Conway South (Orange County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°27'32", Longitude 81°20'52"

Period of record: 42 sampling dates; July 27, 1992 to June 22, 1998

Surface area (LAKEWATCH): 870 acres / 352 hectacres

Lake Region (Griffith et al. 1997): Orlando Ridge

Geologic formation (Brooks 1981):

The geology is dominated by phosphatic sand, silty sand, and clay of the Hawthorne Formation.

Physiographic region (Brooks 1981):

The water body lies in the Orlando Promontory 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Supplemental, unpublished water chemistry data, University of Florida.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
7.9
 Sulfate (mg/L)
27.7
Total alkalinity (mg/L as CaCO3)
29.0
 Conductance (µS/cm @ 25 °C)
228
Color (Pt-Co units)
6
 Chloride (mg/L)
30.2

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 42 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
7
10
15
Long-term total nitrogen concentrations (µg/L)
260
400
770
Long-term total chlorophyll concentrations (µg/L)
1.0
6.4
25.3
Long-term Secchi depth (ft)
4.6
12.1
21.2

Florida LAKEWATCH data were not collected in 1999.


Conway South (Orange County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 8, 1993


 
Percent area covered with aquatic vegetation (PAC, %)
46
Percent of lake's volume filled with vegetation (PVI, %)
4
Average emergent plant biomass (kg wet wt/m2)
5.8
Average floating-leaved plant biomass (kg wet wt/m2)
4.6
Average submersed plant biomass (kg wet wt/m2)
1.1
Average width of emergent and floating-leaved zone (ft.)
82
Average lake depth (m)
5

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

Common Name Plant Species
Frequency (%)
Illinois pondweed Potamogeton illinoensis
100
torpedograss Panicum repens
80
duck-potato Sagittaria lancifolia
70
cat-tail Typha spp.
70
water primrose Ludwigia octovalvis
70
water-pennywort Hydrocotyle umbellata
50
tapegrass Vallisneria americana
50
green fanwort Cabomba caroliniana var. multipartita
50
willow Salix spp.
50
green algae Chlorphyta
50
floating water-hyacinth Eichhornia crassipes
40
pickerelweed Pontederia cordata
40
elephant-ear Colocasia esculenta
40
elderberry Sambucus canadensis
40
fragrant water-lily Nymphaea odorata
30
maidencane Panicum hemitomon
30
alligator-weed Alternanthera philoxeroides
20
spatterdock Nuphar luteum
20
coontail Ceratophyllum demersum
20
soft rush Juncus effusus
20
rush fuirena Fuirena scirpoidea
20
water-lettuce Pistia stratiotes
10
common salvinia Salvinia rotundifolia
10
red ludwigia Ludwigia repens
10
baby-tears Micranthemum umbrosum
10
dwarf arrowhead Sagittaria subulata
10
Australian pine Casuarina equisetifolia
10
salt-bush Baccharis spp.
10
wax myrtle Myrica cerifera
10
melaleuca Melaleuca quinquenervia
10
bald cypress Taxodium distichum
10
jointed flat sedge Cyperus haspan
10

Conway South (Orange County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on July 5, 1994

Percent area covered with aquatic vegetation (PAC, %)
51
Percent of lake's volume filled with vegetation (PVI, %)
10
Average emergent plant biomass (kg wet wt/m2)
2.9
Average floating-leaved plant biomass (kg wet wt/m2)
3.3
Average submersed plant biomass (kg wet wt/m2)
2.1
Average width of emergent and floating-leaved zone (ft.)
28
Average lake depth (m)
5

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

Common Name Plant Species
Frequency (%)
torpedograss Panicum repens
100
Illinois pondweed Potamogeton illinoensis
80
rush fuirena Fuirena scirpoidea
80
pickerelweed Pontederia cordata
70
water-pennywort Hydrocotyle umbellata
60
water primrose Ludwigia octovalvis
60
green algae Chlorphyta
50
cat-tail Typha spp.
40
tapegrass Vallisneria americana
40
. Nitella prolonga
40
stonewort Nitella spp.
30
floating water-hyacinth Eichhornia crassipes
20
duck-potato Sagittaria lancifolia
20
common salvinia Salvinia rotundifolia
10
smartweed Polygonum hydropiperoides
10
baby-tears Micranthemum umbrosum
10
hydrilla Hydrilla verticillata
10
elephant-ear Colocasia esculenta
10
wax myrtle Myrica cerifera
10
melaleuca Melaleuca quinquenervia
10
maidencane Panicum hemitomon
10
elderberry Sambucus canadensis
10

Conway South (Orange County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 15, 1999

Percent area covered with aquatic vegetation (PAC, %)
74
Percent of lake's volume filled with vegetation (PVI, %)
16
Average emergent plant biomass (kg wet wt/m2)
2.6
Average floating-leaved plant biomass (kg wet wt/m2)
0.4
Average submersed plant biomass (kg wet wt/m2)
1.7
Average width of emergent and floating-leaved zone (ft.)
48
Average lake depth (m)
4

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

Common Name Plant Species
Frequency (%)
torpedograss Panicum repens
100
Illinois pondweed Potamogeton illinoensis
90
tapegrass Vallisneria americana
70
cat-tail Typha spp.
50
pickerelweed Pontederia cordata
40
duck-potato Sagittaria lancifolia
30
water-pennywort Hydrocotyle umbellata
30
water primrose Ludwigia octovalvis
30
maidencane Panicum hemitomon
30
rush fuirena Fuirena scirpoidea
30
hydrilla Hydrilla verticillata
20
sedge spp. Cyperus spp.
20
floating water-hyacinth Eichhornia crassipes
10
common salvinia Salvinia rotundifolia
10
spatterdock Nuphar luteum
10
fragrant water-lily Nymphaea odorata
10
dwarf arrowhead Sagittaria subulata
10
coontail Ceratophyllum demersum
10
willow Salix spp.
10
flat-sedge Cyperus odoratus
10
musk-grass Chara spp.
10
stonewort Nitella spp.
10
. Nitella prolonga
10

Conway (Orange County)

Electrofishing Data

     
Canfield and Hoyer (1992) Ranges
Species1
#/hr
kg/hr2
min weight (kg/hr)
mean weight (kg/hr)
max weight (kg/hr)
Bluegill
77
0.9
0.3
50.3
447
Bluespotted sunfish
4
0
0
0
0.1
Brook silverside
12
0
0
0.2
1.4
Chain pickerel
14
6
0
17.5
57.1
Golden shiner
1
0
0
6.9
65
Lake chubsucker
8
2.4
0.1
40.7
161.9
Largemouth bass
39
11.4
1.1
82
284.6
Redear sunfish
30
1.3
0.1
24.3
183.1
Seminole killifish
22
0.3
0
4.2
22.3
Spotted gar
1
0.8
.
.
.
Spotted sunfish
6
0.2
0
0.9
3.2
Taillight shiner
24
0
0
0.1
0.4
Warmouth
7
0.3
0
1.5
12
           
Total
245
23.6
      

1 Total # of species = 13.

2 Weights calculated using regressions from Hoyer and Canfield 1994 and from Bill Schaeffer, Florida Fish and Wildlife Conservation Commission (personal communication).

\

Catch per unit of effort (kg of fish / hour of sampling) versus total chlorophyll (mg/m3) and number of fish species collected versus surface area of lake for 60 Florida lakes sampled by Canfield and Hoyer (1992) (•) and Lake Conway (Orange County) electrofishing sampling (o). The lines represent linear regressions for logged values of the 60 Florida lakes.

Back to c lakes page