islandgyal
04-07-05, - 06:58 PM
"6 April 2005
To Whom It May Concern:
As an environmental engineer and someone who has been intimately familiar with Harbour Island for the past 38 years, yet removed enough not to be blinded by day-to-day exposure, I cannot help but recognize and lament that the harbour is showing all the tell-tale signs of environmental degradation.
When I was a little girl in the 1970's there were sea grass and good fish around the government dock. Now there is slime on the bottom, algae floating on top, and the bottom vegetation is largely comprised of previously non-existent, ugly, little broccoli looking plants. The only notable fish are barracuda. There is also a new and rampant variety of anemone on the bottom, and the chance of being stung by jellyfish or anemone is no longer unlikely. Every time I return to Harbour Island the affected area has both grown and worsen. It is sad on a personal level for Harbour Island is my family home. But more importantly, an entire community is in jeopardy for I fear that if left unchecked, the beautiful harbour and island will spiral downward, taking the Island's livelihood, tourism, along with it.
What is causing the water quality in the harbour to deteriorate? The simple
answer is too many nutrients and too little oxygen, a process referred to in
the scientific world as eutrophication. But more importantly, why and how
is this happening? And most importantly, what can be done to rectify the
situation?
The harbour's impaired state is likely the result of five factors: sewage,
garbage, organic waste, stormwater runoff, and disturbance to the harbour
bottom.
Sewage: Most homes, hotels and restaurants in Harbour Island have septic
systems. There is no sewer system, and to my knowledge none of the hotels
has a treatment system. Over time nutrients from septic systems leach into
the groundwater and eventually into the harbour. Some of these systems tie
directly into tidally influenced groundwater making the nutrient's path to
the harbour a quick one. It may also be possible that there are
harbour-side homes and restaurants whose sewage discharges directly into the
harbour.
Garbage: The dump and/or transfer station in Harbour Island has been an
on-going concern for years. The dump's location directly adjacent to the
harbour means that there is no buffer between the garbage and the water.
Because garbage is hauled to North Eleuthera its seaside location may
arguably be necessary. However, improvements can and should be made to
clean up the area and better contain the garbage and the leachate leaving
the site. Garbage is often dropped into the harbour when it is being loaded
onto the barges. Every time it rains the stormwater that has come in
contact with the garbage and all its associated bacteria, heavy metals,
pollutants, etc. runs off directly into the harbour.
Organic waste: It is important to recognize that biodegradable refuse can
significantly contribute to the degradation of a waterway. When fish guts,
conch slop or potato peels are thrown into the sea, large amounts of oxygen
are required to breakdown this waste. As a result the water is depleted of
the oxygen necessary for healthy marine life.
Stormwater runoff: Every time it rains, the rainwater washes the surface of
everything it comes in contact with * roads, docks, rooftops, dumps * and
then that rainwater runs downhill to the nearest body of water carrying with
it all the dirt and grim it picked up along the way. The gas that was
spilled on the dock will be transported right into the harbour. The silt,
sand, litter and oil droppings on the road surfaces will run right down
Mission Hill or Big Hill or some other hill into the harbour. Stormwater is
probably the largest source of pollution to waterways, and it is also
probably the most difficult to treat. However, it can be managed through
minimization: minimize the amount of development and the number of people on
the Island and the number of vehicles and the amount pollutants on the roads
and docks will automatically be minimized.
Disturbance to the harbour bottom: Harbour Island sits on a natural,
protected, deepwater harbour. Historically dredging has not been a concern
or even an on-going activity. Things have changed. It now seems that every
time I visit, there are dredging operations underway * a new deepwater dock,
a manmade beach. This must stop. I would like to hope that the
individuals employing the dredging are simply not versed on these matters
and do not realize the ramifications it has on the harbour. What happens to
the bottom of the harbour during dredging? The physical and biological
composition of the area changes. The sand and bio-matter on the bottom are
turned up. The plant and animal life is displaced. The bottom vegetation
may never be re-established or it may be of a different type. Natural
filtering of the water may be impacted. The turbidity of the water may
change. Shallow spawning areas are likely to be impacted. Sand, silts and
bio-matter deposited at the placement location can choke out the established
vegetation. The bottom line is dredging changes the natural delicate
balance of the harbour.
Most of these activities and concerns mentioned above have been on-going for
many years, seemingly without problems. However, as Harbour Island has
grown, the Island's pristine environment can no longer be maintained by the
status quo. Moreover the Island cannot sustain the pressures of big
development such as that underway at Valentine's or proposed at Romora Bay.
The biological and chemical balance within the harbour has clearly changed
and, I am certain, will continue to change unless steps are taken by the
community to improve the situation. One of the easiest and most effective
ways of doing this is to curtail new development and most especially new
development along the shoreline.
Amanda P. Malcolm, P.E.
Water Resources Engineer
Maryland Department of the Environment
For more information or to schedule an interview, please e-mail info@briland.com.
