Geneva (Pasco County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°11'16", Longitude 82°34'23"
Period of record: 76 sampling dates; August 23, 1990 to March 24, 1999
Surface area : No data available.
Lake Region (Griffith et al. 1997): Keystone Lakes
Geologic formation (Brooks 1981):
The geology is dominated by argillaceous to sandy impure limestone of the Tampa Formation.
Physiographic region (Brooks 1981):
The water body lies in the Land-O-Lakes subdivision of the Tampa Plain division of the Ocala Uplift District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
6.7 |
Sulfate (mg/L) |
6.7 |
|
Total alkalinity (mg/L as CaCO3) |
16.0 |
Calcium (mg/L) |
9.0 |
|
Conductance (µS/cm @ 25 °C) |
162 |
Magnesium (mg/L) |
2.0 |
|
Color (Pt-Co units) |
38 |
Sodium (mg/L) |
18.0 |
|
Chloride (mg/L) |
32.5 |
Potassium (mg/L) |
2.0 |
|
Silicon (mg/L) |
0.5 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 76 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
9 |
20 |
41 |
|
Long-term total nitrogen concentrations (µg/L) |
680 |
860 |
1090 |
|
Long-term total chlorophyll concentrations (µg/L) |
3.7 |
12.3 |
66.3 |
|
Long-term Secchi depth (ft) |
3.0 |
4.9 |
7.8 |
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-24-99 |
41 |
770 |
66.3 |
5.0 |
|
Mar-24-99 |
27 |
940 |
8.7 |
6.5 |
|
|
|
|
|
|
|
1999 Average |
34 |
850 |
37.5 |
5.8 |
Geneva (Pasco County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on May 12, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
0 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
0 |
|
Average emergent plant biomass (kg wet wt/m2) |
6.1 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
8.3 |
|
Average submersed plant biomass (kg wet wt/m2) |
0.0 |
|
Average width of emergent and floating-leaved zone (ft.) |
9 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 10 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
floating water-hyacinth |
Eichhornia crassipes |
100 |
|
torpedograss |
Panicum repens |
80 |
|
pickerelweed |
Pontederia cordata |
60 |
|
water primrose |
Ludwigia octovalvis |
60 |
|
maidencane |
Panicum hemitomon |
50 |
|
duck-potato |
Sagittaria lancifolia |
40 |
|
water-pennywort |
Hydrocotyle umbellata |
40 |
|
cat-tail |
Typha spp. |
20 |
|
common salvinia |
Salvinia rotundifolia |
10 |
|
spatterdock |
Nuphar luteum |
10 |
|
smartweed |
Polygonum hydropiperoides |
10 |
|
willow |
Salix spp. |
10 |
|
musk-grass |
Chara spp. |
10 |