Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°31'46", Longitude 81°22'45"
Period of record: 90 sampling dates; April 22, 1992 to November 23, 1999
Surface area (LAKEWATCH): 12 acres / 5 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Supplemental, unpublished water chemistry data, University of Florida.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 1 month sampled:
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Total alkalinity (mg/L as CaCO3) |
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| Conductance (µS/cm @ 25 °C) |
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Color (Pt-Co units) |
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| Chloride (mg/L) |
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Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 90 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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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:
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Santiago (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on September 15, 1994
| Percent area covered with aquatic vegetation (PAC, %) |
49
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| Percent of lake's volume filled with vegetation (PVI, %) |
42
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| Average emergent plant biomass (kg wet wt/m2) |
0.2
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| Average floating-leaved plant biomass (kg wet wt/m2) |
3.1
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| Average submersed plant biomass (kg wet wt/m2) |
0.4
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| Average width of emergent and floating-leaved zone (ft.) |
23
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| Average lake depth (m) |
2
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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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| water-pennywort | Hydrocotyle umbellata |
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| spatterdock | Nuphar luteum |
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| bacopa | Bacopa monnieri |
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| southern naiad | Najas guadalupensis |
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| torpedograss | Panicum repens |
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| alligator-weed | Alternanthera philoxeroides |
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| slender spikerush | Eleocharis baldwinii |
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| red ludwigia | Ludwigia repens |
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| pickerelweed | Pontederia cordata |
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| tapegrass | Vallisneria americana |
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| bald cypress | Taxodium distichum |
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| hydrilla | Hydrilla verticillata |
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| slender naiad | Najas minor |
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| water primrose | Ludwigia octovalvis |
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Santiago (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 21, 1999
| Percent area covered with aquatic vegetation (PAC, %) |
46
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| Percent of lake's volume filled with vegetation (PVI, %) |
33
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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) |
2.1
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| Average submersed plant biomass (kg wet wt/m2) |
3.1
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| Average width of emergent and floating-leaved zone (ft.) |
3
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| Average lake depth (m) |
2
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Frequency that plant species occur in 5 evenly spaced transects around the lake.
| Common Name | Plant Species |
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| water-pennywort | Hydrocotyle umbellata |
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| hydrilla | Hydrilla verticillata |
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| torpedograss | Panicum repens |
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| tapegrass | Vallisneria americana |
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| southern naiad | Najas guadalupensis |
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| flat-sedge | Cyperus odoratus |
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| slender spikerush | Eleocharis baldwinii |
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| spatterdock | Nuphar luteum |
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| water primrose | Ludwigia octovalvis |
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| bald cypress | Taxodium distichum |
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| pickerelweed | Pontederia cordata |
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| bacopa | Bacopa monnieri |
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| baby-tears | Micranthemum umbrosum |
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| floating water-hyacinth | Eichhornia crassipes |
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| alligator-weed | Alternanthera philoxeroides |
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| umbrella-grass | Fuirena squarrosa |
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| Tracy's beak-rush | Rhynchospora tracyi |
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