Woodward (Lake County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°49'22", Longitude 81°40'33"

Period of record: 37 sampling dates; December 8, 1989 to October 25, 1993

Surface area : 90 acres / 36 hectacres

Lake Region (Griffith et al. 1997): Mount Dora Ridge

Geologic formation (Brooks 1981):

The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation.

Physiographic region (Brooks 1981):

The water body lies in the Central Lakes division of the Central Lake District.

 

Supplemental, unpublished water chemistry data, University of Florida.

Numbers reported below are the average for 2 months sampled:

pH

7.0

Sulfate (mg/L)

31.0

Total alkalinity (mg/L as CaCO3)

18.8

Calcium (mg/L)

12.8

Conductance (µS/cm @ 25 °C)

178

Magnesium (mg/L)

4.2

Color (Pt-Co units)

7

Sodium (mg/L)

10.0

Chloride (mg/L)

16.5

Potassium (mg/L)

6.8

Silicon (mg/L)

0.5

 

 

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 37 months sampled:

 

Minimum

Average

Maximum

Long-term total phosphorus concentrations (µg/L)

3

10

15

Long-term total nitrogen concentrations (µg/L)

350

500

810

Long-term total chlorophyll concentrations (µg/L)

2.0

5.9

21.7

Long-term Secchi depth (ft)

5.7

8.2

11.7

Florida LAKEWATCH data were not collected in 1999.

Woodward (Lake County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 2, 1992

Percent area covered with aquatic vegetation (PAC, %)

10

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

1

Average emergent plant biomass (kg wet wt/m2)

4.2

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

0.8

Average submersed plant biomass (kg wet wt/m2)

0.2

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

24

Average lake depth (m)

6

 

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

Common Name

Plant Species

Frequency (%)

cat-tail

Typha spp.

60

maidencane

Panicum hemitomon

60

water primrose

Ludwigia octovalvis

50

willow

Salix spp.

50

red ludwigia

Ludwigia repens

40

buttonbush

Cephalanthus occidentalis

40

duck-potato

Sagittaria lancifolia

30

spatterdock

Nuphar luteum

30

torpedograss

Panicum repens

30

rush fuirena

Fuirena scirpoidea

30

slender spikerush

Eleocharis baldwinii

20

fragrant water-lily

Nymphaea odorata

20

pickerelweed

Pontederia cordata

20

red root

Lachnanthes caroliniana

20

water-pennywort

Hydrocotyle umbellata

10

cone-spur bladderwort

Utricularia gibba

10

sawgrass

Cladium jamaicense

10

flat-sedge

Cyperus odoratus

10

soft rush

Juncus effusus

10

musk-grass

Chara spp.

10

pipewort

Eriocaulon spp.

10

jointed flat sedge

Cyperus haspan

10

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