Sebring (Highlands County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 27°31'38", Longitude 81°29'9"

Period of record: 45 sampling dates; June 19, 1995 to December 18, 1999

Surface area (LAKEWATCH): 508 acres / 206 hectacres

Lake Region (Griffith et al. 1997): Lake Wales Ridge Transition

Geologic formation (Brooks 1981):

The geology is dominated by deeply weathered beach and dune sand with some clay lenses of the preglacial Pleistocene.

Physiographic region (Brooks 1981):

The water body lies in the Eastern Complex of the Central Ridge subdivision of the Lake Wales Ridge division of the Central Lake District.

Supplemental, unpublished water chemistry data, University of Florida.

Numbers reported below are the average for 5 months sampled:

pH

5.9

Sulfate (mg/L)

10.4

Total alkalinity (mg/L as CaCO3)

2.3

Calcium (mg/L)

3.2

Conductance (µS/cm @ 25 °C)

69

Magnesium (mg/L)

4.8

Color (Pt-Co units)

121

Sodium (mg/L)

6.0

Chloride (mg/L)

12.4

Potassium (mg/L)

1.2

Silicon (mg/L)

1.4

 

 

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 45 months sampled:

 

Minimum

Average

Maximum

Long-term total phosphorus concentrations (µg/L)

22

47

78

Long-term total nitrogen concentrations (µg/L)

450

650

1000

Long-term total chlorophyll concentrations (µg/L)

5.0

13.2

40.3

Long-term Secchi depth (ft)

1.1

2.2

4.0

1999 Florida LAKEWATCH Data

Numbers reported below are monthly averages calculated from 3 stations for total phosphorus (TP, µg/L), total nitrogen (TN, µg/L), chlorophyll (CHL, µg/L) and Secchi depth (SECCHI, ft) during 1999:

Date

TP (µg/L)

TN (µg/L)

CHL (µg/L)

SECCHI (ft

Jan-15-99

49

590

8.7

2.1

Feb-15-99

44

670

10.3

2.1

Mar-15-99

44

610

12.0

2.5

Apr-18-99

48

640

5.0

1.9

May-16-99

45

700

8.3

1.7

Jun-16-99

33

500

7.7

3.5

Jul-14-99

29

480

9.7

2.8

Aug-18-99

32

710

27.7

2.0

Sep-15-99

35

760

40.3

2.3

Oct-18-99

54

840

11.0

1.5

Nov-14-99

58

1000

7.0

1.8

Dec-18-99

66

900

5.7

1.1

 

 

 

 

 

1999 Average

45

700

12.8

2.1

 

Sebring (Highlands County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on July 24, 1996

Percent area covered with aquatic vegetation (PAC, %)

24

Percent of lake's volume filled with vegetation (PVI, %)

7

Average emergent plant biomass (kg wet wt/m2)

3.3

Average floating-leaved plant biomass (kg wet wt/m2)

0.1

Average submersed plant biomass (kg wet wt/m2)

0.7

Average width of emergent and floating-leaved zone (ft.)

103

Average lake depth (m)

2

 

Frequency that plant species occur in 10 evenly spaced transects around the lake.

Common Name

Plant Species

Frequency (%)

cat-tail

Typha spp.

90

maidencane

Panicum hemitomon

90

water primrose

Ludwigia octovalvis

80

slender spikerush

Eleocharis baldwinii

70

wax myrtle

Myrica cerifera

70

smartweed

Polygonum hydropiperoides

60

common salvinia

Salvinia rotundifolia

50

pickerelweed

Pontederia cordata

50

red root

Lachnanthes caroliniana

50

common duckweed

Lemna minor

40

baby-tears

Micranthemum umbrosum

40

willow

Salix spp.

40

Baldwin flat sedge

Cyperus globulosus

40

floating water-hyacinth

Eichhornia crassipes

30

cone-spur bladderwort

Utricularia gibba

30

stonewort

Nitella spp.

30

rush fuirena

Fuirena scirpoidea

30

water-pennywort

Hydrocotyle umbellata

20

melaleuca

Melaleuca quinquenervia

20

spatterdock

Nuphar luteum

10

bacopa

Bacopa monnieri

10

para grass

Brachiaria mutica

10

torpedograss

Panicum repens

10

musk-grass

Chara spp.

10

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