Hickorynut (Orange County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°25'38", Longitude 81°38'32"

Period of record: 82 sampling dates; May 15, 1989 to November 20, 1999

Surface area (LAKEWATCH): 537 acres / 217 hectacres      Bathymetric Map

Lake Region (Griffith et al. 1997): Clermont Uplands

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 Gap 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Supplemental, unpublished water chemistry data, University of Florida.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 1 month sampled:
 
pH
6.9
 Sulfate (mg/L)
18.3
Total alkalinity (mg/L as CaCO3)
19.3
 Calcium (mg/L)
6.3
Conductance (µS/cm @ 25 °C)
189
 Magnesium (mg/L)
5.4
Color (Pt-Co units)
19
 Sodium (mg/L)
14.7
Chloride (mg/L)
31.4
 Potassium (mg/L)
8.0
Silicon (mg/L)
0.2
    

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 82 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
3
8
17
Long-term total nitrogen concentrations (µg/L)
330
860
2390
Long-term total chlorophyll concentrations (µg/L)
0.7
2.7
9.3
Long-term Secchi depth (ft)
5.7
11.9
20.0

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-20-99
12
730
4.0
8.2
May-16-99
11
740
3.3
8.3
Jun-26-99
9
640
3.0
9.3
Aug-14-99
11
730
4.0
9.0
Oct-23-99
9
730
4.7
8.0
Nov-20-99
9
790
4.0
10.3
         
1999 Average
10
730
3.8
8.9

Hickorynut (Orange County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on August 8, 1991

Percent area covered with aquatic vegetation (PAC, %)
68
Percent of lake's volume filled with vegetation (PVI, %)
24
Average emergent plant biomass (kg wet wt/m2)
4.2
Average floating-leaved plant biomass (kg wet wt/m2)
1.7
Average submersed plant biomass (kg wet wt/m2)
3.5
Average width of emergent and floating-leaved zone (ft.)
89
Average lake depth (m)
3

Frequency that plant species occur in 20 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
rush fuirena Fuirena scirpoidea
90
banana-lily Nymphoides aquatica
75
stonewort Nitella spp.
70
pickerelweed Pontederia cordata
65
water-pennywort Hydrocotyle umbellata
65
maidencane Panicum hemitomon
60
spatterdock Nuphar luteum
55
cat-tail Typha spp.
35
duck-potato Sagittaria lancifolia
30
slender spikerush Eleocharis baldwinii
30
bog-moss Mayaca fluviatilis
25
bladderwort Utricularia foliosa
25
lemon bacopa Bacopa caroliniana
15
southern cutgrass Leersia hexandra
5
pipewort Eriocaulon spp.
5
red root Lachnanthes caroliniana
5

Hickorynut (Orange County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 11, 1992

Percent area covered with aquatic vegetation (PAC, %)
40
Percent of lake's volume filled with vegetation (PVI, %)
8
Average emergent plant biomass (kg wet wt/m2)
3.7
Average floating-leaved plant biomass (kg wet wt/m2)
1.6
Average submersed plant biomass (kg wet wt/m2)
5.8
Average width of emergent and floating-leaved zone (ft.)
73
Average lake depth (m)
3

Frequency that plant species occur in 20 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
rush fuirena Fuirena scirpoidea
90
stonewort Nitella spp.
85
duck-potato Sagittaria lancifolia
80
pickerelweed Pontederia cordata
55
maidencane Panicum hemitomon
55
St. John's wort Hypericum spp.
55
fragrant water-lily Nymphaea odorata
35
cat-tail Typha spp.
35
buttonbush Cephalanthus occidentalis
35
banana-lily Nymphoides aquatica
30
bog-moss Mayaca fluviatilis
30
water primrose Ludwigia octovalvis
25
southern cutgrass Leersia hexandra
25
red root Lachnanthes caroliniana
25
slender spikerush Eleocharis baldwinii
20
water-pennywort Hydrocotyle umbellata
20
sawgrass Cladium jamaicense
20
spatterdock Nuphar luteum
15
willow Salix spp.
15
yellow-eyed grass Xyris spp.
15
bladderwort Utricularia foliosa
15
red ludwigia Ludwigia repens
10
Tracy's beak-rush Rhynchospora tracyi
10
jointed flat sedge Cyperus haspan
10
smartweed Polygonum hydropiperoides
5
dwarf arrowhead Sagittaria subulata
5
rush spp. Juncus dichotomus
5

Hickorynut (Orange County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on August 15, 1996

Percent area covered with aquatic vegetation (PAC, %)
54
Percent of lake's volume filled with vegetation (PVI, %)
6
Average emergent plant biomass (kg wet wt/m2)
4.3
Average floating-leaved plant biomass (kg wet wt/m2)
0.8
Average submersed plant biomass (kg wet wt/m2)
3.0
Average width of emergent and floating-leaved zone (ft.)
95
Average lake depth (m)
4

Frequency that plant species occur in 13 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
stonewort Nitella spp.
100
rush fuirena Fuirena scirpoidea
100
duck-potato Sagittaria lancifolia
92
buttonbush Cephalanthus occidentalis
85
red ludwigia Ludwigia repens
77
wax myrtle Myrica cerifera
77
banana-lily Nymphoides aquatica
69
lemon bacopa Bacopa caroliniana
69
fragrant water-lily Nymphaea odorata
62
water-pennywort Hydrocotyle umbellata
62
smartweed Polygonum hydropiperoides
54
pickerelweed Pontederia cordata
54
maidencane Panicum hemitomon
54
water spinach Ipomoea aquatica
31
water primrose Ludwigia octovalvis
31
willow Salix spp.
31
St. John's wort Hypericum spp.
31
. Juncus polycephalus
31
jointed flat sedge Cyperus haspan
23
cat-tail Typha spp.
15
bog-moss Mayaca fluviatilis
15
alligator-weed Alternanthera philoxeroides
8
spatterdock Nuphar luteum
8
cone-spur bladderwort Utricularia gibba
8
torpedograss Panicum repens
8
bladderwort Utricularia foliosa
8
umbrella sedge Cyperus alternifolius
8
respuinata bladderwort Utricularia resupinata
8
. Cyperus elegans
8

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