May 15, 2002
Piney Z Project
Natural and cultural history of Piney Z/Lake
- Physical Characteristics
Piney Z Lake is 193 acres and is surrounded by 407 acres
of property. It is located east of Tallahassee, one mile
off Apalachee Parkway. It is close to becoming an urban
fishery and includes black bass, Bluegill, and Redear Sunfish
types. Piney Z’s Karst topography is similar to Walkulla
county’s. Each have sinkholes; however, Wakulla County
is more “Swiss cheese” than Leon County. Eventually
the lake will be gone. The rate of this occurring is less
if the development is less. This is called natural eutrophication.
The plants will die as well as the fish. The state of Florida
relies on the Floridan aquifer for 90% of its public drinking
water. The ground water is protected by preventing pollution
and over pumping it.
- Man’s impact: past, present, and future
When the lake restoration began in October 1996, 25% of
the lake bottom was scrapped and the muck was then turned
into dikes or “fingers”. The Florida Fish and
Wildlife Conservation Commission is trying to keep the lake
alive. They carefully watch the development of Lake Piney
Z Plantation. Runoff control would keep pesticides and fertilizers
out of the lake. The best way to keep that from happening
is by establishing twenty or thirty foot buffer zones that
could be used to filter the storm water runoff. Piney Z
will open to the public this summer. This adds in the factor
of litter from picnics and cigarettes from smoke outs.
- Temperature- a measure of warmth or coldness
of a lake, river, or solution. It is the degree of heat
in a body or “thing”. Temperature is important
so we can see what climate the plant and animal life grow
- Dissolved Oxygen- a measure of oxygen
concentration in a lake, river, or solution. Four –
six mg/l or ppm is an acceptable range. Mg/l= milligrams
per liter and ppm= parts per million. Dissolved oxygen levels
concern the amount of oxygen that plant life gives off and
animal life take in.
- pH- stands for potential hydrogen. It
is a measure of a solution’s hydrogen in concentration.
It can tell how acidic or basic a lake, river, or solution
is. pH ranges from 1-14. pH = 7 is neutral, ph > 7 is
basic, and pH < 7 is acidic.
- Turbidity- the cloudiness of water. It
is a measure of the insoluble solids (soil, organics, microorganisms,
etc.) that impede light passage. It is measured in Nephelometer
Turbidity Units. 0 NTV = totally clean water. 0.5 NTV =
noticeable cloudiness to the average person. Plants need
light rays to grow.
- Phosphates- fertilizer. Attributes to
- Nitrates- fertilizer. Can overgrow plant
life in lakes from runoff water.
- Temperature- To measure the air temperature,
we used a probe connected to a graphing calculator. On the
graphing calculator there was a program that took the air
temperature when we started the program. After ten seconds,
the scribe recorded the temperature reading. We used this
same process for the water temperature.
- Dissolved Oxygen- First we took a sample
from an area on the lake. Then we put some of the water
in a jar and poured a fixed rate of drops of substances
into the sample (there were two kits with directions on
what to do). We eventually had to put a substance in a shot
giver. The amount of that substance that was put into the
water sample to make it clear was the DO reading.
- pH- again we used the graphing calculator
and the probe, but for pH we used a program that measured
WaterWorks Newsletter Jan/Feb 1997
US Environmental Protection Agency Polluted pamphlet
About Groundwater Protection handout
Water Conservation—Ways to be water wise handout