duration Interval (%)

Concentra

tion(mg/L)

Flow Conditions Planning Standard (0.1 mg/L)

North 70th Street (RI-09) RTotal Phosphorus

Modeled Flow Data

Mid-rangeFlows

HighFlows

MoistConditions


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1

10

100

1000

0 10 20 30 40 50 6


Concentration(mg/L)

Flow Conditions Reference Concentration (17.2 mg/L)

North 70th Street (RI-09) RTotal Suspended Solid

Modeled Flow Data

Mid-rangeFlows

HighFlows

MoistConditions


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Documents

Mn 17 Fact Sheet