Floyd (Pasco County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°11'5", Longitude 82°27'44"

Period of record: 33 sampling dates; October 28, 1990 to August 30, 1994

Surface area : No data available.

Lake Region (Griffith et al. 1997): Land-O-Lakes

Geologic formation (Brooks 1981):

The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation.

Physiographic region (Brooks 1981):

The water body lies in the Land-O-Lakes subdivision of the Tampa Plain division of the Ocala Uplift District. 

Supplemental, unpublished water chemistry data, University of Florida.

Numbers reported below are the average for 2 months sampled:

pH

6.9

Sulfate (mg/L)

7.0

Total alkalinity (mg/L as CaCO3)

29.5

Calcium (mg/L)

10.2

Conductance (µS/cm @ 25 °C)

158

Magnesium (mg/L)

2.5

Color (Pt-Co units)

26

Sodium (mg/L)

15.8

Chloride (mg/L)

26.2

Potassium (mg/L)

2.5

Silicon (mg/L)

0.2

 

 

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 33 months sampled:

 

Minimum

Average

Maximum

Long-term total phosphorus concentrations (µg/L)

8

13

43

Long-term total nitrogen concentrations (µg/L)

650

860

1930

Long-term total chlorophyll concentrations (µg/L)

1.5

4.0

17.5

Long-term Secchi depth (ft)

5.5

7.6

11.5

Florida LAKEWATCH data were not collected in 1999.

Floyd (Pasco County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on May 26, 1992

Percent area covered with aquatic vegetation (PAC, %)

60

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

33

Average emergent plant biomass (kg wet wt/m2)

2.7

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

2.2

Average submersed plant biomass (kg wet wt/m2)

4.5

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

124

Average lake depth (m)

1

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

Common Name

Plant Species

Frequency (%)

slender spikerush

Eleocharis baldwinii

90

fragrant water-lily

Nymphaea odorata

90

pickerelweed

Pontederia cordata

90

Florida bladderwort

Utricularia floridana

80

bladderwort

Utricularia foliosa

80

musk-grass

Chara spp.

70

rush fuirena

Fuirena scirpoidea

70

cat-tail

Typha spp.

60

purple bladderwort

Utricularia purpurea

60

spatterdock

Nuphar luteum

50

buttonbush

Cephalanthus occidentalis

40

water primrose

Ludwigia octovalvis

30

maidencane

Panicum hemitomon

30

banana-lily

Nymphoides aquatica

20

southern cutgrass

Leersia hexandra

20

common salvinia

Salvinia rotundifolia

10

duck-potato

Sagittaria lancifolia

10

bacopa

Bacopa monnieri

10

.

Cyperus elegans

10

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