Dora West (Lake County)
Florida LAKEWATCH Water Chemistry Summary
Location: Latitude 28°47'8", Longitude 81°42'31"
Period of record: 108 sampling dates; June 8, 1990 to December 17, 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 deeply weathered clayey sand and granular sand of the Hawthorne Formation.
Physiographic region (Brooks 1981):
The water body lies in the Central Lakes division of the Central Lake District.
Supplemental, unpublished water chemistry data, University of Florida.
Numbers reported below are the average for 2 months sampled:
|
pH |
8.7 |
Sulfate (mg/L) |
19.3 |
|
Total alkalinity (mg/L as CaCO3) |
125.0 |
Calcium (mg/L) |
37.3 |
|
Conductance (µS/cm @ 25 °C) |
404 |
Magnesium (mg/L) |
15.7 |
|
Color (Pt-Co units) |
33 |
Sodium (mg/L) |
16.8 |
|
Chloride (mg/L) |
39.8 |
Potassium (mg/L) |
11.2 |
|
Silicon (mg/L) |
9.5 |
|
|
Long-term Florida LAKEWATCH Data
Numbers reported below are the minimum, average, and maximum value for the 108 months sampled:
|
|
Minimum |
Average |
Maximum |
|
Long-term total phosphorus concentrations (µg/L) |
35 |
79 |
207 |
|
Long-term total nitrogen concentrations (µg/L) |
2090 |
3550 |
4560 |
|
Long-term total chlorophyll concentrations (µg/L) |
45.0 |
162.4 |
310.7 |
|
Long-term Secchi depth (ft) |
0.7 |
1.1 |
2.1 |
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-22-99 |
87 |
3610 |
227.3 |
1.0 |
|
Feb-19-99 |
85 |
3640 |
205.3 |
0.9 |
|
Mar-18-99 |
96 |
4040 |
239.7 |
1.0 |
|
Apr-26-99 |
92 |
4210 |
286.3 |
1.0 |
|
May-18-99 |
91 |
4420 |
310.7 |
0.8 |
|
Jun-14-99 |
65 |
4450 |
194.7 |
1.0 |
|
Jul-23-99 |
56 |
4060 |
181.7 |
0.9 |
|
Aug-23-99 |
62 |
4560 |
224.3 |
1.0 |
|
Sep-27-99 |
70 |
4490 |
215.7 |
1.0 |
|
Oct-11-99 |
68 |
4060 |
238.7 |
. |
|
Nov-19-99 |
82 |
3840 |
218.3 |
0.8 |
|
Dec-17-99 |
89 |
3880 |
216.7 |
1.0 |
|
|
|
|
|
|
|
1999 Average |
79 |
4110 |
229.9 |
0.9 |
Dora West (Lake County)
Florida LAKEWATCH Aquatic Plant Summary
Aquatic plant data collected on July 14, 1992
|
Percent area covered with aquatic vegetation (PAC, %) |
32 |
|
Percent of lake's volume filled with vegetation (PVI, %) |
24 |
|
Average emergent plant biomass (kg wet wt/m2) |
3.3 |
|
Average floating-leaved plant biomass (kg wet wt/m2) |
0.2 |
|
Average submersed plant biomass (kg wet wt/m2) |
1.5 |
|
Average width of emergent and floating-leaved zone (ft.) |
50 |
|
Average lake depth (m) |
3 |
Frequency that plant species occur in 20 evenly spaced transects around the lake.
|
Common Name |
Plant Species |
Frequency (%) |
|
cat-tail |
Typha spp. |
55 |
|
maidencane |
Panicum hemitomon |
55 |
|
knot grass |
Paspalum distichum |
55 |
|
willow |
Salix spp. |
45 |
|
duck-potato |
Sagittaria lancifolia |
40 |
|
elephant-ear |
Colocasia esculenta |
40 |
|
tapegrass |
Vallisneria americana |
35 |
|
bald cypress |
Taxodium distichum |
35 |
|
pickerelweed |
Pontederia cordata |
30 |
|
water primrose |
Ludwigia octovalvis |
30 |
|
water-pennywort |
Hydrocotyle umbellata |
25 |
|
sawgrass |
Cladium jamaicense |
15 |
|
torpedograss |
Panicum repens |
15 |
|
spatterdock |
Nuphar luteum |
5 |
|
smartweed |
Polygonum hydropiperoides |
5 |
|
salt-bush |
Baccharis spp. |
5 |
|
buttonbush |
Cephalanthus occidentalis |
5 |
|
musk-grass |
Chara spp. |
5 |
|
water hemlock |
Cicuta mexicana |
5 |