Silver (Lake County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°50'3", Longitude 81°48'6"
Period of record: 5 sampling dates; January 30, 1991 to July 29, 1991
Surface area (Shafer et al. 1986): 388 acres / 157 hectacres
Lake Region (Griffith et al. 1997): Central Valley
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 Central Lakes division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
8.1 |
Sulfate (mg/L) |
35.8 |
|
Total alkalinity (mg/L as CaCO3) |
113.5 |
Calcium (mg/L) |
33.2 |
|
Conductance (µS/cm @ 25 °C) |
590 |
Magnesium (mg/L) |
17.3 |
|
Color (Pt-Co units) |
10 |
Sodium (mg/L) |
55.8 |
|
Chloride (mg/L) |
97.8 |
Potassium (mg/L) |
7.2 |
|
Silicon (mg/L) |
5.9 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 5 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
10 |
17 |
23 |
|
Long-term total nitrogen concentrations (µg/L) |
1370 |
2230 |
3500 |
|
Long-term total chlorophyll concentrations (µg/L) |
1.0 |
5.5 |
8.7 |
|
Long-term Secchi depth (ft) |
5.0 |
5.7 |
6.2 |
Florida LAKEWATCH data were not collected in 1999.
Silver (Lake County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 2, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
56 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
13 |
|
Average emergent plant biomass (kg wet wt/m2) |
1.7 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.4 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.4 |
|
Average width of emergent and floating-leaved zone (ft.) |
202 |
|
Average lake depth (m) |
1 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
duck-potato |
Sagittaria lancifolia |
50 |
|
cat-tail |
Typha spp. |
50 |
|
tapegrass |
Vallisneria americana |
50 |
|
maidencane |
Panicum hemitomon |
50 |
|
rush fuirena |
Fuirena scirpoidea |
50 |
|
fragrant water-lily |
Nymphaea odorata |
40 |
|
lemon bacopa |
Bacopa caroliniana |
40 |
|
water-pennywort |
Hydrocotyle umbellata |
40 |
|
Illinois pondweed |
Potamogeton illinoensis |
30 |
|
white-top sedge |
Dichromena colorata |
30 |
|
torpedograss |
Panicum repens |
20 |
|
red root |
Lachnanthes caroliniana |
20 |
|
knot grass |
Paspalum distichum |
20 |
|
red ludwigia |
Ludwigia repens |
10 |
|
dwarf arrowhead |
Sagittaria subulata |
10 |
|
purple bladderwort |
Utricularia purpurea |
10 |
|
water primrose |
Ludwigia octovalvis |
10 |
|
willow |
Salix spp. |
10 |
|
sawgrass |
Cladium jamaicense |
10 |
|
giant bulrush |
Scirpus californicus |
10 |
|
bladderwort |
Utricularia foliosa |
10 |