Little Bear (Seminole County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 28°38'42", Longitude 81°26'41"

Period of record: 66 sampling dates; January 26, 1992 to July 31, 1999

Surface area (LAKEWATCH): 28 acres / 12 hectacres      Bathymetaric Map

Lake Region (Griffith et al. 1997): Apopka Upland

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 Apopka Hills subdivision of the Apopka Upland division of the Central Lake District.

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 66 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
8
14
29
Long-term total nitrogen concentrations (µg/L)
380
510
860
Long-term total chlorophyll concentrations (µg/L)
1.0
5.3
12.3
Long-term Secchi depth (ft)
6.1
9.6
16.1

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-07-99
15
610
3.3
8.0
Apr-19-99
9
520
3.7
8.7
May-22-99
14
470
2.0
9.7
Jun-30-99
10
570
4.0
10.2
Jul-31-99
9
550
3.0
13.3
         
1999 Average
12
550
3.2
10.0

Little Bear (Seminole County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on September 14, 1998

Percent area covered with aquatic vegetation (PAC, %)
34
Percent of lake's volume filled with vegetation (PVI, %)
3
Average emergent plant biomass (kg wet wt/m2)
1.3
Average floating-leaved plant biomass (kg wet wt/m2)
1.0
Average submersed plant biomass (kg wet wt/m2)
2.7
Average width of emergent and floating-leaved zone (ft.)
25
Average lake depth (m)
3

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

Common Name Plant Species
Frequency (%)
respuinata bladderwort Utricularia resupinata
100
slender spikerush Eleocharis baldwinii
70
spatterdock Nuphar luteum
70
water primrose Ludwigia octovalvis
70
torpedograss Panicum repens
70
stonewort Nitella spp.
70
southern naiad Najas guadalupensis
60
wax myrtle Myrica cerifera
50
water-pennywort Hydrocotyle umbellata
40
tapegrass Vallisneria americana
40
pickerelweed Pontederia cordata
30
cat-tail Typha spp.
20
dwarf arrowhead Sagittaria subulata
20
red ludwigia Ludwigia repens
10
elephant-ear Colocasia esculenta
10
water tupelo Nyssa aquatica
10
buttonbush Cephalanthus occidentalis
10
willow Salix spp.
10
sawgrass Cladium jamaicense
10
rush fuirena Fuirena scirpoidea
10
St. John's wort Hypericum spp.
10
leconte sedge Cyperus lecontei
10
red maple Acer rubrum
10

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