Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°22'26", Longitude 81°10'44"
Period of record: 107 sampling dates; October 5, 1990 to November 20, 1999
Surface area (LAKEWATCH): No data available. Bathymetric Map
Lake Region (Griffith et al. 1997): Osceola Slope
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 Holopaw-Indian Town Ridges and Swales division of the Eastern Flatwoods 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Supplemental, unpublished water chemistry data, University of Florida.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) | 11.7 |
| Total alkalinity (mg/L as CaCO3) |
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Calcium (mg/L) | 3.6 |
| Conductance (µS/cm @ 25 °C) |
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Magnesium (mg/L) | 9.7 |
| Color (Pt-Co units) |
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Sodium (mg/L) | 9.0 |
| Chloride (mg/L) |
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Potassium (mg/L) | 0.7 |
| Silicon (mg/L) |
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Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 107 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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Mary Jane (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 23, 1992
| Percent area covered with aquatic vegetation (PAC, %) |
0
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| Percent of lake's volume filled with vegetation (PVI, %) |
0
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| Average emergent plant biomass (kg wet wt/m2) |
8.6
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| Average floating-leaved plant biomass (kg wet wt/m2) |
1.7
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| Average submersed plant biomass (kg wet wt/m2) |
0.0
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| Average width of emergent and floating-leaved zone (ft.) |
343
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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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| cat-tail | Typha spp. |
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| spatterdock | Nuphar luteum |
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| pickerelweed | Pontederia cordata |
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| torpedograss | Panicum repens |
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| maidencane | Panicum hemitomon |
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| fragrant water-lily | Nymphaea odorata |
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| banana-lily | Nymphoides aquatica |
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| duck-potato | Sagittaria lancifolia |
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| water primrose | Ludwigia octovalvis |
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| rush fuirena | Fuirena scirpoidea |
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Mary Jane (Orange County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 24, 1998
| Percent area covered with aquatic vegetation (PAC, %) |
8
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| Percent of lake's volume filled with vegetation (PVI, %) |
3
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| Average emergent plant biomass (kg wet wt/m2) |
6.0
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| Average floating-leaved plant biomass (kg wet wt/m2) |
2.9
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| Average submersed plant biomass (kg wet wt/m2) |
0.0
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| Average width of emergent and floating-leaved zone (ft.) |
326
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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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| spatterdock | Nuphar luteum |
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| cat-tail | Typha spp. |
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| pickerelweed | Pontederia cordata |
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| wax myrtle | Myrica cerifera |
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| maidencane | Panicum hemitomon |
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| torpedograss | Panicum repens |
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| bald cypress | Taxodium distichum |
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| duck-potato | Sagittaria lancifolia |
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| willow | Salix spp. |
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| sedge spp. | Cyperus spp. |
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| fragrant water-lily | Nymphaea odorata |
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| floating water-hyacinth | Eichhornia crassipes |
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| common salvinia | Salvinia rotundifolia |
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| banana-lily | Nymphoides aquatica |
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| buttonbush | Cephalanthus occidentalis |
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| southern water-grass | Hydrochloa caroliniensis |
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| bladderwort | Utricularia foliosa |
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