Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°34'42", Longitude 81°23'46"
Period of record: 50 sampling dates; November 25, 1990 to March 28, 1998
Surface area (LAKEWATCH): 84 acres / 34 hectacres Bathymetric Map
Lake Region (Griffith et al. 1997): Orlando Ridge
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 Orlando Promontory division of the Central
Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 3 months sampled:
| pH |
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Sulfate (mg/L) |
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| Total alkalinity (mg/L as CaCO3) |
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Calcium (mg/L) |
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| Conductance (µS/cm @ 25 °C) |
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Magnesium (mg/L) |
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| Color (Pt-Co units) |
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Sodium (mg/L) |
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| Chloride (mg/L) |
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Potassium (mg/L) |
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| Silicon (mg/L) |
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Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 50 months sampled:
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| Long-term total phosphorus concentrations (µg/L) |
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| Long-term total nitrogen concentrations (µg/L) |
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| Long-term total chlorophyll concentrations (µg/L) |
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| Long-term Secchi depth (ft) |
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Florida LAKEWATCH data were not collected in 1999.
Silver (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 30, 1991
| Percent area covered with aquatic vegetation (PAC, %) |
58
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| Percent of lake's volume filled with vegetation (PVI, %) |
20
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| Average emergent plant biomass (kg wet wt/m2) |
5.8
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| Average floating-leaved plant biomass (kg wet wt/m2) |
3.5
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| Average submersed plant biomass (kg wet wt/m2) |
4.9
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| Average width of emergent and floating-leaved zone (ft.) |
43
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| Average lake depth (m) |
4
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Frequency that plant species occur in 10 evenly spaced transects around the lake.
| Common Name | Plant Species |
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| tapegrass | Vallisneria americana |
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| Illinois pondweed | Potamogeton illinoensis |
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| cat-tail | Typha spp. |
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| water-pennywort | Hydrocotyle umbellata |
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| water primrose | Ludwigia octovalvis |
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| maidencane | Panicum hemitomon |
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| baby-tears | Micranthemum umbrosum |
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| floating water-hyacinth | Eichhornia crassipes |
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| duck-potato | Sagittaria lancifolia |
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| slender spikerush | Eleocharis baldwinii |
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| fragrant water-lily | Nymphaea odorata |
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| pickerelweed | Pontederia cordata |
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| elephant-ear | Colocasia esculenta |
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| willow | Salix spp. |
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| para grass | Brachiaria mutica |
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| green algae | Chlorphyta |
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Silver (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on September 27, 1996
| Percent area covered with aquatic vegetation (PAC, %) |
66
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| Percent of lake's volume filled with vegetation (PVI, %) |
14
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| Average emergent plant biomass (kg wet wt/m2) |
3.8
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| Average floating-leaved plant biomass (kg wet wt/m2) |
1.9
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| Average submersed plant biomass (kg wet wt/m2) |
5.9
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| Average width of emergent and floating-leaved zone (ft.) |
8
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| Average lake depth (m) |
4
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Frequency that plant species occur in 10 evenly spaced transects around the lake.
| Common Name | Plant Species |
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| tapegrass | Vallisneria americana |
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| . | Lyngbya spp. |
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| alligator-weed | Alternanthera philoxeroides |
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| slender spikerush | Eleocharis baldwinii |
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| water-pennywort | Hydrocotyle umbellata |
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| water primrose | Ludwigia octovalvis |
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| torpedograss | Panicum repens |
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| floating water-hyacinth | Eichhornia crassipes |
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| cat-tail | Typha spp. |
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| slender naiad | Najas minor |
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| common duckweed | Lemna minor |
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| smartweed | Polygonum hydropiperoides |
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| hydrilla | Hydrilla verticillata |
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| elephant-ear | Colocasia esculenta |
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| willow | Salix spp. |
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| duck-potato | Sagittaria lancifolia |
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| coontail | Ceratophyllum demersum |
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| Brazilian pepper | Schinus terebinthifolius |
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| wax myrtle | Myrica cerifera |
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| bald cypress | Taxodium distichum |
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| jointed flat sedge | Cyperus haspan |
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