McCoy (Highlands County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 27°17'3", Longitude 81°21'15"

Period of record: 23 sampling dates; June 4, 1996 to July 31, 1999

Surface area (LAKEWATCH): 40 acres / 16 hectacres     Bathymetric Map

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

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Supplemental, unpublished water chemistry data, University of Florida.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 2 months sampled:
 
pH
7.7
Sulfate (mg/L)
22.0
Total alkalinity (mg/L as CaCO3)
22.0
Calcium (mg/L)
12.3
Conductance (µS/cm @ 25 °C)
187
Magnesium (mg/L)
5.5
Color (Pt-Co units)
2
Sodium (mg/L)
7.5
Chloride (mg/L)
19.4
Potassium (mg/L)
6.5
Silicon (mg/L)
0.5
   

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 23 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
3
4
8
Long-term total nitrogen concentrations (µg/L)
520
790
980
Long-term total chlorophyll concentrations (µg/L)
1.0
1.8
3.3
Long-term Secchi depth (ft)
10.2
16.7
21.8

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
Mar-27-99
4
920
1.0
18.3
Apr-22-99
8
820
1.0
15.0
Jun-05-99
4
970
1.0
18.7
Jul-31-99
5
770
2.0
15.8
         
1999 Average
5
870
1.2
17.0

McCoy (Highlands County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on August 7, 1996

Percent area covered with aquatic vegetation (PAC, %)
27
Percent of lake's volume filled with vegetation (PVI, %)
3
Average emergent plant biomass (kg wet wt/m2)
4.1
Average floating-leaved plant biomass (kg wet wt/m2)
0.5
Average submersed plant biomass (kg wet wt/m2)
2.7
Average width of emergent and floating-leaved zone (ft.)
51
Average lake depth (m)
8

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

Common Name Plant Species
Frequency (%)
respuinata bladderwort Utricularia resupinata
100
torpedograss Panicum repens
90
duck-potato Sagittaria lancifolia
70
water primrose Ludwigia octovalvis
70
water-pennywort Hydrocotyle umbellata
60
slender spikerush Eleocharis baldwinii
50
melaleuca Melaleuca quinquenervia
50
maidencane Panicum hemitomon
50
musk-grass Chara spp.
50
rush fuirena Fuirena scirpoidea
50
cat-tail Typha spp.
40
water spinach Ipomoea aquatica
30
pickerelweed Pontederia cordata
30
Brazilian pepper Schinus terebinthifolius
30
buttonbush Cephalanthus occidentalis
30
alligator-weed Alternanthera philoxeroides
10
lemon bacopa Bacopa caroliniana
10
baby-tears Micranthemum umbrosum
10
dwarf arrowhead Sagittaria subulata
10
southern naiad Najas guadalupensis
10
wax myrtle Myrica cerifera
10
sawgrass Cladium jamaicense
10
flat-sedge Cyperus odoratus
10
southern cutgrass Leersia hexandra
10
jointed flat sedge Cyperus haspan
10

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