2 Weights calculated
using regressions from Hoyer and Canfield 1994 and from Bill Schaeffer,
Florida Fish and Wildlife Conservation Commission (personal communication).
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°8'20", Longitude 81°36'47"
Period of record: 120 sampling dates; January 30, 1990 to December 27, 1999
Surface area (LAKEWATCH): 197 acres / 47 hectacres Bathymetric Map
Lake Region (Griffith et al. 1997): Ocala Scrub
Geologic formation (Brooks 1981):
The geology is dominated by sand dunes and well sorted fine sand of the Pleistocene.
Physiographic region (Brooks 1981):
The water body lies in the Ocala Scrub division of the Central Lake
District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 4 months sampled:
| pH |
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Sulfate (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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Potassium (mg/L) |
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Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 120 months sampled:
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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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Grasshopper (Lake County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 24, 1993
| Percent area covered with aquatic vegetation (PAC, %) |
84
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| Percent of lake's volume filled with vegetation (PVI, %) |
9
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| Average emergent plant biomass (kg wet wt/m2) |
5.7
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| Average floating-leaved plant biomass (kg wet wt/m2) |
0.2
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| Average submersed plant biomass (kg wet wt/m2) |
1.9
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| Average width of emergent and floating-leaved zone (ft.) |
49
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| Average lake depth (m) |
3
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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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| maidencane | Panicum hemitomon |
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| purple bladderwort | Utricularia purpurea |
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| spider-grass | Websteria confervoides |
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| St. John's wort | Hypericum spp. |
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| cone-spur bladderwort | Utricularia gibba |
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| buttonbush | Cephalanthus occidentalis |
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| red root | Lachnanthes caroliniana |
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| rush fuirena | Fuirena scirpoidea |
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| slender spikerush | Eleocharis baldwinii |
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| wax myrtle | Myrica cerifera |
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| southern cutgrass | Leersia hexandra |
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| spatterdock | Nuphar luteum |
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| fragrant water-lily | Nymphaea odorata |
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| pickerelweed | Pontederia cordata |
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| bog-moss | Mayaca fluviatilis |
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| bladderwort | Utricularia foliosa |
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| sun dew | Drosera intermedra |
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Grasshopper (Lake County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on June 3, 1998
| Percent area covered with aquatic vegetation (PAC, %) |
52
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| Percent of lake's volume filled with vegetation (PVI, %) |
17
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| Average emergent plant biomass (kg wet wt/m2) |
6.8
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| Average floating-leaved plant biomass (kg wet wt/m2) |
1.4
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| Average submersed plant biomass (kg wet wt/m2) |
5.7
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| Average width of emergent and floating-leaved zone (ft.) |
54
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| Average lake depth (m) |
3
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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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| purple bladderwort | Utricularia purpurea |
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| maidencane | Panicum hemitomon |
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| southern cutgrass | Leersia hexandra |
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| buttonbush | Cephalanthus occidentalis |
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| rush fuirena | Fuirena scirpoidea |
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| spider-grass | Websteria confervoides |
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| Florida bladderwort | Utricularia floridana |
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| St. John's wort | Hypericum spp. |
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| fragrant water-lily | Nymphaea odorata |
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| bladderwort | Utricularia foliosa |
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| spatterdock | Nuphar luteum |
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| pickerelweed | Pontederia cordata |
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| bog-moss | Mayaca fluviatilis |
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| water spikerush | Eleocharis elongata |
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| sweetbay | Magnolia virginiana |
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| red bay | Persea borbonia |
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Grasshopper (Lake County)
Electrofishing Data
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| Species1 |
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| Bluefin killifish |
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| Bluegill |
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| Bluespotted sunfish |
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| Chain pickerel |
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| Eastern mosquitofish |
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| Florida gar |
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| Golden shiner |
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| Lake chubsucker |
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| Largemouth bass |
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| Lined topminnow |
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| Redfin pickerel |
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| Warmouth |
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1 Total # of species = 12.
2 Weights calculated
using regressions from Hoyer and Canfield 1994 and from Bill Schaeffer,
Florida Fish and Wildlife Conservation Commission (personal communication).
Catch per unit of effort (kg of fish / hour of sampling) versus total chlorophyll (mg/m3) and number of fish species collected versus surface area of lake for 60 Florida lakes sampled by Canfield and Hoyer (1992) (•) and Lake Grasshopper (Lake County) electrofishing sampling (o). The lines represent linear regressions for logged values of the 60 Florida lakes.