Silver (Lake County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°50'3", Longitude 81°48'6"

Period of record: 5 sampling dates; January 30, 1991 to July 29, 1991

Surface area (Shafer et al. 1986): 388 acres / 157 hectacres

Lake Region (Griffith et al. 1997): Central Valley

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Supplemental, unpublished water chemistry data, University of Florida.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

8.1

Sulfate (mg/L)

35.8

Total alkalinity (mg/L as CaCO3)

113.5

Calcium (mg/L)

33.2

Conductance (µS/cm @ 25 °C)

590

Magnesium (mg/L)

17.3

Color (Pt-Co units)

10

Sodium (mg/L)

55.8

Chloride (mg/L)

97.8

Potassium (mg/L)

7.2

Silicon (mg/L)

5.9

 

 

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 5 months sampled:

 

Minimum

Average

Maximum

Long-term total phosphorus concentrations (µg/L)

10

17

23

Long-term total nitrogen concentrations (µg/L)

1370

2230

3500

Long-term total chlorophyll concentrations (µg/L)

1.0

5.5

8.7

Long-term Secchi depth (ft)

5.0

5.7

6.2

Florida LAKEWATCH data were not collected in 1999.

 

Silver (Lake County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 2, 1992

Percent area covered with aquatic vegetation (PAC, %)

56

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

13

Average emergent plant biomass (kg wet wt/m2)

1.7

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

0.4

Average submersed plant biomass (kg wet wt/m2)

1.4

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

202

Average lake depth (m)

1

 

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

Common Name

Plant Species

Frequency (%)

duck-potato

Sagittaria lancifolia

50

cat-tail

Typha spp.

50

tapegrass

Vallisneria americana

50

maidencane

Panicum hemitomon

50

rush fuirena

Fuirena scirpoidea

50

fragrant water-lily

Nymphaea odorata

40

lemon bacopa

Bacopa caroliniana

40

water-pennywort

Hydrocotyle umbellata

40

Illinois pondweed

Potamogeton illinoensis

30

white-top sedge

Dichromena colorata

30

torpedograss

Panicum repens

20

red root

Lachnanthes caroliniana

20

knot grass

Paspalum distichum

20

red ludwigia

Ludwigia repens

10

dwarf arrowhead

Sagittaria subulata

10

purple bladderwort

Utricularia purpurea

10

water primrose

Ludwigia octovalvis

10

willow

Salix spp.

10

sawgrass

Cladium jamaicense

10

giant bulrush

Scirpus californicus

10

bladderwort

Utricularia foliosa

10

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