Erie (Leon County)

Florida LAKEWATCH Water Chemistry Summary

Location: Latitude 30°22'5", Longitude 84°7'46"

Period of record: 100 sampling dates; September 14, 1991 to December 19, 1999

Surface area (LAKEWATCH): 52 acres / 21 hectacres     Bathymetric Map

Lake Region (Griffith et al. 1997): Tifton/Tallahassee Uplands

Geologic formation (Brooks 1981):

The geology is dominated by argillaceous to sandy impure limestone of the Chattahoochee Formation.

Physiographic region (Brooks 1981):

The water body lies in the Tallahassee Red Hills subdivision of the State Line Hills division of the Ocala Uplift District.

Supplemental, unpublished water chemistry data, University of Florida.

Numbers reported below are the average for 1 month sampled:

Long-term Florida LAKEWATCH Data

Numbers reported below are the minimum, average, and maximum value for the 100 months sampled:

 
Minimum
Average
Maximum
Long-term total phosphorus concentrations (µg/L)
2
6
13
Long-term total nitrogen concentrations (µg/L)
270
420
800
Long-term total chlorophyll concentrations (µg/L)
1.0
2.3
6.7
Long-term Secchi depth (ft)
2.5
6.0
9.3

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:

Date
TP (µg/L)
TN (µg/L)
CHL (µg/L)
SECCHI (ft
Jan-30-99
10
460
3.7
6.3
Feb-28-99
10
490
2.3
6.6
Mar-28-99
.
.
2.0
5.6
Apr-25-99
9
630
2.7
4.3
May-31-99
6
460
2.3
4.7
Jun-30-99
7
380
2.7
4.8
Jul-18-99
4
370
2.0
5.8
Aug-22-99
4
330
1.3
5.0
Sep-19-99
6
410
2.0
3.5
Oct-17-99
6
420
2.0
3.8
Nov-21-99
6
530
1.7
4.3
Dec-19-99
7
550
2.3
2.5
         
1999 Average
7
460
2.2
4.8

Erie (Leon County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on September 10, 1991

Percent area covered with aquatic vegetation (PAC, %)
74
Percent of lake's volume filled with vegetation (PVI, %)
31
Average emergent plant biomass (kg wet wt/m2)
3.6
Average floating-leaved plant biomass (kg wet wt/m2)
2.4
Average submersed plant biomass (kg wet wt/m2)
1.1
Average width of emergent and floating-leaved zone (ft.)
111
Average lake depth (m)
3

Frequency that plant species occur in 10 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
banana-lily Nymphoides aquatica
100
fragrant water-lily Nymphaea odorata
100
maidencane Panicum hemitomon
100
St. John's wort Hypericum spp.
90
bald cypress Taxodium distichum
90
red ludwigia Ludwigia repens
50
variable-leaf milfoil Myriophyllum heterophyllum
50
pipewort Eriocaulon spp.
30
slender spikerush Eleocharis baldwinii
20
spatterdock Nuphar luteum
10
bog-moss Mayaca fluviatilis
10

Erie (Leon County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on October 6, 1993

Percent area covered with aquatic vegetation (PAC, %)
86
Percent of lake's volume filled with vegetation (PVI, %)
72
Average emergent plant biomass (kg wet wt/m2)
1.1
Average floating-leaved plant biomass (kg wet wt/m2)
2.7
Average submersed plant biomass (kg wet wt/m2)
4.6
Average width of emergent and floating-leaved zone (ft.)
219
Average lake depth (m)
1

Frequency that plant species occur in 10 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
banana-lily Nymphoides aquatica
100
fragrant water-lily Nymphaea odorata
90
variable-leaf milfoil Myriophyllum heterophyllum
90
maidencane Panicum hemitomon
90
bald cypress Taxodium distichum
90
pipewort Eriocaulon spp.
80
St. John's wort Hypericum spp.
80
spatterdock Nuphar luteum
70
Florida bladderwort Utricularia floridana
50
purple bladderwort Utricularia purpurea
30
slender spikerush Eleocharis baldwinii
20
red ludwigia Ludwigia repens
20
lemon bacopa Bacopa caroliniana
20
water-pennywort Hydrocotyle umbellata
20
yellow-eyed grass Xyris spp.
10

Erie (Leon County)

Florida LAKEWATCH Aquatic Plant Summary

Aquatic plant data collected on June 30, 1999

Percent area covered with aquatic vegetation (PAC, %)
100
Percent of lake's volume filled with vegetation (PVI, %)
98
Average emergent plant biomass (kg wet wt/m2)
4.3
Average floating-leaved plant biomass (kg wet wt/m2)
4.7
Average submersed plant biomass (kg wet wt/m2)
3.0
Average width of emergent and floating-leaved zone (ft.)
68
Average lake depth (m)
1

Frequency that plant species occur in 10 evenly spaced transects around the lake.

Common Name Plant Species
Frequency (%)
banana-lily Nymphoides aquatica
100
fragrant water-lily Nymphaea odorata
100
variable-leaf milfoil Myriophyllum heterophyllum
100
maidencane Panicum hemitomon
100
Florida bladderwort Utricularia floridana
100
St. John's wort Hypericum spp.
100
bald cypress Taxodium distichum
100
red ludwigia Ludwigia repens
80
purple bladderwort Utricularia purpurea
80
pipewort Eriocaulon spp.
70
lemon bacopa Bacopa caroliniana
60
yellow-eyed grass Xyris spp.
50
swamp titi Cyrilla racemiflora
40
spatterdock Nuphar luteum
30
water-pennywort Hydrocotyle umbellata
20
cone-spur bladderwort Utricularia gibba
10
wax myrtle Myrica cerifera
10
buttonbush Cephalanthus occidentalis
10
Tracy's beak-rush Rhynchospora tracyi
10
water spikerush Eleocharis elongata
10

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