Hart (Orange County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°22'46", Longitude 81°12'41"
Period of record: 49 sampling dates; October 5, 1990 to November 8, 1994
Surface area (Shafer et al. 1986): No data available.
Lake Region (Griffith et al. 1997): Osceola Slope
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 Holopaw-Indian Town Ridges and Swales and Kissimmee Valley divisions of the Eastern Flatwoods District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 3 months sampled:
|
pH |
5.9 |
Sulfate (mg/L) |
12.7 |
|
Total alkalinity (mg/L as CaCO3) |
4.1 |
Calcium (mg/L) |
3.8 |
|
Conductance (µS/cm @ 25 °C) |
90 |
Magnesium (mg/L) |
11.5 |
|
Color (Pt-Co units) |
183 |
Sodium (mg/L) |
9.3 |
|
Chloride (mg/L) |
18.1 |
Potassium (mg/L) |
0.9 |
|
Silicon (mg/L) |
1.0 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 49 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
5 |
15 |
23 |
|
Long-term total nitrogen concentrations (µg/L) |
830 |
1110 |
1430 |
|
Long-term total chlorophyll concentrations (µg/L) |
2.0 |
4.1 |
10.3 |
|
Long-term Secchi depth (ft) |
1.4 |
2.3 |
3.3 |
Florida LAKEWATCH data were not collected in 1999.
Hart (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 23, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
0 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
0 |
|
Average emergent plant biomass (kg wet wt/m2) |
6.2 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.5 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.2 |
|
Average width of emergent and floating-leaved zone (ft.) |
442 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
spatterdock |
Nuphar luteum |
100 |
|
torpedograss |
Panicum repens |
90 |
|
pickerelweed |
Pontederia cordata |
80 |
|
cat-tail |
Typha spp. |
70 |
|
giant bulrush |
Scirpus californicus |
70 |
|
maidencane |
Panicum hemitomon |
70 |
|
slender spikerush |
Eleocharis baldwinii |
40 |
|
banana-lily |
Nymphoides aquatica |
40 |
|
fragrant water-lily |
Nymphaea odorata |
30 |
|
common salvinia |
Salvinia rotundifolia |
20 |
|
floating water-hyacinth |
Eichhornia crassipes |
10 |
|
dwarf arrowhead |
Sagittaria subulata |
10 |
|
tapegrass |
Vallisneria americana |
10 |
|
southern naiad |
Najas guadalupensis |
10 |
|
musk-grass |
Chara spp. |
10 |
|
bladderwort |
Utricularia foliosa |
10 |
|
Baldwin flat sedge |
Cyperus globulosus |
10 |