The Briland Modem
<www.briland.com>
News and Information for Harbour Island & North Eleuthera, Bahamas
[It's much better in the Out Islands.] - Coordinates: 25°30'N 76°38'W
To Whom It May Concern:
As an environmental engineer and someone who has been intimately familiar with Harbour Island for the past 38 years, yet removed enough not to be blinded by day-to-day exposure, I cannot help but recognize and lament that the harbour is showing all the tell-tale signs of environmental degradation.
When I was a little girl in the 1970's there were sea grass and good fish around the government dock. Now there is slime on the bottom, algae floating on top, and the bottom vegetation is largely comprised of previously non-existent, ugly, little broccoli looking plants. The only notable fish are barracuda. There is also a new and rampant variety of anemone on the bottom, and the chance of being stung by jellyfish or anemone is no longer unlikely. Every time I return to Harbour Island the affected area has both grown and worsen. It is sad on a personal level for Harbour Island is my family home. But more importantly, an entire community is in jeopardy for I fear that if left unchecked, the beautiful harbour and island will spiral downward, taking the Island's livelihood, tourism, along with it.
What is causing the water quality in the harbour to deteriorate? The simple
answer is too many nutrients and too little oxygen, a process referred to in
the scientific world as eutrophication. But more importantly, why and how
is this happening? And most importantly, what can be done to rectify the
situation?
The harbour's impaired state is likely the result of five factors: sewage,
garbage, organic waste, stormwater runoff, and disturbance to the harbour
bottom.
Sewage: Most homes, hotels and restaurants in Harbour Island have septic
systems. There is no sewer system, and to my knowledge none of the hotels
has a treatment system. Over time nutrients from septic systems leach into
the groundwater and eventually into the harbour. Some of these systems tie
directly into tidally influenced groundwater making the nutrient's path to
the harbour a quick one. It may also be possible that there are
harbour-side homes and restaurants whose sewage discharges directly into the
harbour.
Garbage: The dump and/or transfer station in Harbour Island has been an
on-going concern for years. The dump's location directly adjacent to the
harbour means that there is no buffer between the garbage and the water.
Because garbage is hauled to North Eleuthera its seaside location may
arguably be necessary. However, improvements can and should be made to
clean up the area and better contain the garbage and the leachate leaving
the site. Garbage is often dropped into the harbour when it is being loaded
onto the barges. Every time it rains the stormwater that has come in
contact with the garbage and all its associated bacteria, heavy metals,
pollutants, etc. runs off directly into the harbour.
Organic waste: It is important to recognize that biodegradable refuse can
significantly contribute to the degradation of a waterway. When fish guts,
conch slop or potato peels are thrown into the sea, large amounts of oxygen
are required to breakdown this waste. As a result the water is depleted of
the oxygen necessary for healthy marine life.
Stormwater runoff: Every time it rains, the rainwater washes the surface of
everything it comes in contact with * roads, docks, rooftops, dumps * and
then that rainwater runs downhill to the nearest body of water carrying with
it all the dirt and grim it picked up along the way. The gas that was
spilled on the dock will be transported right into the harbour. The silt,
sand, litter and oil droppings on the road surfaces will run right down
Mission Hill or Big Hill or some other hill into the harbour. Stormwater is
probably the largest source of pollution to waterways, and it is also
probably the most difficult to treat. However, it can be managed through
minimization: minimize the amount of development and the number of people on
the Island and the number of vehicles and the amount pollutants on the roads
and docks will automatically be minimized.
Disturbance to the harbour bottom: Harbour Island sits on a natural,
protected, deepwater harbour. Historically dredging has not been a concern
or even an on-going activity. Things have changed. It now seems that every
time I visit, there are dredging operations underway * a new deepwater dock,
a manmade beach. This must stop. I would like to hope that the
individuals employing the dredging are simply not versed on these matters
and do not realize the ramifications it has on the harbour. What happens to
the bottom of the harbour during dredging? The physical and biological
composition of the area changes. The sand and bio-matter on the bottom are
turned up. The plant and animal life is displaced. The bottom vegetation
may never be re-established or it may be of a different type. Natural
filtering of the water may be impacted. The turbidity of the water may
change. Shallow spawning areas are likely to be impacted. Sand, silts and
bio-matter deposited at the placement location can choke out the established
vegetation. The bottom line is dredging changes the natural delicate
balance of the harbour.
Most of these activities and concerns mentioned above have been on-going for
many years, seemingly without problems. However, as Harbour Island has
grown, the Island's pristine environment can no longer be maintained by the
status quo. Moreover the Island cannot sustain the pressures of big
development such as that underway at Valentine's or proposed at Romora Bay.
The biological and chemical balance within the harbour has clearly changed
and, I am certain, will continue to change unless steps are taken by the
community to improve the situation. One of the easiest and most effective
ways of doing this is to curtail new development and most especially new
development along the shoreline.
Amanda P. Malcolm, P.E.
Water Resources Engineer
Maryland Department of the Environment
For more information or to schedule an interview, please e-mail info@briland.com.
The Briland Modem
<www.briland.com>
News and Information for Harbour Island & North Eleuthera, Bahamas
[It's much better in the Out Islands.] - Coordinates: 25°30'N 76°38'W