Water Quality of Black Hawk Creek and an Agricultural Run-Off

Water Quality of Black Hawk Creek and an

Agricultural Run-Off

CHRIS BRITT and AMINUL HAQUE

GROUP-02

Study Area

Site Description

Blac

k Ha

wk

Cree

k

Agricultural Run-off

Continued…..

Continued…..

Black Hawk Creek

Agricultural Run-off

Objectives CONDUCT GROUP PROJECT WATER QUALITY ANALYSIS OF BLACK HAWK CREEK VARIATION OF WATER QUALITY OVER TIME CONTRIBUTION OF AGRICULTURAL RUN-OFF INTO

BLACK HAWK CREEK DETERMINATION OF WATER QUALITY INDEX

(WQI)

Field MethodsInstrument Used in Field

Field MethodsOn Site Measurement

Lab Methods

Lab Methods

Water Quality

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

2

4

6

8

10

12

14

16

18

20Dissolved Oxygen

Site-1

Site-2

Site-3

Septembe-November

DO in

mg/

L

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

2

4

6

8

10Biochemical Oxygen Demand

Site-1

Site-2

Site-3

Septembe-November

BOD

in m

g/L

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

2

4

6

8

10

12

14

16

18

20Temparature

Site-1Site-2Site-3

Septembe-November

Tem

para

ture

in º

C

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

5

10

15

20

25

30

35 Turbidity

Site-1Site-2Site-3

Septembe-November

Turb

idity

in N

TU

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

5

10

15

20

25 Total Suspended Sediments

Site-1

Site-2

Site-3

Septembe-November

TSS

in m

g/L

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

100

200

300

400

500

600

700

800

900

1000 Total Dissolved Solids

Site-1

Site-2

Site-3

Septembe-November

TDS

in m

g/L

Water Quality

Water Quality

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

5

10

15

20

25

30 Nitrate

Site-1Site-2Site-3

Septembe-November

Nitr

ate

in m

g/L

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

100

200

300

400

500

600

700

800

900

1000Escherichia-Coli

Site-1

Site-2

Site-3

Septembe-November

E-Co

li in

cfu

/100

ml

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

2

4

6

8

10Biochemical Oxygen Demand

Site-1

Site-2

Site-3

Septembe-November

BOD

in m

g/L

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

20

40

60

80

100

120

140

160

180

200Chloride

Site-1Site-2Site-3

Septembe-November

Chlo

ride

in m

g/L

Water Quality

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

100

200

300

400

500

600

700

800

900

1000 Total Dissolved Solids

Site-1

Site-2

Site-3

Septembe-November

TDS

in m

g/L

Week-1 Week-2 Week-3 Week-4 Week-5 Week-60

5

10

15

20

25

30 Nitrate

Site-1Site-2Site-3

Septembe-November

Nitr

ate

in m

g/L

Water Quality Index

50

70

90

Site-2 Site-2 Site-2 Site-2 Site-2 Site-2

Water Quality Index

Site-1

Site-2

Site-3

Septembe-November

Medium

Excellent

Good

Contribution of Ag. Run-off

BOD concentration increases after rain.High E-coli concentrationHigh TDSChloride and Sulfate

Conclusion Dissolved Oxygen Concentration is good for

Aquatic life.BOD increases after rain.TSS varies over time.High E-coli concentration due to rain and

construction work.Agricultural run-off contributes chloride and

Sulfate.Overall WQI is Good.

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