Eagle (Polk County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 27°58'59", Longitude 81°45'57"
Period of record: 21 sampling dates; October 27, 1991 to August 31, 1997
Surface area (Shafer et al. 1986): 651 acres / 263 hectacres
Lake Region (Griffith et al. 1997): Winter Haven/Lake Henry Ridges
Geologic formation (Brooks 1981):
The geology is dominated by deeply weathered clayey sand and granular sand of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Winter Haven Karst division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 5 months sampled:
|
pH |
7.8 |
Sulfate (mg/L) |
59.5 |
|
Total alkalinity (mg/L as CaCO3) |
29.3 |
Calcium (mg/L) |
12.9 |
|
Conductance (µS/cm @ 25 °C) |
265 |
Magnesium (mg/L) |
42.2 |
|
Color (Pt-Co units) |
12 |
Sodium (mg/L) |
15.1 |
|
Chloride (mg/L) |
28.8 |
Potassium (mg/L) |
8.5 |
|
Silicon (mg/L) |
0.4 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 21 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
16 |
22 |
31 |
|
Long-term total nitrogen concentrations (µg/L) |
540 |
860 |
1300 |
|
Long-term total chlorophyll concentrations (µg/L) |
4.3 |
21.1 |
50.3 |
|
Long-term Secchi depth (ft) |
2.4 |
5.9 |
11.3 |
Florida LAKEWATCH data were not collected in 1999.
Eagle (Polk County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 13, 1993
|
Percent area covered with aquatic vegetation (PAC, %) |
98 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
36 |
|
Average emergent plant biomass (kg wet wt/m2) |
2.9 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.3 |
|
Average submersed plant biomass (kg wet wt/m2) |
6.5 |
|
Average width of emergent and floating-leaved zone (ft.) |
111 |
|
Average lake depth (m) |
5 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
cat-tail |
Typha spp. |
90 |
|
tapegrass |
Vallisneria americana |
90 |
|
bladderwort |
Utricularia foliosa |
80 |
|
Illinois pondweed |
Potamogeton illinoensis |
70 |
|
club-rush |
Eleocharis cellulosa |
50 |
|
willow |
Salix spp. |
40 |
|
rush fuirena |
Fuirena scirpoidea |
40 |
|
duck-potato |
Sagittaria lancifolia |
30 |
|
torpedograss |
Panicum repens |
30 |
|
salt-bush |
Baccharis spp. |
20 |
|
fragrant water-lily |
Nymphaea odorata |
10 |
|
baby-tears |
Micranthemum umbrosum |
10 |
|
cone-spur bladderwort |
Utricularia gibba |
10 |
|
melaleuca |
Melaleuca quinquenervia |
10 |
|
sawgrass |
Cladium jamaicense |
10 |
|
maidencane |
Panicum hemitomon |
10 |
|
elderberry |
Sambucus canadensis |
10 |