Newnan (Alachua County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 29°38'42", Longitude 82°13'8"
Period of record: 69 sampling dates; September 10, 1993 to September 7, 1999
Surface area (Shafer et al. 1986): No data available.
Lake Region (Griffith et al. 1997): Central Valley
Geologic formation (Brooks 1981):
The geology is dominated by phosphatic sand, clayey fine sand, and clay of the Bone Valley Formation, and the by phosphatic sand, silty sand, and clay of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Newnans Lake Basin subdivision of the Northern Peninsual Plains division of the Ocala Uplift District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 4 months sampled:
|
pH |
7.0 |
Sulfate (mg/L) |
3.8 |
|
Total alkalinity (mg/L as CaCO3) |
13.3 |
Calcium (mg/L) |
5.7 |
|
Conductance (µS/cm @ 25 °C) |
65 |
Magnesium (mg/L) |
6.9 |
|
Color (Pt-Co units) |
103 |
Sodium (mg/L) |
6.8 |
|
Chloride (mg/L) |
11.5 |
Potassium (mg/L) |
0.4 |
|
Silicon (mg/L) |
2.2 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 69 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
58 |
117 |
206 |
|
Long-term total nitrogen concentrations (µg/L) |
1250 |
3430 |
6220 |
|
Long-term total chlorophyll concentrations (µg/L) |
24.3 |
230.5 |
493.3 |
|
Long-term Secchi depth (ft) |
0.4 |
1.0 |
2.2 |
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-25-99 |
110 |
2750 |
217.7 |
1.1 |
|
Feb-26-99 |
110 |
3170 |
195.0 |
1.0 |
|
Mar-24-99 |
125 |
3380 |
222.0 |
1.0 |
|
Apr-30-99 |
139 |
4720 |
422.7 |
0.7 |
|
May-26-99 |
206 |
6220 |
415.7 |
0.4 |
|
Jul-27-99 |
190 |
2290 |
66.0 |
1.1 |
|
Aug-17-99 |
180 |
2490 |
92.7 |
1.1 |
|
Sep-07-99 |
154 |
3450 |
172.7 |
1.3 |
|
|
|
|
|
|
|
1999 Average |
152 |
3560 |
225.5 |
1.0 |
Newnan (Alachua County)
Electrofishing Data
|
|
|
|
Canfield and Hoyer (1992) Ranges |
||
|
Species1 |
#/hr |
kg/hr2 |
min weight (kg/hr) |
mean weight (kg/hr) |
max weight (kg/hr) |
|
Black crappie |
6 |
0.3 |
0.1 |
6.4 |
28.7 |
|
Blue tilapia |
2 |
0.6 |
6.1 |
17.4 |
28.6 |
|
Bluegill |
81 |
2 |
0.3 |
50.3 |
447 |
|
Brook silverside |
3 |
0 |
0 |
0.2 |
1.4 |
|
Brown bullhead |
46 |
3.6 |
0.1 |
14.5 |
72.1 |
|
Dollar sunfish |
1 |
0 |
0 |
0.3 |
0.5 |
|
Florida gar |
1 |
0.5 |
0.8 |
50.1 |
328.6 |
|
Gizzard shad |
5 |
0.5 |
0 |
10.3 |
39.5 |
|
Golden shiner |
15 |
0.1 |
0 |
6.9 |
65 |
|
Lake chubsucker |
2 |
1.3 |
0.1 |
40.7 |
161.9 |
|
Largemouth bass |
4 |
1.2 |
1.1 |
82 |
284.6 |
|
Redear sunfish |
7 |
0.2 |
0.1 |
24.3 |
183.1 |
|
Seminole killifish |
8 |
0.1 |
0 |
4.2 |
22.3 |
|
Taillight shiner |
12 |
0 |
0 |
0.1 |
0.4 |
|
Threadfin shad |
250 |
1.8 |
0 |
2.7 |
10.9 |
|
Warmouth |
6 |
0.1 |
0 |
1.5 |
12 |
|
|
|
|
|
|
|
|
Total |
449 |
12.3 |
|
|
|
1
Total # of species = 16.