Church (Hillsborough County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°6'12", Longitude 82°35'59"

Period of record: 46 sampling dates; November 17, 1990 to November 30, 1998

Surface area (Shafer et al. 1986): 68 acres / 28 hectacres

Lake Region (Griffith et al. 1997): Keystone 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Supplemental, unpublished water chemistry data, University of Florida.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

6.8

Sulfate (mg/L)

31.8

Total alkalinity (mg/L as CaCO3)

6.7

Calcium (mg/L)

11.0

Conductance (µS/cm @ 25 °C)

182

Magnesium (mg/L)

4.8

Color (Pt-Co units)

13

Sodium (mg/L)

9.5

Chloride (mg/L)

21.0

Potassium (mg/L)

4.5

Silicon (mg/L)

0.4

 

 

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 46 months sampled:

 

Minimum

Average

Maximum

Long-term total phosphorus concentrations (µg/L)

10

15

21

Long-term total nitrogen concentrations (µg/L)

530

640

860

Long-term total chlorophyll concentrations (µg/L)

1.0

4.6

13.3

Long-term Secchi depth (ft)

5.0

8.4

12.4

Florida LAKEWATCH data were not collected in 1999.

Church (Hillsborough County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on May 26, 1992

Percent area covered with aquatic vegetation (PAC, %)

74

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

8

Average emergent plant biomass (kg wet wt/m2)

4.4

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

0.8

Average submersed plant biomass (kg wet wt/m2)

1.6

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

37

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

hydrilla

Hydrilla verticillata

90

bladderwort

Utricularia foliosa

70

fragrant water-lily

Nymphaea odorata

60

torpedograss

Panicum repens

40

water-pennywort

Hydrocotyle umbellata

30

maidencane

Panicum hemitomon

30

spatterdock

Nuphar luteum

10

pickerelweed

Pontederia cordata

10

purple fanwort

Cabomba pulcherrima

10

variableleaf pondweed

Potamogeton diversifolius

10

musk-grass

Chara spp.

10

 

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