WATER QUALITY MONITORING PROJECT FOR DEMONSTRATION OF CANAL REMEDIATION METHODS

FLORIDA KEYS Report #1: Canal Water Characterization

FKNMS Canal Subcommittee Meeting01/16/2015

Henry O. Briceño & Alexandra Serna

Southeast Environmental Research CenterFlorida International University

Miami, FL 33199

Phase 1Characterization of canal waters before remediation

Phase 2Monitoring water quality changes after remediation.

SELECTED CANALS FOR REMEDIATION AND CONTROLControl canals highlighted in yellow

Organic Removal

Weed Barrier & Organic Removal

Pumping Backfilling

#137 Plantation Key Treasure Harbor

#148 Lower Matecumbe Key Mate-Lido Beach

#287 Big Pine Hollerich Subdivision

#290 Big Pine Between Ave I & J

#266 Big Pine. Dr Arm Subdivision

#278 Big Pine. Eden Pines Colony Subdivision

#277 Big Pine. Tropical Bay Subdivision

#459 Geiger. Boca Chica Ocean Shores Subdivision

#29 Key Largo Sexton Cove Estates Subdivision

#472 Geiger. Geiger Mobile Homes Subdivision

#132 Plantation Key

#147 Matecumbe K

#282 Big Pine #458 Geiger # 28 Key Largo

Culvert Installation

#293 Big Pine

Weed Barrier

Reduction of weed wrack

loading

Installation of culverts and/or

pumps

Removal of accumulated

organic sediments

Backfilling of canalsACTION

Reduction of Organic

Matter Load

Increase Water

Exchange and Flushing

Reduce Bottom Water

Hypoxia

Reduce Excessive Depth to Improve

Circulation

Reduction Benthic Flux

Higher Seawater

Contribution

Bacterial Population

H2S Reduction

DOM & POMNutrient

Load

Mixing Rate

Stratification

Benthic Community

GOAL

PRO

BABL

E CH

AN

GES

TOC DOH2S

pH

N & PqPCR SAL TURINDEX

Algae Bloom

PROFILESDEPTH KdTEMP SALDO H2SCHLa TUR pH DOM

KdDOM

CHLa

CDOM Parafax

PAM

BEN

THIC

CO

MM

UN

ITY

SURV

EYS

FieldLab

Legend

CONCEPTUAL MODEL FOR MONITORING DESIGN

02468

1012141618

0 0.5 1 1.5 2 2.5

Dept

h (ft

)

Oxygen (mg/L)

02468

1012141618

0 400 800 1200 1600 2000

Dept

h (ft

)

PAR/ Irradiance

02468

1012141618

37.0 37.5 38.0 38.5

Dept

h (ft

)

Salinity (PSU)

02468

1012141618

23.0 23.5 24.0 24.5 25.0 25.5

Dept

h (ft

)

Temperature ᴼC

02468

1012141618

34.0 38.0 42.0 46.0 50.0 54.0 58.0 62.0

Dept

h (ft

)CDOM (mg/m3)

02468

1012141618

0 5 10 15 20 25 30

Dept

h (ft

)

%DO Saturation

0%

12%

24%

36%

48%

60%

72%

84%

96%

108%

% Exceedances of %DO Saturation

0.000

0.010

0.020

0.030

0.040

0.050

0.06002

8A -

B02

8A -

S02

9A -

B02

9A -

S02

9B -

B02

9B -

S13

2A -

B13

2A -

S13

7A -

B13

7A -

S13

7B -

B13

7B -

S14

7A -

B14

7A -

S14

8A -

B14

8A -

S14

8B -

B14

8B -

S26

6A -

B26

6A -

S26

6B -

B26

6B -

S27

7A -

B27

7A -

S27

7B -

B27

7B -

S27

8A -

B27

8A -

S27

8B -

B27

8B -

S28

2A -

B28

2A -

S28

7A -

B28

7A -

S29

0A -

B29

0A -

S29

0B -

B29

0B -

S29

3A -

B29

3A -

S45

8A -

B45

8A -

S45

9A -

B45

9A -

S45

9B -

B45

9B -

S47

2A -

B47

2A -

S47

2B -

B47

2B -

S

FKC01 NO3-N(ppm)

0.000

0.020

0.040

0.060

0.080

0.100

0.120

028A

-B

028A

-S

029A

-B

029A

-S

132A

-B

132A

-S

132B

S

132B

-B

137A

-B

137A

-S

137B

S

137B

-B

147A

-B

147A

-S

148A

-B

148A

-S

266A

-B

266A

-S

277A

-B

277A

-S

278A

-B

278A

-S

278B

S

278B

-B

282A

-B

282A

-S

287A

-B

287A

-S

290A

-B

290A

-S

293A

-B

293A

-S

458A

-B

458A

-S

459A

-B

459A

-S

472A

-B

472A

-S

FKC02 NO3-N(ppm)

0.00

0.02

0.04

0.06

0.08

0.10

0.12

028A

- B

028A

- S

029A

- B

029A

- S

132A

- B

132A

- S

137A

- B

137A

- S

147A

- B

147A

- S

148A

- B

148A

- S

266A

- B

266A

- S

277A

- B

277A

- S

278A

- B

278A

- S

282A

- B

282A

- S

287A

- B

287A

- S

290A

- B

290A

- S

293A

- B

293A

- S

458A

- B

458A

- S

459A

- B

459A

- S

472A

- B

472A

- S

472B

- B

472B

- S

NO3-N(ppm) NO3-N(ppm)

WQ Samples DIEL Profiles EC DO384 288 414 288 41,886

76 64 92 94 17,636

20% 22% 22% 33% 42%

Proposed Work

Done

Phase 1Characterization of canal waters before remediation

IS DONE

Phase 2Monitoring water quality changes after remediation.

TO BE DONE

Strategies

- Monitoring will begin in remediated canals six month after remediation and will be performed quarterly.

- Non remediated canals will be monitored at least once per year