Gentry (Osceola County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°8'32", Longitude 81°14'24"
Period of record: 15 sampling dates; June 23, 1993 to August 18, 1999
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 coastal sand and shelly silty sand of the preglacial Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the Kissimmee Valley division of the Eastern Flatwoods District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 6 months sampled:
|
pH |
6.3 |
Sulfate (mg/L) |
10.4 |
|
Total alkalinity (mg/L as CaCO3) |
3.2 |
Calcium (mg/L) |
4.1 |
|
Conductance (µS/cm @ 25 °C) |
126 |
Magnesium (mg/L) |
8.5 |
|
Color (Pt-Co units) |
74 |
Sodium (mg/L) |
11.2 |
|
Chloride (mg/L) |
28.7 |
Potassium (mg/L) |
1.6 |
|
Silicon (mg/L) |
0.5 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 15 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
10 |
17 |
49 |
|
Long-term total nitrogen concentrations (µg/L) |
500 |
640 |
940 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
2.8 |
4.7 |
|
Long-term Secchi depth (ft) |
4.3 |
6.3 |
8.5 |
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 |
|
Feb-18-99 |
13 |
580 |
2.0 |
4.3 |
|
Mar-23-99 |
12 |
580 |
1.0 |
5.3 |
|
Apr-17-99 |
13 |
540 |
1.7 |
5.5 |
|
Jun-14-99 |
10 |
530 |
2.0 |
8.5 |
|
Aug-18-99 |
10 |
530 |
4.0 |
6.5 |
|
|
|
|
|
|
|
1999 Average |
12 |
550 |
2.1 |
6.0 |
Gentry (Osceola County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 23, 1993
|
Percent area covered with aquatic vegetation (PAC, %) |
14 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
2 |
|
Average emergent plant biomass (kg wet wt/m2) |
4.1 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
1.1 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.4 |
|
Average width of emergent and floating-leaved zone (ft.) |
299 |
|
Average lake depth (m) |
2 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
maidencane |
Panicum hemitomon |
100 |
|
slender spikerush |
Eleocharis baldwinii |
90 |
|
spatterdock |
Nuphar luteum |
80 |
|
pickerelweed |
Pontederia cordata |
80 |
|
bog-moss |
Mayaca fluviatilis |
70 |
|
cat-tail |
Typha spp. |
60 |
|
bald cypress |
Taxodium distichum |
60 |
|
banana-lily |
Nymphoides aquatica |
50 |
|
fragrant water-lily |
Nymphaea odorata |
50 |
|
variable-leaf milfoil |
Myriophyllum heterophyllum |
50 |
|
tapegrass |
Vallisneria americana |
50 |
|
willow |
Salix spp. |
50 |
|
rush fuirena |
Fuirena scirpoidea |
50 |
|
common salvinia |
Salvinia rotundifolia |
40 |
|
purple bladderwort |
Utricularia purpurea |
40 |
|
duck-potato |
Sagittaria lancifolia |
30 |
|
hydrilla |
Hydrilla verticillata |
30 |
|
buttonbush |
Cephalanthus occidentalis |
30 |
|
torpedograss |
Panicum repens |
30 |
|
lemon bacopa |
Bacopa caroliniana |
20 |
|
water-pennywort |
Hydrocotyle umbellata |
20 |
|
water primrose |
Ludwigia octovalvis |
20 |
|
giant bulrush |
Scirpus californicus |
20 |
|
southern water-grass |
Hydrochloa caroliniensis |
20 |
|
floating water-hyacinth |
Eichhornia crassipes |
10 |
|
alligator-weed |
Alternanthera philoxeroides |
10 |
|
wax myrtle |
Myrica cerifera |
10 |
|
melaleuca |
Melaleuca quinquenervia |
10 |
|
green algae |
Chlorphyta |
10 |
|
St. John's wort |
Hypericum spp. |
10 |